CN103167197B - Method and terminal with functions of shared voice frequency noise reduction and echo cancellation - Google Patents
Method and terminal with functions of shared voice frequency noise reduction and echo cancellation Download PDFInfo
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- CN103167197B CN103167197B CN201110426250.8A CN201110426250A CN103167197B CN 103167197 B CN103167197 B CN 103167197B CN 201110426250 A CN201110426250 A CN 201110426250A CN 103167197 B CN103167197 B CN 103167197B
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Abstract
The invention discloses a method and a terminal with the functions of shared voice frequency noise reduction and echo cancellation. The method with the functions of shared voice frequency noise reduction and echo cancellation comprises the following steps: a data path from a voice output path to a voice input path is added inside a communication terminal, the communication terminal receives a voice data flow from an operating terminal through a near field communication module, the communication terminal processes the voice data flow by using the voice output path, the added data path transfers the processed voice data flow to the voice input path to be processed, the voice input path transfers the processed voice data flow to a noise reduction and echo cancellation module, and noise reduction and echo cancellation treatment are carried on the processed voice data flow. The method and the terminal with the functions of shared voice frequency noise reduction and echo cancellation voice data flow achieve the purpose that the voice data flow is directly transferred to the noise reduction and echo cancellation module through the voice input path to receive noise reduction and echo cancellation treatment.
Description
Technical field
The present invention relates near field communication technology, refer to a kind of shared audio defeat especially and the disappear method of echo function and terminal.
Background technology
Near-field communication (NFC, Near Field Communication), i.e. near field communication (NFC).Usual so-called NFC technique is then a kind of in-plant high frequency wireless communication technology, and available range is about 10 centimetres, can realize electronic identity identification or transfer of data, such as the function such as credit card, access card.Early stage by this technology, user can substitute the contact type intelligent cards such as mass transit card, bank card, employee job card, access card, member card with mobile phone, radio-frequency (RF) identification (RFID, Radio Frequency IDentification) label information subsidiary on billboard can also be read.
At present, along with development and the research application of NFC technique, wireless near field communication can be carried out at mobile device, consumer electronics product, PC and smart control Tool Room.NFC provides a kind of solution of simple, touch, can allow user's simple, intuitive ground exchange message, access content and service.
NFC have with low cost, facilitate the features such as easy-to-use and richer intuitive, this allows it seem in some field to have more potentiality---NFC, by the combination of chip, an antenna and some softwares, can realize the communication of various equipment in a few cm range.
At present, the development of mobile phone is towards high-endization and the development of specialized both direction, the relative good looking appearance of high-end handsets, specialty mobile phone is relatively by force functional, if both can be combined use, be so a kind of extraordinary experience concerning user, therefore, a kind ofly based on NFC, the technology that high-end handsets and professional mobile phone couple together arisen at the historic moment.
In this technology, professional mobile phone is called as communicating terminal, and high-end handsets is called as operating terminal.User is at the enterprising line operate of operating terminal, and NFC technique provides closely transfer of data between operating terminal and communicating terminal, and communicating terminal is responsible for the far field communication between base station.
But in some cases, communicating terminal directly cannot be sent to noise reduction based on the audio data stream that NFC technique receives and the echo module that disappears carries out relevant treatment, and reason comprises platform restriction, software encapsulation, realization difficulty etc.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of shared audio defeat and the method for the echo function that disappears and terminal, with solve communicating terminal to the audio data stream of the operating terminal received based on NFC technique, cannot directly carry out noise reduction and the problem of the echo resume module that disappears.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of shared audio defeat and the method for the echo function that disappears, add one from voice output passage to the data path of Speech input passage in communicating terminal inside, the method also comprises:
Communicating terminal receives the audio data stream from operating terminal by near field communication module;
Communicating terminal uses voice output passage to process described audio data stream, and sends the described audio data stream after processing to Speech input passage by the described data path that adds and process;
Speech input passage sends the described audio data stream after process to noise reduction and the echo module that disappears carries out noise reduction and the echo process that disappears.
Further, described communicating terminal receives the audio data stream from operating terminal by near field communication module, is specially:
Described communicating terminal receives the audio data stream of described operating terminal by the first near field communication module transmission of self by the second near field communication module of self.
Further, described use voice output passage processes described audio data stream, is specially:
Described audio data stream is transformed into analog signal by digital signal, is amplified afterwards.
