CN1998265A - Digital cell phone with hearing aid functionality - Google Patents
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- CN1998265A CN1998265A CN 200480036433 CN200480036433A CN1998265A CN 1998265 A CN1998265 A CN 1998265A CN 200480036433 CN200480036433 CN 200480036433 CN 200480036433 A CN200480036433 A CN 200480036433A CN 1998265 A CN1998265 A CN 1998265A
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Abstract
A digital cell phone with built in hearing aid functionality, includes: a housing; a digital signal processor (DSP) contained within the housing for encoding and decoding digital data; a hearing loss compensation module, coupled to the DSP, for processing digital data in accordance with a hearing loss compensation algorithm; a digital-to-analog converter (DAC), coupled to the hearing loss compensation module, for receiving the processed digital data from the hearing loss compensation circuit and converting the data into an analog signal; and a speaker, coupled to the DAC, for receiving the analog signal and converting the analog signal into sound waves adapted for a hearing impaired listener.
Description
Relevant application
According to 35U.S.C § 119 (e), it is No.60/532 that current application requires to give sequence number, the senior interest of 736 U.S. Provisional Patent Application, this temporary patent application title is " being used to be supported in the method and system that uses hearing aids on the digital telephone; " it was submitted on December 23rd, 2003, its all at this with reference to introducing.
The background of invention
In the period of nearest 10, because the development and the application of digital deaf-aid, the hearing aids technology has obtained the development of advancing by leaps and bounds.Can coming subtly by software, the control figure hearing aids be an outstanding advantage of digital deaf-aid.Can in digital deaf-aid, realize a lot of digital processings (DSP) program, strengthen such as multichannel compression, adaptive noise reduction and voice.These DSP programs can be brought potential benefit to hearing aid user, and these benefits are difficult on the analog machine and obtain.And current existing digital deaf-aid has the restriction of important physical condition.Because the restriction of size and to the consideration of cost, digital deaf-aid does not have the sufficient computational resource that is used for the advanced digital processing capacity, such as the speed of processor, and memory headroom and power supply capacity.Such as, the hearing aids that can store and carry out multiprogram can allow the user switch between several programs, to satisfy their demand in different tin force environments.But because the restriction of the physical condition of digital deaf-aid, the function of this multiprogram is to be difficult to realize at present.
The development of the development of wireless telecommunications and hearing aids technology is corresponding.Digital mobile phone no longer is expensive instrument, and it can allow people home or the world is any has the place of wireless service to carry out radio communication.But the acoustic characteristic of mobile phone is the normal people's design of hearing.Therefore, in order to be fit to use mobile phone, acouesthesia degree impaired person also must put on hearing aids.Requiring the user to use two (numeral) equipment to carry out common wireless calling is poor efficiency and trouble.In addition, some digital cordless phones have electromagnetic radiation, and it can disturb hearing aids, make the sound of amplification become stable state noise or ear-piercing long.
The brief overview of invention
This invention is handled other problem of problem above-mentioned and some by a kind of method and system that is used on digital mobile phone realizing function of hearing aid is provided, thereby can allow hearing have the people of obstacle need not need an independent hearing aids when using phone.
In one embodiment, the disposal ability of digital mobile phone is applied to carrying out senior signal processing algorithm or function, and this is to be difficult to realize on the digital deaf-aid of resource-constrained.
In another embodiment, the user interface of digital mobile phone and wireless downloading function provide flexibility for the control and the realization of function of hearing aid.
In one embodiment, the invention provides a digital mobile with function of hearing aid, described mobile phone comprises: a microprocessor, and the internal memory that is connected with microprocessor is used to store program that at least one is carried out by microprocessor; One is connected to the keyboard of microprocessor, is used to import the alphabetical alphanumeric information by microprocessor processes; One display screen that is connected with microprocessor is used to show the alphanumeric information that is received from microprocessor; One radio frequency that is connected with microprocessor (RF) antenna is used for sending and receiving the RF signal; One microphone is used to receive sound wave and sound wave is converted to analog signal; One analog to digital converter that is connected with microprocessor (ADC), the analog signal conversion that is used for receiving from microphone is a digital data format; One digital signal processor (DSP), it comprises and is used for digital data coding for will and being used for decoder to the numerical data decoding that receives from the RF antenna by the encoder of the RF signal format of RF antenna transmission; The one hearing loss compensating module that is connected with DSP is used for carrying out numerical data according to the hearing loss backoff algorithm and handles; One digital to analog converter (DAC), it is connected with the hearing loss compensating module, and the digital data conversion that is used for the processing that will receive from the hearing loss compensating module is an analog signal; With a loud speaker that is connected with DAC, be used for receiving analog signal, and analog signal is output as the audible sound that suitable hearing has the user of obstacle to listen to from DAC.
In another embodiment, one sense of hearing compensating for loss and damage communication system comprises: one is used to send and receive the digital mobile phone of voice data, and wherein said digital mobile phone comprises and is used for sound wave is converted to the digital data format of transmission and the circuit that the voice data that receives is converted to audible sound; With a hearing loss compensating module that is connected with described circuit, be used for the voice data of receiving further being handled according to the hearing loss backoff algorithm, wherein when being converted to analog format, the voice data of processing can provide the sound wave of enhancing, to be fit to the sense of hearing the listening to of listener of obstacle is arranged.
