CN109672959A - A kind of signal processing method, terminal device and computer readable storage medium - Google Patents
A kind of signal processing method, terminal device and computer readable storage medium Download PDFInfo
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- CN109672959A CN109672959A CN201811580390.9A CN201811580390A CN109672959A CN 109672959 A CN109672959 A CN 109672959A CN 201811580390 A CN201811580390 A CN 201811580390A CN 109672959 A CN109672959 A CN 109672959A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
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Abstract
The present invention relates to field of communication technology, it is poor to provide a kind of signal processing method, terminal device and computer readable storage medium, the audio frequency effect to solve the problems, such as FM broadcast output.This method comprises: the working frequency points of detection frequency modulation broadcasting；The working frequency points be it is preset be disturbed frequency point in the case where, noise suppression processing is carried out to the audio signal of the frequency modulation broadcasting；Output noise inhibits treated audio signal.In this way, frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly, audio frequency effect is preferable.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of signal processing methods, terminal device and computer-readable
Storage medium.
Background technique
FM (Frequency Modulation, frequency modulation(PFM)) is broadcasted for terminal device, and being that one kind is common matches
It sets.And it is universal with what is shielded comprehensively, screen unit is easy to generate radiation interference to broadcast singal, and the FM of terminal device is caused to design
Difficulty it is increasing, especially EMC (Electro Magnetic Compatibility, Electro Magnetic Compatibility) design.For example,
The Driver IC (driving chip) of liquid crystal display display module and when the modules such as infrared work, can give off interference spectrum,
It when frequency spectrum falls in FM frequency range, can be received by FM antenna, so as to cause the audio exported after FM demodulation, there are interfering noises, cause defeated
Audio frequency effect out is poor.
Summary of the invention
The embodiment of the present invention provides a kind of signal processing method, terminal device and computer readable storage medium, to solve
The poor problem of the audio frequency effect of FM broadcast output.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, the embodiment of the invention provides a kind of signal processing methods, comprising:
Detect the working frequency points of frequency modulation broadcasting；
The working frequency points be it is preset be disturbed frequency point in the case where, the audio signal of the frequency modulation broadcasting is carried out
Noise suppression processing；
Output noise inhibits treated audio signal.
Second aspect, the embodiment of the present invention also provide a kind of terminal device, comprising:
Detection module, for detecting the working frequency points of frequency modulation broadcasting；
First processing module, for the working frequency points be it is preset be disturbed frequency point in the case where, to the frequency modulation
The audio signal of broadcast carries out noise suppression processing；
Output module inhibits treated audio signal for output noise.
The third aspect, the embodiment of the present invention also provide a kind of terminal device, comprising: memory, processor and are stored in
On reservoir and the computer program that can run on a processor, the processor realize institute as above when executing the computer program
The step in signal processing method stated.
Fourth aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, the computer-readable storage
Computer program is stored on medium, the computer program is realized when being executed by processor in signal processing method as described above
The step of.
In the embodiment of the present invention, the working frequency points of frequency modulation broadcasting are detected；It is preset be disturbed frequently in the working frequency points
In the case where point, noise suppression processing is carried out to the audio signal of the frequency modulation broadcasting；Output noise inhibits treated audio
Signal.In this way, frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly, audio frequency effect is preferable.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is one of the flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 1 a is the frequency modulation characteristic curve of untreated audio in the prior art；
Fig. 1 b is in the prior art to the frequency modulation characteristic curve after audio processing；
Fig. 2 is the two of the flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 3 is the three of the flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 4 is one of the structure chart of terminal device provided in an embodiment of the present invention；
Fig. 5 is the two of the structure chart of terminal device provided in an embodiment of the present invention；
Fig. 6 is the structure chart of the first processing module in terminal device provided in an embodiment of the present invention；
Fig. 7 is the structure chart of the addition submodule in terminal device provided in an embodiment of the present invention；
Fig. 8 is the three of the structure chart of terminal device provided in an embodiment of the present invention；
Fig. 9 is the four of the structure chart of terminal device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 be the flow chart of signal processing method provided in an embodiment of the present invention, as shown in Figure 1, include with
Lower step:
Step 101, the working frequency points for detecting frequency modulation broadcasting.