In another embodiment, a digital mobile phone that has built-in function of hearing aid comprises: a shell; One comprises the digital signal processor (DSP) in the shell, and it is used for carrying out to digital data Code And Decode; One sense of hearing compensating for loss and damage module, it is connected with DSP, is used for handling numerical data according to the hearing loss backoff algorithm; One digital to analog converter (DAC), it is connected with the hearing loss compensating module, is used for receiving the numerical data of handling from the hearing loss compensating circuit, and data are converted to analog signal; And a loud speaker that is connected with DAC, it is used to receive analog signal, and analog signal conversion is had the listener's of obstacle sound wave for being fit to the sense of hearing.
The method of compensation hearing loss when in another embodiment, being used to use digital telephone: by the digital telephone receiving digital signals; Decoded digital signal with according to the form that pre-establishes, provides second digital signal; According to the hearing loss backoff algorithm second digital signal is handled, thereby the hearing loss compensated digital signal is provided; The hearing loss compensating signal is converted to analog signal; And analog signal conversion there is the listener's of obstacle audible sound for being fit to the sense of hearing.
Accompanying drawing is briefly described
Fig. 1 shows the block diagram of a traditional hearing aid.
Fig. 2 shows the block diagram of a hearing loss compensating circuit that is provided with in traditional hearing aid.
Fig. 3 A shows the block diagram of a conventional digital mobile phone.
Fig. 3 B shows the block diagram of a typical DSP device that is provided with in the conventional digital mobile phone.
Fig. 4 shows the block diagram of the according to an embodiment of the invention one DSP device that strengthens, and described DSP device has a sense of hearing compensating for loss and damage module.
Fig. 5 shows according to an embodiment of the invention, is used for the block diagram of a typical hearing loss compensating module of the enhancing DSP device of Fig. 4.
Fig. 6 shows the block diagram of a bank of filters and the response of bank of filters correspondent frequency.
Fig. 7 shows according to an embodiment of the invention one typical piecewise linearity gain function, and described function can be used by one or more filter of the bank of filters among Fig. 6/passage.
Detailed description of preferred embodiment
The block diagram of the general structure of traditional digital deaf-aid is shown in sketch 1.Digital deaf-aid generally includes a microprocessor or application-specific integrated circuit (ASIC) (ASIC) nuclear 10, one limited memory space 12, it is connected with microprocessor 10 communications, one mini microphone 14 and Microspeaker or earphone 16, one analog to digital converter (ADC) 18 and a digital to analog converter (DAC) 20, with anti-alias filter/circuit 22 that they are associated with him, it is used for reducing distortion and the signal degradation that is produced by ADC and DAC circuit.Collect voice and other voice signals by mini microphone 14.Signal is by first anti-distortion circuit 22, and band-limited signal also reduces distortion.Afterwards, by ADC18, be number format with conversion of signals.The digital signal that produces is handled by microprocessor 10, and the processing of being done is based on one or more program storage in internal memory 12 and that carried out by microprocessor 10.Afterwards, the enhanced digital signal is changed back analog signal by DAC20, by 22 filtering of second anti-alias filter and by earphone speaker 16 outputs.In traditional hearing aid apparatus, all these assemblies and a button cell are installed in a little container or the packing, thus can be in ear or the outside wear hearing aids.This hearing aids and above-described assembly and circuit are the technology that is widely known by the people.
Fig. 2 shows a typical signal processing circuit 30 (the perhaps program that realizes with software), and it is included in (or being performed) microprocessor or the ASIC nuclear 10.The digital signal of simulated sound (such as, voice) is represented to receive and handled by digital filter bank 32 from ADC18.In addition, digital filter bank comprises and is used to carry out the circuit of the signal branch of receiving being gone into the function of different frequency bands.Afterwards, with different frequency bands offer a plurality of amplifiers (such as: gain-controlled amplifier exclusive disjunction amplifier) 34, be used for suitably amplifying the frequency and the frequency range of the selection that receives from digital filter bank 32.Afterwards, different frequency bands and passage can combine by signal adder circuit 36, and can offer separately volume control circuit 38 and low frequency compressor circuit 40 and high frequency compressor circuit 42 afterwards.Afterwards, the signal after compressor circuit 40 and 42 output meeting will be handled by adder circuit 44 summations and by DAC20 and earphone 16 sends the listener to.
In some hearing aidss, simple switch and remote controller can be arranged, allowing the user from group's option or program, to select the setting of equipment, thus can according to the specific hearing loss feature of user and/or hearing aids the environment of frequent use make best compensation.These options and program can be assisted initial adjustment and setting on the platform at computer by the audiologist of authentication.If ears all have hearing loss just to need two hearing aidss.
In Fig. 3 A and Fig. 3 B, shown the block diagram of some the universal audio signal processing components in the cardinal principle hardware configuration of digital mobile phone 50 and the digital signal processor (DSP) 52 that in digital mobile phone 50, comprises respectively.As shown in the figure, digital mobile phone 50 has all necessary assemblies to support function of hearing aid.In fact, aspect processor speed, memory headroom, user interface and power supply capacity, digital mobile phone be a kind of than hearing aids senior the digital device of Duoing.
As shown in Figure 3A, digital mobile phone 50 has following primary clustering and function usually: a microprocessor 54, its be used to control mobile phone 50 general utility functions (such as: answer incoming call and breathe out, store and watch contact details according to input from the user, etc.); DSP52, it is designed for the executed in real time of DSP program, such as signal encoding and decoding; One relatively large random-access memory (ram) and/or flash (Flash) internal memory 56, it not only supports necessary phone operation, but also supports the download and the execution of option program, for example as the tinkle of bells editing machine, voice memo instrument etc.; One microphone 58, be used to receive audio sound (such as; Voice); One Microspeaker 60 and/or one is used for providing the stereophone interface of signal to earphone 62, and ADC64 that is associated with them and DAC66 transducer, is used for changing between analog voice or other acoustic signals and digital signal; Anti-alias filter circuit 68 separately; One keyboard and a display screen 70 make user's function of control appliance easily; With a radio frequency (RF) antenna 72, be used for receiving and sending the RF signal.
Digital mobile phone also comprises a lasting power supply (not shown), and it can be in or charge on vehicle easily.Now, also have wave point, circuit and related software on a lot of digital mobile phones, its make digital mobile phone can pass through wireless communication networks (such as, the wireless communication networks of Verizon), the wide area network as Internet, or the local electronic equipment by as bluetooth (Bluetooth) earphone receives or the transmission numerical data.As well-known technology, bluetooth is a kind of short distance RF communications protocol.
Shown in Fig. 3 B, generally, DSP52 is responsible for the processing of audio signal.Voice signal has two predominating paths in DSP; Transmit path 80 and RX path 82.In transmit path 80, receive voice from the user by mini microphone 58.Afterwards, respectively the voice of receiving are carried out pre-filtering and are converted into digital signal by filter 68 and ADC64.Afterwards, signal by 84 pairs of generations of signal pre-processing circuit be further processed (such as, preconditioning is to remove noise, balance frequency etc., be used for more effective coding), and sending to microprocessor 54 with by before the RF antenna transmission at bit stream (bit stream), is bit stream by encoder 86 with the signal encoding that produces.
In RX path 82, such as, the bit stream that sends from a base station (not shown) is received by antenna 72, by microprocessor 54 handle (such as, remove heading message and/or additional information, etc.), and send to DSP52 afterwards.The decoder 88 that is included among the DSP 52 at first is decoded as data bit stream digital pulse coding modulation (PCM) signal.Afterwards, by channel signal treatment circuit 90, the PCM signal is carried out further digital processing, before arriving the listener, to pass through DAC66, anti-alias filter 68 and loud speaker 60 and/or earphone 62, carry out as typical function of cellular phone such as echo elimination, frame synchronization, passage/frequency equilibrium.
In first embodiment of current invention, as shown in Figure 4, except the common signal processing of carrying out by the voice signal treatment circuit 90 of digital mobile phone 50, realized that also (for example, by hardware and/or software) is designed to compensate Digital Signal Processing (DSP) algorithm or the function 92 of specific people's hearing loss.The example of hearing loss compensating circuit or algorithm is the multichannel compressor circuit, as shown in Figure 2.As everyone knows, digital circuit also can realize by software or firmware.Therefore, the circuit in Fig. 2 can be regarded as the algorithm of realizing with software or firmware.Such as, if realize that with software or firmware the hearing loss compensation program can be stored in the internal memory 56, such as, the place that microprocessor 54 or DSP52 can visit and carry out.In the use here, term " module " is meant circuit, software and the hardware that is associated, firmware and the hardware that is associated, or the combination of any of these realization.In addition, term " program " has comprised software and firmware according to the implication common and commonly used of these terms for those of ordinary skills.Also need in addition to understand, if the hearing loss compensating module is to be implemented with the program of being carried out by microprocessor 54, such as, suitable data path should be provided, what make that voice data can be correct is delivered to microprocessor 54, carrying out the hearing loss compensation deals, and, after this receive by DAC66.Those of ordinary skills can easily design by this data path of the microprocessor in the mobile phone 50 54, DSP52 and other assemblies (such as DAC66) and/or the suitable control of closing, with as required strategic point in mobile phone 50 electronic installations, transmit signal, and need not unsuitable test.Can realize that the various circuit structures that comprise in the current invention and design are to carry out function described herein.
In one embodiment, the hearing loss compensating circuit that shows in Fig. 2 combines with the channel signal treatment circuit 90 of traditional digital signal processing circuit 52 and/or digital mobile phone.Alternatively, hearing loss compensating circuit among Fig. 2 may be used as an independent integrated circuit chip and be implemented, this chip is connected with the output of channel signal treatment circuit 90, to carry out the hearing loss compensate function for the signal of receiving from channel signal treatment circuit 90.Therefore, as shown in Figure 2, in one embodiment, the digital signal of receiving from the channel signal treatment circuit is imported into a digital filter bank, then, is handled by remaining components/circuits 34-44.After this, through the digital signal of handling and hearing loss compensates, in first output mode of operation, be sent in DAC66 and the loud speaker in digital mobile phone 50 60, perhaps in second output mode of operation, connect (such as, bluetooth by wired or digital radio, ultra broadband, or infrared ray) send.Need be appreciated that, the suitable switching circuit that can between first and second output modes and other patterns that need, change and User Agreement (such as, button and display screen menu option) can easily be realized by those of ordinary skills, and need not unsuitable test.In addition, no matter be to be directly connected on the input (not shown) of mobile phone 50, still by wireless connections, the circuit in digital mobile phone 5 can both be monitored out the existence of earphone 62 automatically, and, the signal of handling can be transferred on earphone rather than the loud speaker afterwards.Such circuit is known in the prior art, and is easy to be realized by those of ordinary skills.