After terminal device opens frequency modulation broadcast function, terminal device can detecte the working frequency points of frequency modulation broadcasting, for example, eventually
End equipment opens broadcasting station FM87.5, and the working frequency points that terminal device detects frequency modulation broadcasting are 87.5.
Step 102, the working frequency points be it is preset be disturbed frequency point in the case where, to the audio of the frequency modulation broadcasting
Signal carries out noise suppression processing.
Wherein, terminal device can preset the frequency point being disturbed, and the frequency point being disturbed is stored to terminal device.
It can specifically be obtained by way of testing or calculating in the design phase of terminal and be disturbed frequency point, frequency point write-in will be disturbed
EMMC (Embedded Multi Media Card, embedded multi-media card) memory.
In this step, the working frequency points that terminal device will test are compared with preset frequency point, are judged preset
Whether include the working frequency points that detect, that is, whether the working frequency points detected are to be disturbed frequency point if being disturbed in frequency point.
If above-mentioned working frequency points are not to be disturbed frequency point, can in the way of the prior art output audio signal.
If above-mentioned working frequency points are to be disturbed frequency point, noise suppression processing, noise suppression can be carried out to audio signal
Processing can be by inhibiting noise so that the audio signal of output it is smooth and bottom is made an uproar become it is soft uniformly, reduce interference burr
Processing mode.
Wherein, the mode of noise suppression processing can specifically include: add white noise, in audio signal to suppress noise
Interference signal；Or the processing such as preemphasis, framing, adding window, filtering is carried out to audio signal, so that audio signal is more smooth,
To effectively inhibit noise.Furthermore it is also possible to close output when no reception audio signal, it is switched to smooth sound
Signal output, and output is opened when receiving audio signal, the output of noise is reduced, so that user obtains more comfortable body
It tests.Noise suppression processing mode is not limited to aforesaid way, and above is only to illustrate.
Step 103, output noise inhibit treated audio signal.
In this step, treated that above-mentioned audio signal exports by noise suppression for terminal device, obtain make an uproar on earth it is soft
Audio signal, the user experience is improved.
It should be understood that its elsewhere can also be carried out other than the audio signal of frequency-modulation broadcasting carries out noise suppression processing
Reason so that output frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly.The present invention to the processing mode of audio signal not
Make specific limit.
In the prior art in order to solve the problems, such as the interference noise of FM, by adjusting the side of the gain of softmute (soft mute)
Formula makes the noise of overall output become smaller.As shown in Figure 1a, Fig. 1 a is normal frequency modulation characteristic curve, and Fig. 1 b is by softmute
Treated frequency modulation characteristic curve.
In Fig. 1 a and Fig. 1 b, X-axis indicates RF (Radio Frequency, radio frequency) signal, and Y-axis identifies audio output normalizing
Change to its Maximum Output Level.The Maximum Output Level of 0 decibel of masterpiece audio output signal；Sensitivity definition is after making demodulation
The smallest radio frequency incoming level of audio output SNR (signal-to-noise ratio) >=26dB.It altogether include left channel audio, right channel sound in Fig. 2
Frequently, stereo noise and monophonic noise, these signals are relative to left channel audio intensity normalized.Radio frequency input
Signal strength has been more than that FR3 will be such that left and right acoustic channels are kept completely separate, and into stereo mode, and provides the stereo separation of 30dB
With the three-dimensional signal clutter ratio of 55dB；If radiofrequency signal, before F2 and RF3, the audio of left and right acoustic channels will start to mix,
The phenomenon that generating stereo and monophonic audio mixing.RF0 represents the sensitivity that FM tuner is mixed with stereo monophonic；RF1 table
Show without the hybrid-type sensitivity of three-dimensional monophone；When radio frequency incoming level reduces, noise intensity can increase sharply, i.e. the bottom of FM
Noise increases.When radiofrequency signal drops to RF0 or less, audio output only can decline about 6dB from maximum value, but noise is substantially
Degree increase to the same intensity of audio signal, so bottom make an uproar find out it is bigger.Fig. 2 is the frequency modulation characteristic comprising softmute
Curve uses softmute technology, when signal is lower than RF0, starts softmute function, audio and noise is allowed all to decay
14dB becomes to export low 20dB than maximal audio, keeps the noise of output smaller.