Therefore, with current invention, if when a hearing has the user of obstacle when answering or get radio telephone, do not wear earphone, digital mobile phone 50 can be converted to the operation of first output mode, and wherein digital mobile phone 50 built-in loud speakers 60 directly offer the sound of user through the hearing loss compensation.Alternatively, if the user has worn earphone 62, digital mobile phone 50 can be converted to second output mode operation, wherein by wired or wireless connection (such as, bluetooth and infrared ray), send through processing and and the sense of hearing weaken the sound that compensates to earphone 62.Among the embodiment, earphone 62 does not need to arrange all treatment circuits in the conventional digital hearing aids in the back, because this processing procedure is in digital mobile phone 50 inter-process.When using cable to be connected on the mobile phone 50, it can be existing earphone.When using digital radio to connect, digital mobile phone can comprise a short distance RF transmitter (not shown), and transmitter is connected to DSP52, on the output of DAC66 or anti-alias filter 68, is used to send numeral or analog signal to earphone 62.For example, if signal sends with number format, the earphone 62 of current invention can comprise a receiver, is used to receive short range radio signals (such as, bluetooth, ultra broadband, infrared ray etc.), a DAC transducer and an anti-alias filter, it is used for digital signal is converted to analog signal, with a loud speaker, it is used for producing the sound wave that can listen according to the signal that receives.In the embodiment of back, earphone may be the part of headphone, and headphone comprises earphone and is used for receiving from the user microphone of wearing of speech sound there.Headphone may use existing technology and wired and be wirelessly connected to mobile phone 50.If headphone uses wireless connections, to wear microphone and also comprise a short-range transmitter, it is used to send (not shown) on the short-distance radio receiver of short range radio signals in the mobile phone 50.
In another embodiment, multiple DSP program 94 is designed to be fit to hearing has the people of obstacle to use in different listening in the environment, described program is kept in the internal memory 56 of digital mobile phone 50, and the user can control its use by the touch-screen and/or the keyboard 70 that provide on digital mobile phone 50.In another embodiment, can select one or more multiprogram 94 according to user's environment automatic or manual.When needs were selected automatically, the user can be by selecting " automatically " pattern simply, and wherein the microphone of digital mobile phone will " perception " audio environment.Microphone is the reception environment sound wave from environment, converts sound wave to analog signal, and sends analog signal afterwards to ADC64.Afterwards, the digital signal that is produced by ADC64 can be sent to suitable circuit in the digital mobile phone (such as microprocessor 54 or DSP52), to handle and to analyze.Such as, if microprocessor 54 is handled and analyzed digital signal, microprocessor 54 can instruct DSP52 not carrying out directly sending signal to microprocessor 54 under the situation of preliminary treatment and coding.In one embodiment, according to the frequency distribution of the signal that receives, microprocessor 54 can automatically perform a program of selecting automatically for optimal compensation of hearing program of " perception " environment and algorithm 94.Like this automatic selection and routine analyzer/algorithm are well known in the art, and, need not inappropriate test, be easy to pass through existing techniques in realizing according to the multiple program/algorithm of current invention.
Shown in the path A of Fig. 4, in the RX path 82 of mobile phone, increase hearing loss backoff algorithm 94 and can allow hearing have the people of obstacle need not wear hearing aids just can to carry out wireless calling.Distortion of introducing by the hearing aids transducer and the room noise of gathering by an independent hearing aid microphone have so just been avoided.In addition, solved the problem of the electromagnetic interference that in hearing aids, is produced when the hearing aids at mobile phone.
In second embodiment of present invention, added a loop-back signal path 96 (path B) to hearing loss compensating circuit 92 from the microphone 58 of digital mobile phone 50.The loop-back path 96 of this interpolation can with from the user directly the people's of speech ambient sound gathered by the microphone 58 of digital mobile phone 50, be converted into numerical data by ADC64, carrying out hearing loss by the hearing loss compensating circuit in phone 92 handles, after it, as indicated above, send to loud speaker 60 or user's earphone 62 by wired or wireless connection.Use this loop-back path 96, mobile phone 50 is not when carrying out call, can be used as an independent hearing aids and use according to user's selection, and, mobile phone 50 is understood the pilot signal of the monitoring base station that continues and when the phone incoming call is arranged, can be notified the user.The function that this is additional can allow mobile phone 50 become a wireless telecommunications system and an independent hearing aids simultaneously.Switch 98 allows manually and selects automatically the operator scheme of mobile phone 50, with as individual wireless communication apparatus or independent hearing aids.Like this, hearing user that obstacle arranged has just no longer needed the hearing aids that adds when online (making a phone call) or off-line (not making a phone call).
In the 3rd embodiment of present invention, the data concatenation ability of digital mobile phone can be used for being loaded in other signal handlers 94 that phone does not have down, to satisfy hearing the different requirement of people in different environment of obstacle is arranged.Such as; Noise has various ways: road noise, and the dining room noise, the noise etc. of getting lines crossed, and also every kind of noise all has its oneself acoustic characteristic.Generally, be difficult to the precognition hearing person's that has the obstacle noisy environment and to the demand of signal processing.
In one embodiment, as described in the embodiment in front, select according to the user no matter be, still under the hearing aids pattern, the analysis result of the signal that receives by mobile phone, can use wireless data service to download the appropriate signal Processing Algorithm, be used for carrying out the hearing loss compensation.Therefore, based on the hearing aids handling procedure of user's environment manually or auto options, provide a kind of from the unlimited resource of reality (such as, online database) select the appropriate method of signal processing algorithm because digital mobile phone has the network concatenation ability.On the contrary, current other hearing aidss only have some seldom operable signal processing algorithm and the functional adaptation environment is not easy to.In one embodiment, if needed hearing loss compensation program is not in the internal memory of digital mobile phone, hearing loss compensating circuit or program 92 can send request to microprocessor 54, the request microprocessor by wireless Internet access protocal from oracle (such as, a database) download the program that needs, this is the technology that has been widely known by the people in the prior art.
In Fig. 5, show second typical hearing loss compensating circuit or module 100 according to an embodiment of invention.A function of hearing aids is on the hearing loss serious frequency voice signal of importing to be amplified.According to the dynamic range that reduces of the ear of hearing impairment,, use nonlinear amplifier with the dynamic range that reduces of wide voice signal range mappings (compression) to the ear of hearing impairment for all sound of hearing that can be comfortable.According to an embodiment of invention, hearing loss compensating circuit 100 provides the level related gain in the hearing loss serious frequency.Low-level sound amplifies with relatively little dynamic range compression, and simultaneously, high level sound amplifies with high relatively dynamic range compression.Therefore, compensating circuit 100 provides a kind of frequency enlarging function or algorithm relevant with level that is used for deal with data.
As shown in Figure 5, compensating circuit 100 comprises an interpolation type finite impulse response (FIR) (IFIR) bank of filters 102.Bank of filters 102 provides a kind of frequency separation for the digital signal of input, the feasible amplification (similar in appearance to equalizer) that can use varying level on different frequency ranges.In one embodiment, the stopband attenuation of each the filter process sufficient amount in the bank of filters 102.In addition, each filter have a little time-delay (such as,＜8 milliseconds), make it can not interfere with the carrying out and the perception of normal voice.As well-known technology, reaching sufficient stopband attenuation and short time-delay is the target of vying each other, and this need make compromise in design.
One efficiently solution be to use one graduate, interpolation type finite impulse response (FIR) (IFIR) bank of filters 102.In Fig. 6, show an embodiment of filter construction and frequency response.In this embodiment, bank of filters has 9 passages, covers the frequency range of 0-8kHz.The channel attenuation of each filter is approximately 35-40dB.The bandwidth of three low frequency passages is approximately 250Hz, and the bandwidth of high-frequency passage is approximately 1000Hz.In one embodiment, the frequency resolution higher according to the human auditory system uses narrower bandwidth on some low frequencies.On calculating, in one embodiment, bank of filters 102 nearly 68 nonzero coefficients also have about 200 zero valued coefficients.This means, when using the whole filter group, in each input signal sampling, carried out 68 multiplication altogether.In this embodiment, the time-delay of system can the same weak point with 77 sub-samplings (being 4.8 milliseconds when taking a sample with 16kHz).In one embodiment, eight voice outputs that are used to produce amplification in nine passages, and the passage of remaining highest frequency is used for anti-distortion.
The output of bank of filters 102 input of accomplishing a nonlinear gain table or compression module 104.Compression module 104 is the relevant gain table of level that are used for non-linear amplification, and it has the individual clauses and subclauses of 8 * 128 (passage x incoming levels), and input intensity is limited in the 0-128dB scope.After the analog signal representative of sound wave was converted to numerical data by ADC18, data can be stored in the metadata cache 106.The level detector 108 that is connected to metadata cache 106 calculates an incoming level, as in the window between hour (such as, be 128 points or 8 milliseconds when taking a sample with 16kHz) be the mean intensity of unit with dB.The gain level of each passage also can be described as the clauses and subclauses of gain table, can also be calculated as the piece-wise linear gain function of the incoming level that calculates by level detector 108.In Fig. 7, shown a typical piece-wise linear gain function.But, can on each frequency channel, use different gain functions, to be used for finishing different types of hearing loss compensation.
By summing circuit 110, the output of nonlinear gain table or compression module 104 is added to together, leave in second metadata cache 112 temporarily, and afterwards as final amplification voice signal output.In one embodiment, provide a volume control circuit 114, allow user interactions ground to regulate and offer total signal level of DAC20, and finally offer the user that the sense of hearing has obstacle.
In one embodiment, the user is by the unlatching of the function of keypad/display 70 (Fig. 3 A) control compression module 104.In case open non-linear enlarging function, the digital pcm that receives the decode (voice) signal will carry out filtering and amplification according to selected non-linear interpolator arithmetic.The PCM signal that is exaggerated will send to the user by digital to analog converter (DAC) 20 and loud speaker 60 and/or earphone 62.