If desired improve FM interference noise in the manner described above, then needs to improve the gain of softmute.When gain is bigger,
Sound quality is better, but influences whether the number of tuning；And gain it is smaller when, the false platform searched out is more.And softmute function is only
The interference bottom there are sound quality when radio station, when for no radio station can be improved to make an uproar and can not improve, when terminal device is in letter
When number weaker place, the sound that interference bottom is made an uproar is very big.
And in embodiments of the present invention, by way of carrying out noise suppression processing to audio signal, output can be made
The bottom of audio signal make an uproar it is soft and uniform, improve audio frequency effect.
In the embodiment of the present invention, above-mentioned signal processing method can be applied to terminal device, such as: mobile phone, tablet computer
(Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal
Digital assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable
Equipment (Wearable Device) etc..
The signal processing method of the embodiment of the present invention detects the working frequency points of frequency modulation broadcasting；It is pre- in the working frequency points
If be disturbed frequency point in the case where, noise suppression processing is carried out to the audio signal of the frequency modulation broadcasting；Output noise inhibits
Audio signal that treated.In this way, frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly, audio frequency effect is preferable.
Referring to fig. 2, the main distinction of the present embodiment and above-described embodiment is, by adding white noise in audio signal
Mode, to audio signal carry out noise suppression processing.
Fig. 2 is the flow chart of signal processing method provided in an embodiment of the present invention, as shown in Figure 2, comprising the following steps:
Step 201, the working frequency points for detecting frequency modulation broadcasting.
The implementation of this step may refer to the description in step 101, and to avoid repeating, details are not described herein again.
Step 202, the working frequency points be it is preset be disturbed frequency point in the case where, in the audio of the frequency modulation broadcasting
White noise is added in signal.
The relevant explanation of this step may refer to the description of step 102.
In this step, after terminal device can demodulate the signal of frequency modulation broadcasting, the signal after demodulation is digitized
Processing, and white noise is added in the audio signal of digitized processing.Due to being added to white noise signal, white noise in audio signal
Sound can suppress back drop, so that audio signal is smoothened, bottom is made an uproar soft and uniform.
It is optionally, described to add white noise in the audio signal of the frequency modulation broadcasting, comprising:
Detect the signal quality of the demodulated signal of the frequency modulation broadcasting；
According to the signal quality of the demodulated signal, white noise is added in the audio signal, the audio signal is
Treated signal is carried out to the demodulated signal.
Wherein, demodulated signal can be the voice signal after demodulation, to the voice signal further progress number after demodulation
Change processing, available above-mentioned audio signal.
Terminal device detects the signal quality of demodulated signal, so as to determine that the signal of white noise is strong according to signal quality
The parameters such as degree, signal power.Wherein, signal quality can specifically be obtained by modes such as detection signal-to-noise ratio, received signal strengths.
When signal quality is poor, illustrate that interference signal is stronger；When signal quality is preferable, illustrate that interference signal is weaker.
Therefore, the white noise of certain power can be added, white noise is enabled to suppress interference signal according to signal quality, to subtract
Few interference of the interference signal to audio signal, improves the quality of audio signal.
Optionally, the signal quality of the demodulated signal of the detection frequency modulation broadcasting, comprising:
Detect the first received signal strength of the demodulated signal of the frequency modulation broadcasting；
The signal quality according to the demodulated signal, adds white noise in the audio signal, comprising:
According to the default corresponding relationship of the signal strength of received signal strength and white noise, determining receive with described first is believed
Second intensity of number corresponding white noise of intensity；
In the audio signal, the white noise of second intensity is added.
In this embodiment, terminal device can preset and store received signal strength and the signal of white noise is strong
The corresponding relationship of degree.Wherein, the signal strength of white noise and received signal strength can be correlation, in this way, white noise
Sound can be used in suppressing interference signal.
Terminal device determines and first after the first received signal strength for obtaining demodulated signal according to above-mentioned corresponding relationship
Second intensity of the corresponding white noise of received signal strength, enables the intensity of white noise to suppress interference signal, to improve
The effect of audio signal.
Optionally, after the audio signal to the frequency modulation broadcasting carries out noise suppression processing, the output noise
Before inhibiting treated audio signal, the method also includes:
Amplitude limiting processing is carried out to the audio signal using amplitude limiter circuit；
Audio signal that the output noise inhibits that treated, comprising:
Output noise inhibits the audio signal after processing and amplitude limiting processing.
In this embodiment, after carrying out noise suppression processing to audio signal, further audio signal is limited
Width processing.Specifically audio signal can be input to amplitude limiter circuit, to reduce the amplitude of audio signal.In such manner, it is possible to guarantee
Under different condition, the amplitude of white noise is consistent.
By the audio signal obtained after noise suppression processing and amplitude limiting processing, purer white noise and audio are obtained
The amplitude of signal is smaller, and sense of hearing effect is preferable.
Step 203, output noise inhibit treated audio signal.
The implementation of this step may refer to the description in step 103, and to avoid repeating, details are not described herein again.
Above-described embodiment in order to facilitate understanding is illustrated below in conjunction with specific embodiment.
As shown in figure 3, signal processing method the following steps are included:
Step 31, terminal device starting FM broadcast.
Step 32, terminal device obtain the current working frequency of FM broadcast.
Step 33 is disturbed frequency point according to preset, judges whether current working frequency is to be disturbed frequency point.
Wherein, it is previously stored in memory and is disturbed frequency point.
If step 34, current working frequency be disturbed frequency point, detect receive signal RSSI (received signal strength refers to
Show).
In this step, the quality for receiving signal is obtained by detection received signal strength indicator.
Step 35, according to the default corresponding relationship of received signal strength indicator and white noise intensity, according to currently received
Signal strength instruction, selects the white noise of corresponding power.
White noise is loaded into voice-frequency channel by step 36, by audio output to amplitude limiter circuit, and by amplitude limiter circuit to defeated
Noise signal out carries out amplitude limiting processing.
Step 37 passes through the output such as earphone or loudspeaker treated audio signal.
The structure chart of terminal device may refer to Fig. 4, can be realized the step in the above method by module shown in Fig. 4
Suddenly, the function of each module is as follows:
Wherein, power management module, including battery and power management integrated circuit etc. can give other moulds of terminal device
Block, such as LCM (liquid crystal display display module), FM chip, audio chip module for power supply.
FM antenna is responsible for receiving wireless FM signal.
FM modulation /demodulation module, including FM demodulation module, FM control module and FM analogue audio frequency processing module, can be used in
Demodulated signal and analog signal processing.
Central processing unit is responsible for the processing operation of data and to the control of whole system, such as to the sound after FM demodulation
Frequency module is controlled.
Memory, for storing the information of setting, e.g., system software, the corresponding relationship of setting is disturbed frequency point etc..
Audio processing modules, including audio solution coded treatment module and audio digital processing module, for solve coding and
To digitlization treated audio addition white noise etc..
Audio output channel selector 1, for being switched to voice-frequency channel output in the case where noiseless interference；It makes an uproar existing
In the case where acoustic jamming, switch is switched to audio amplitude limiting circuit and carries out amplitude limiting processing.
Amplitude limiter circuit controls the amplitude of audio output, avoids amplitude excessive for carrying out amplitude limiting processing to audio signal.