In another embodiment,, on display screen 70, provide a menu item or icon, the cellphone subscriber can be selected in order under standby mode, to use non-linear amplification.In case make a choice, mobile phone 50 will move as an off-line hearing aids, at this moment, and 54 pilot signals that can monitor from the base station of microprocessor, and, when the phone incoming call, notify the user.The every other function of mobile phone 50 all can not be used.Under standby mode, directly delivered to the hearing loss compensating module from the audio signal of the microphone 58 of mobile phone 50, rather than the encoder 86 of DSP52.Hearing loss compensating module 92 uses user-selected non-linear interpolator arithmetic that the signal of guiding is again handled.Signal after the processing by DAC20 and loud speaker 60 or earphone 62, is returned to the user.Among another embodiment, the user who loses for binaural listening provides stereophone.
Generally speaking, this inventive embodiment provides the method that can use function of hearing aid on digital mobile phone.Use has the mobile phone of function of hearing aid, has the people of hearing loss just can enjoy wireless communication by single equipment or system.In addition, mobile phone also can be used as an independent hearing aids and uses, and makes the hearing of mobile phone have the user of obstacle just not need to have carried independent professional hearing aids.Computational resource that mobile phone has and wireless connections allow to be used to realize the senior signal processing method in the hearing loss compensation, and this is to be difficult to realize on existing hearing aids.Also there is not a kind of equipment can support hearing aids and function of cellular phone simultaneously.Therefore, the mobile telephone system with function of hearing aid of the present invention provides a kind of ten minutes useful device for millions of lossy people of the sense of hearing.
As indicated above, the invention provides a kind of method and system that is used for providing the novelty of function of hearing aid by digital mobile phone.Those of ordinary skill in the art can understand above that the description of preferred embodiment is exemplary, and the present invention can realize with the modifications and variations of top disclosed technology.Those of ordinary skills can understand, and only maybe can know much being equal to of the specific embodiment of the present invention described herein that uses conventional test.Such modification, change and be equal to be considered to as below claim as illustrated in the spirit and scope of the present invention in.
Claims (41)
1. digital mobile phone that has function of hearing aid, it comprises:
One microprocessor;
One internal memory, it is connected with microprocessor, is used to store the program that at least one can use described microprocessor to carry out;
One keyboard, it is connected to described microprocessor, and being used to import will be by the alphanumeric information of described microprocessor processes;
One display screen, it is connected with described microprocessor, is used to show the alphanumeric information that receives from described microprocessor;
One radio frequency (RF) antenna, it is connected with described microprocessor, is used for sending and receiving the RF signal;
One microphone, it is used to receive sound wave and described sound wave is converted to analog signal;
One analog to digital converter (ADC), it is connected with microprocessor, and the analog signal conversion that is used for receiving from described microphone is a digital data format;
One digital signal processor (DSP), it includes and is used for digital data coding for by the encoder of the RF signal format of described RF antenna transmission be used for the decoder of the numerical data decoding that will be received by described RF antenna;
One sense of hearing compensating for loss and damage module, it is connected with described DSP, is used for handling numerical data according to the hearing loss backoff algorithm;
One digital to analog converter (DAC), it is connected with described hearing loss compensating module, and the digital data conversion that is used for the processing that will receive from described hearing loss compensating circuit is an analog signal; And
One loud speaker, it is connected with described DAC, be used for receiving analog signal from described DAC, and output is fit to the sound wave of listening that the sense of hearing has the user of obstacle.
2. digital mobile phone according to claim 1, wherein said hearing loss compensating module comprise other the circuit integrated circuit in an independent integrated circuit (IC) chip with described DSP.
3. digital mobile phone according to claim 1, it further comprises an interface port, is used at least one earphone is connected to described DAC, wherein said at least one earphone receives described analog signal from described DAC, and exports the sound wave that can listen.
4. digital mobile phone according to claim 1, it further comprises a wave point, be used at least one wireless headset is connected to the output of described hearing loss compensating module, wherein said wave point comprises a reflector, be used to launch short range radio signals, and described at least one wireless headset includes a receiver, is used to receive described short range radio signals.
5. digital mobile phone according to claim 4, wherein said at least one wireless ear further includes one second digital to analog converter (DAC), the digital data conversion that is used for receiving is an analog signal, with a Microspeaker, be used for the sound wave of described analog signal conversion for listening from described the 2nd DAC.
6. digital mobile phone according to claim 1, wherein said mobile phone provides at least two signal processing paths, first signal processing path, when described mobile phone is operated as digital mobile phone, it is used, wherein the voice data that is received by described RF antenna is handled by described hearing loss compensating module, and secondary signal is handled the path, when described mobile phone is operated as an independent hearing aid apparatus, it is used, and the sound wave that is received by described microphone is converted into the numerical data pattern, and is handled by described hearing loss compensating module afterwards.
7. digital mobile phone according to claim 1, wherein said hearing loss compensating module comprises treatment circuit, is used for carrying out the hearing loss compensation program that is stored in described internal memory.
8. in the digital mobile phone according to claim 7, wherein a plurality of hearing loss compensation program are stored in the described internal memory, and each described hearing loss compensation program is at user option, and comprise the hearing loss backoff algorithm of a uniqueness.
9. digital mobile phone according to claim 8, it further comprises an automatic option program that is stored in the described internal memory, when it is performed, the environmental noise characteristic of measurement environment, and automatically determine in a plurality of hearing loss compensation program one of the most suitable described specific environment according to described environmental noise measurement afterwards.