Audio output module, including earphone, speaker circuit etc..
Display screen, for showing FM or other information.
The signal processing method of the embodiment of the present invention adds the white noise of certain power in audio signal, effectively to press down
The intensity of back drop processed, white noise can change according to interference strength, and the audio bottom of output can be made, which to make an uproar, becomes soft uniform, mention
Sharp yupin effect.
It is the structure chart of terminal device provided in an embodiment of the present invention referring to Fig. 5, Fig. 5, as shown in figure 5, terminal device 500
It include: detection module 501, first processing module 502 and output module 503.
Detection module 501, for detecting the working frequency points of frequency modulation broadcasting；
First processing module 502, for the working frequency points be it is preset be disturbed frequency point in the case where, to the tune
The audio signal of frequency broadcast carries out noise suppression processing；
Output module 503 inhibits treated audio signal for output noise.
Optionally, the first processing module 502 is specifically used for, and adds white noise in the audio signal of the frequency modulation broadcasting
Sound.
Optionally, as shown in fig. 6, the first processing module 502 includes:
Detection sub-module 5021, the signal quality of the demodulated signal for detecting the frequency modulation broadcasting；
Addition submodule 5022 adds white for the signal quality according to the demodulated signal in the audio signal
Noise, the audio signal are to carry out treated signal to the demodulated signal.
Optionally, the detection sub-module 5021 is specifically used for, and detect the demodulated signal of the frequency modulation broadcasting first connects
Receive signal strength；
As shown in fig. 7, the addition submodule 5022 includes:
Determination unit 50221, for the default corresponding relationship according to the signal strength of received signal strength and white noise, really
Second intensity of fixed white noise corresponding with first received signal strength；
Adding unit 50222, for adding the white noise of second intensity in the audio signal.
Optionally, as shown in figure 8, the terminal device further include:
Second processing module 504, for carrying out amplitude limiting processing to the audio signal using amplitude limiter circuit；
The output module 503 is specifically used for, and output noise inhibits the audio signal after processing and amplitude limiting processing.
Terminal device 500 can be realized each process that terminal device is realized in above method embodiment, to avoid repeating,
Which is not described herein again.
The terminal device 500 of the embodiment of the present invention, in this way, frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly,
Audio frequency effect is preferable.
A kind of hardware structural diagram of Fig. 9 terminal device of each embodiment to realize the present invention, the terminal device 900
Including but not limited to: radio frequency unit 901, audio output unit 903, input unit 904, sensor 905, is shown network module 902
Show the components such as unit 906, user input unit 907, interface unit 908, memory 909, processor 910 and power supply 911.
It will be understood by those skilled in the art that terminal device structure shown in Fig. 9 does not constitute the restriction to terminal device, terminal is set
Standby may include perhaps combining certain components or different component layouts than illustrating more or fewer components.In the present invention
In embodiment, terminal device include but is not limited to mobile phone, tablet computer, laptop, palm PC, vehicle mobile terminals,
Wearable device and pedometer etc..
Wherein, processor 910, for detecting the working frequency points of frequency modulation broadcasting；
The working frequency points be it is preset be disturbed frequency point in the case where, the audio signal of the frequency modulation broadcasting is carried out
Noise suppression processing；
Audio output unit 903 inhibits treated audio signal for output noise.
In this way, frequency modulation broadcasting output audio signal bottom make an uproar it is soft uniformly, audio frequency effect is preferable.
Optionally, processor 910 executes the audio signal to the frequency modulation broadcasting and carries out noise suppression processing, packet
It includes:
White noise is added in the audio signal of the frequency modulation broadcasting.
Optionally, processor 910, which executes, described adds white noise in the audio signal of the frequency modulation broadcasting, comprising:
Detect the signal quality of the demodulated signal of the frequency modulation broadcasting；
According to the signal quality of the demodulated signal, white noise is added in the audio signal, the audio signal is
Treated signal is carried out to the demodulated signal.
Optionally, processor 910 executes the signal quality of the demodulated signal of the detection frequency modulation broadcasting, comprising:
Detect the first received signal strength of the demodulated signal of the frequency modulation broadcasting；
The signal quality according to the demodulated signal, adds white noise in the audio signal, comprising:
According to the default corresponding relationship of the signal strength of received signal strength and white noise, determining receive with described first is believed
Second intensity of number corresponding white noise of intensity；
In the audio signal, the white noise of second intensity is added.
Optionally, after processor 910 executes the audio signal progress noise suppression processing to the frequency modulation broadcasting,
Before audio signal that the output noise inhibits that treated, it is also used to:
Amplitude limiting processing is carried out to the audio signal using amplitude limiter circuit；
Audio signal that the output noise inhibits that treated, comprising:
Output noise inhibits the audio signal after processing and amplitude limiting processing.
It should be understood that the embodiment of the present invention in, radio frequency unit 901 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 910 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 901 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 901 can also by wireless communication system and network and other set
Standby communication.
Terminal device provides wireless broadband internet by network module 902 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 903 can be received by radio frequency unit 901 or network module 902 or in memory 909
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 903 can also provide and end
The relevant audio output of specific function that end equipment 900 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 903 includes loudspeaker, buzzer and receiver etc..
Input unit 904 is for receiving audio or video signal.Input unit 904 may include graphics processor
(Graphics Processing Unit, GPU) 9041 and microphone 9042, graphics processor 9041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 906.Through graphics processor 9041, treated that picture frame can be deposited
Storage is sent in memory 909 (or other storage mediums) or via radio frequency unit 901 or network module 902.Mike
Wind 9042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 901 is converted in the case where telephone calling model.
Terminal device 900 further includes at least one sensor 905, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 9061, and proximity sensor can close when terminal device 900 is moved in one's ear
Display panel 9061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify terminal device posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 905 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 906 is for showing information input by user or being supplied to the information of user.Display unit 906 can wrap
Display panel 9061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 9061.
User input unit 907 can be used for receiving the number or character information of input, and generate the use with terminal device
Family setting and the related key signals input of function control.Specifically, user input unit 907 include touch panel 9071 and
Other input equipments 9072.Touch panel 9071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 9071 or in touch panel 9071
Neighbouring operation).Touch panel 9071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 910, receiving area
It manages the order that device 910 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 9071.In addition to touch panel 9071, user input unit 907 can also include other input equipments
9072.Specifically, other input equipments 9072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 9071 can be covered on display panel 9061, when touch panel 9071 is detected at it
On or near touch operation after, send processor 910 to determine the type of touch event, be followed by subsequent processing device 910 according to touching
The type for touching event provides corresponding visual output on display panel 9061.Although in Fig. 9, touch panel 9071 and display
Panel 9061 is the function that outputs and inputs of realizing terminal device as two independent components, but in some embodiments
In, can be integrated by touch panel 9071 and display panel 9061 and realize the function that outputs and inputs of terminal device, it is specific this
Place is without limitation.
Interface unit 908 is the interface that external device (ED) is connect with terminal device 900.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 908 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in terminal device 900 or can be used in 900 He of terminal device
Data are transmitted between external device (ED).
Memory 909 can be used for storing software program and various data.Memory 909 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 909 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 910 is the control centre of terminal device, utilizes each of various interfaces and the entire terminal device of connection
A part by running or execute the software program and/or module that are stored in memory 909, and calls and is stored in storage
Data in device 909 execute the various functions and processing data of terminal device, to carry out integral monitoring to terminal device.Place
Managing device 910 may include one or more processing units；Preferably, processor 910 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 910.