10. digital mobile phone according to claim 9, if wherein determined described hearing loss compensation program is not in described internal memory, described automatic option program sends request to described microprocessor, downloading determined described hearing loss compensation program from oracle, and deposit selected described program in described internal memory.
11. digital mobile phone according to claim 7, wherein said hearing loss compensation program is downloaded from oracle, and deposits described internal memory in.
12. a hearing loss compensation communication system, it comprises:
One digital mobile phone, it is used for receiving and sends voice data, and wherein said phone comprises the voice data translation that sound wave is converted to the digital data format that is used to send and is used for the receiving circuit for the sound wave that can listen; With
One sense of hearing compensating for loss and damage module, it is connected with described circuit, be used for the described voice data of receiving further being handled according to the hearing loss backoff algorithm, wherein said processed voice data provides the sound wave of the enhancing that the listener that is suitable for the sense of hearing and has obstacle listens to when being converted to analog format.
13. hearing loss compensation communication system according to claim 1, wherein the described circuit in described digital mobile phone comprises:
One microphone, it is used to the analog signal representative that receives sound wave and produce described sound wave;
One analog to digital converter (ADC), it is connected with described microphone, and being used for described analog signal conversion is numerical data; With
One handles the path, and it can work described digital mobile phone is an independent hearing aid apparatus, and wherein the numerical data output from ADC sends to described hearing loss compensating module, is used for handling according to the algorithm of described hearing loss compensating module.
14. hearing loss compensation communication system according to claim 12, it further comprises an earphone, and it is connected to described digital mobile phone, and being used for has the listener of obstacle that the sound wave of described enhancing is provided to the sense of hearing.
15. hearing loss compensation communication system according to claim 14, it further comprises a digital to analog converter (DAC), it is connected to the output of described hearing loss compensating module, the digital data conversion that is used for that described receipts were handled is an analog signal, wherein said earphone is connected to the output of described DAC, be used to receive described analog signal, and with the sound wave of described analog signal conversion for listening.
16. hearing loss compensation communication system according to claim 14, wherein said earphone is wirelessly connected to described digital mobile phone, and described earphone includes a receiver, is used for from described digital mobile phone receiving electromagnetic signals.
17. hearing loss compensation communication system according to claim 12, wherein said hearing loss compensating module includes treatment circuit, and it is used for carrying out the hearing loss compensation program of the internal memory that is kept at described digital mobile phone.
18. hearing loss compensation communication system according to claim 17, wherein a plurality of hearing loss compensation program are stored in the described internal memory, and each described hearing loss compensation program is at user option, and comprises the hearing loss backoff algorithm of a uniqueness.
19. hearing loss compensation communication system according to claim 18, it comprises that further one is stored in the automatic option program in the described internal memory, when carrying out, the environmental noise characteristic of its measurement environment, and automatically determine in a plurality of hearing loss compensation program one of the most suitable described specific environment afterwards.
20. hearing loss compensation communication system according to claim 19, if wherein determined described hearing loss compensation program is not stored in the described internal memory, described automatic option program sends request to microprocessor, downloading determined described hearing loss compensation program by wireless connections, and the described program that will select deposits described internal memory in.
21. hearing loss compensation communication system according to claim 17, wherein said hearing loss compensation program is downloaded from oracle, and is stored in described internal memory.
22. a digital mobile phone that has built-in function of hearing aid, it comprises:
One shell;
One digital signal processor (DSP), it is included in the described shell, is used for carrying out to digital data Code And Decode;
One sense of hearing compensating for loss and damage module, it is connected to described DSP, is used for handling numerical data according to the hearing loss backoff algorithm;
One digital to analog converter (DAC), it is connected to described hearing loss compensating module, is used for receiving the described numerical data of handling from described hearing loss compensating circuit, and described data are converted to analog signal; And
One loud speaker, it is connected with described DAC, is used to receive described analog signal, and described analog signal conversion is had the listener's of obstacle sound wave for being fit to the sense of hearing.
23. digital mobile phone according to claim 22, wherein said hearing loss compensating module comprise one with other circuit integrated circuit on independent integrated circuit (IC) chip of described DSP.
24. digital mobile phone according to claim 22, it further comprises an interface port, it is used to connect at least one earphone to described DAC, and wherein said at least one earphone receives described analog signal from described DAC, and output is through the audible sound of hearing loss compensation.
25. digital mobile phone according to claim 22, it further comprises a wave point, it is used to connect the output of at least one wireless headset to described hearing loss compensating circuit, and wherein said wave point comprises a reflector, and it is used to launch short range radio signals.
26. digital mobile phone according to claim 25, wherein said at least one wireless ear includes a receiver that is used to receive short range radio signals, one second digital to analog converter (DAC), its digital data conversion that is used for described reception is an analog signal, with a Microspeaker, it is used for receiving described analog signal and generating the sound wave that can listen from described the 2nd DAC.
27. digital mobile phone according to claim 22, wherein said mobile phone provides at least two signal processing paths, first signal processing path, when described mobile phone is operated as digital mobile phone, it is used, wherein the voice data of the RF data format that receives by described RF antenna is handled by described hearing loss compensating module, and secondary signal is handled the path, when described mobile phone is operated as independent hearing aid apparatus, it is used, wherein the analog signal that receives by described microphone is converted into digital data format, and is handled by described hearing loss compensating module afterwards.