Terminal device 900 can also include the power supply 911 (such as battery) powered to all parts, it is preferred that power supply 911
Can be logically contiguous by power-supply management system and processor 910, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, terminal device 900 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of terminal device, including processor 910, and memory 909 is stored in
On memory 909 and the computer program that can run on the processor 910, the computer program are executed by processor 910
Each process in the above-mentioned signal processing method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating, this
In repeat no more.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each process of above-mentioned signal processing method embodiment, and energy when being executed by processor
Reach identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium, such as only
Read memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation
RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (12)
1. a kind of signal processing method is applied to terminal device characterized by comprising
Detect the working frequency points of frequency modulation broadcasting；
The working frequency points be it is preset be disturbed frequency point in the case where, noise is carried out to the audio signal of the frequency modulation broadcasting
Inhibition processing；
Output noise inhibits treated audio signal.
2. the method according to claim 1, wherein the audio signal to the frequency modulation broadcasting carries out noise
Inhibition processing, comprising:
White noise is added in the audio signal of the frequency modulation broadcasting.
3. according to the method described in claim 2, it is characterized in that, it is described added in the audio signal of the frequency modulation broadcasting it is white
Noise, comprising:
Detect the signal quality of the demodulated signal of the frequency modulation broadcasting；
According to the signal quality of the demodulated signal, white noise is added in the audio signal, the audio signal is to institute
It states demodulated signal and carries out treated signal.
4. according to the method described in claim 3, it is characterized in that, the signal of the demodulated signal of the detection frequency modulation broadcasting
Quality, comprising:
Detect the first received signal strength of the demodulated signal of the frequency modulation broadcasting；
The signal quality according to the demodulated signal, adds white noise in the audio signal, comprising:
It is determining strong with the first reception signal according to the default corresponding relationship of the signal strength of received signal strength and white noise
Spend the second intensity of corresponding white noise；
In the audio signal, the white noise of second intensity is added.
5. method according to any one of claims 1 to 4, which is characterized in that the audio to the frequency modulation broadcasting is believed
After number carrying out noise suppression processing, before audio signal that the output noise inhibits that treated, the method also includes:
Amplitude limiting processing is carried out to the audio signal using amplitude limiter circuit；
Audio signal that the output noise inhibits that treated, comprising:
Output noise inhibits the audio signal after processing and amplitude limiting processing.
6. a kind of terminal device characterized by comprising
Detection module, for detecting the working frequency points of frequency modulation broadcasting；
First processing module, for the working frequency points be it is preset be disturbed frequency point in the case where, to the frequency modulation broadcasting
Audio signal carry out noise suppression processing；
Output module inhibits treated audio signal for output noise.
7. terminal device according to claim 6, which is characterized in that the first processing module is specifically used for, described
White noise is added in the audio signal of frequency modulation broadcasting.
8. terminal device according to claim 7, which is characterized in that the first processing module includes:
Detection sub-module, the signal quality of the demodulated signal for detecting the frequency modulation broadcasting；
It adds submodule and adds white noise in the audio signal for the signal quality according to the demodulated signal, it is described
Audio signal is to carry out treated signal to the demodulated signal.
9. terminal device according to claim 8, which is characterized in that the detection sub-module is specifically used for, described in detection
First received signal strength of the demodulated signal of frequency modulation broadcasting；
The addition submodule includes:
Determination unit, for the default corresponding relationship according to the signal strength of received signal strength and white noise, it is determining with it is described
Second intensity of the corresponding white noise of the first received signal strength；
Adding unit, for adding the white noise of second intensity in the audio signal.
10. according to the described in any item terminal devices of claim 6 to 9, which is characterized in that the terminal device further include:
Second processing module, for carrying out amplitude limiting processing to the audio signal using amplitude limiter circuit；
The output module is specifically used for, and output noise inhibits the audio signal after processing and amplitude limiting processing.
11. a kind of terminal device characterized by comprising memory, processor and storage are on a memory and can be in processor
The computer program of upper operation, the processor are realized as described in any one of claim 1 to 5 when executing the computer program
Signal processing method in step.
12. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence is realized when the computer program is executed by processor as in signal processing method described in any one of claim 1 to 5
Step.
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