28. digital mobile phone according to claim 22, wherein said hearing loss compensating module comprises treatment circuit, and it is used for carrying out the hearing loss compensation program of the internal memory that is stored in described digital mobile phone.
29. digital mobile phone according to claim 28, wherein a plurality of hearing loss compensation program are stored in the described internal memory, and each described hearing loss compensation program is at user option, and the hearing loss compensate function of a uniqueness is provided.
30. digital mobile phone according to claim 29, it further comprises an automatic option program that is stored in the described internal memory, the environmental noise characteristic of its measurement environment when carrying out, and determine in a plurality of hearing loss compensation program one of the most suitable described specific environment afterwards automatically.
31. digital mobile phone according to claim 30, if wherein determined described hearing loss compensation program is not stored in the described internal memory, described automatic option program begins a download program, and described internal memory is downloaded and be stored in to wherein determined described hearing loss compensation program from oracle.
32. digital mobile phone according to claim 28, described internal memory is downloaded and be stored in to wherein said hearing loss compensation program from oracle.
33. a compensation method that is used to use the hearing loss of digital telephone, it comprises:
Accept a digital signal by digital telephone;
The described digital signal of decoding is to provide second digital signal according to predefined form;
According to the hearing loss backoff algorithm second digital signal is handled, one provides the digital signal through the hearing loss compensation;
Described digital signal through the hearing loss compensation is converted to analog signal; And
Described analog signal conversion there is the listener's of obstacle audible sound for being fit to the sense of hearing.
34. method according to claim 33, wherein said predefined form comprise pulse code coded modulation (PCM) form.
35. comprising, method according to claim 33, the action of wherein said processing second digital signal carry out the hearing loss compensation program that is stored in the described digital telephone internal memory.
36. method according to claim 35, described hearing loss compensation program is downloaded from oracle by described digital telephone, and is stored in described internal memory.
37. method according to claim 35, it further is included in a plurality of hearing loss compensation program of storage in the described internal memory, and each described hearing loss compensation program provides the hearing loss compensate function of a uniqueness.
38. according to the described method of claim 37, it further comprises:
The measurement environment noise parameters; And
According to the environmental noise parameter of measuring, the hearing loss compensation program of suitable described specific environment is described to determine one from a plurality of programs.
39. according to the described method of claim 38, it further comprises and automatically performs determined described hearing loss compensation program.
40. method according to claim 33, it further comprises by an earphone that is connected to described digital telephone provides the described sound wave of listening.
41. according to the described method of claim 40, wherein said earphone is wirelessly connected to described digital telephone.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53273603P | 2003-12-23 | 2003-12-23 | |
| US60/532,736 | 2003-12-23 | ||
| US10/967,966 | 2004-10-19 |
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| Publication Number | Publication Date |
|---|---|
| CN1998265A true CN1998265A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200480036433 Pending CN1998265A (en) | 2003-12-23 | 2004-12-15 | Digital cell phone with hearing aid functionality |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101953734A (en) * | 2010-11-11 | 2011-01-26 | 欧声医疗器械有限公司 | Mobile audition therapy equipment |
| CN102007776A (en) * | 2008-04-22 | 2011-04-06 | 伯斯有限公司 | Hearing assistance apparatus |
| CN101866651B (en) * | 2009-04-15 | 2012-02-22 | 陈伟江 | Method for implementing voice integrated circuit |
| US8767975B2 (en) | 2007-06-21 | 2014-07-01 | Bose Corporation | Sound discrimination method and apparatus |
| CN104301852A (en) * | 2014-09-28 | 2015-01-21 | 北京塞宾科技有限公司 | Hearing aid |
| US9078077B2 (en) | 2010-10-21 | 2015-07-07 | Bose Corporation | Estimation of synthetic audio prototypes with frequency-based input signal decomposition |
| CN109511072A (en) * | 2019-01-16 | 2019-03-22 | 长春大学 | A kind of bluetooth hearing assistance system |
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- 2004-12-15 CN CN 200480036433 patent/CN1998265A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8767975B2 (en) | 2007-06-21 | 2014-07-01 | Bose Corporation | Sound discrimination method and apparatus |
| CN102007776A (en) * | 2008-04-22 | 2011-04-06 | 伯斯有限公司 | Hearing assistance apparatus |
| US8611554B2 (en) | 2008-04-22 | 2013-12-17 | Bose Corporation | Hearing assistance apparatus |
| CN102007776B (en) * | 2008-04-22 | 2017-09-05 | 伯斯有限公司 | Auditory prosthesis |
| CN101866651B (en) * | 2009-04-15 | 2012-02-22 | 陈伟江 | Method for implementing voice integrated circuit |
| US9078077B2 (en) | 2010-10-21 | 2015-07-07 | Bose Corporation | Estimation of synthetic audio prototypes with frequency-based input signal decomposition |
| CN101953734A (en) * | 2010-11-11 | 2011-01-26 | 欧声医疗器械有限公司 | Mobile audition therapy equipment |
| CN101953734B (en) * | 2010-11-11 | 2013-07-31 | 欧声医疗器械有限公司 | Mobile hearing treatment device |
| CN104301852A (en) * | 2014-09-28 | 2015-01-21 | 北京塞宾科技有限公司 | Hearing aid |
| CN109511072A (en) * | 2019-01-16 | 2019-03-22 | 长春大学 | A kind of bluetooth hearing assistance system |
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