Further, send described audio data stream to Speech input passage and process, be specially:
Audio data stream after the process of described voice output passage is carried out low noise amplification, is transformed into digital signal by analog signal afterwards.
Further, before communicating terminal receives the audio data stream from operating terminal by near field communication module, the method also comprises:
Described operating terminal gathers audio data stream by microphone, and uses sound collection equipment that the audio data stream gathered is carried out to low noise amplification, is transformed into digital signal by analog signal afterwards.
Further, carry out noise reduction and disappear after echo process, the method also comprises:
The radio-frequency (RF) receiving and transmission module of communicating terminal will carry out noise reduction and speech data after the echo process that disappears flows through antenna and sends.
Further, the method also comprises:
After the radio-frequency (RF) receiving and transmission module of described communicating terminal receives audio data stream by antenna, carry out noise reduction and the echo process that disappears through noise reduction and the echo module that disappears, be then sent to described operating terminal by the second near field communication module;
First near field communication module of described operating terminal sends audio playing device to after receiving the audio data stream from described communicating terminal;
Audio data stream is transformed into analog signal by digital signal, is amplified afterwards by described audio playing device, and is play by loud speaker.
Present invention also offers a kind of communicating terminal, comprise near field communication module, voice output passage, Speech input passage, noise reduction and disappear echo module and radio-frequency (RF) receiving and transmission module, described voice output passage is connected by a data path with described Speech input passage; Wherein:
Described near field communication module, for receiving the audio data stream from operating terminal, and sends described voice output passage to;
Described voice output passage, for processing described audio data stream, and sends the described audio data stream after process to described Speech input passage by described data path;
Described Speech input passage, sends described noise reduction to and the echo module that disappears after processing described audio data stream;
Described noise reduction and the echo module that disappears, for carrying out noise reduction and the echo process that disappears to described audio data stream;
Described radio-frequency (RF) receiving and transmission module, for carrying out noise reduction and the speech data after echo process that disappears flows through antenna and sends.
Further, described voice output passage, also for described audio data stream is transformed into analog signal by digital signal, is amplified afterwards;
Described Speech input passage, also for the audio data stream after the process of described voice output passage is carried out low noise amplification, is transformed into digital signal by analog signal afterwards.
Further, described radio-frequency (RF) receiving and transmission module, also for after receiving audio data stream by antenna, and sends described noise reduction to and the echo module that disappears;
Described noise reduction and the echo module that disappears, also for carrying out noise reduction to described audio data stream and after the echo process that disappears, sending described near field communication module to;
Described near field communication module, also for sending described audio data stream to described operating terminal.
The present invention shares audio defeat and the disappear method of echo function and terminal, by improving the hardware of communicating terminal: with the addition of one from voice output passage to the data path of Speech input passage, achieving and directly sending audio data stream to noise reduction via Speech input passage and the echo module that disappears carries out noise reduction and the process of the echo that disappears.
Accompanying drawing explanation
Fig. 1 is that the present invention shares audio defeat and the system configuration schematic diagram of the echo function scheme that disappears;
Fig. 2 is the internal logic structure schematic diagram of voice output passage;
Fig. 3 is the internal logic structure schematic diagram of Speech input passage.
Embodiment
The present invention shares audio defeat and the basic thought of the echo function scheme that disappears is: operating terminal is only responsible for the acquired original of voice data and the broadcasting of audio code stream, audio defeat and the operation such as echo that disappears are by the noise reduction of shared communicating terminal and the echo functional realiey that disappears, and the software and hardware implementation of two terminals is simple.
Be illustrated in figure 1 the present invention and share audio defeat and the system configuration schematic diagram of the echo function scheme that disappears, be made up of operating terminal and communicating terminal two parts.
Wherein, the hardware configuration of the present invention to communicating terminal inside is changed: with the addition of one from voice output passage to the data path of Speech input passage.
Concrete, the processing procedure of speech data is as follows:
At sending direction:
Audio data stream inputs from the microphone of operating terminal, after sound collection equipment process, by the first near field communication module, send to communicating terminal;
Second near field communication module of communicating terminal receives the audio data stream from operating terminal, voice output passage is used to play audio data stream, simultaneously, after the data path that speech data flows through interpolation enters the process of Speech input passage, enter noise reduction and carry out noise reduction and the echo process that disappears with the echo module that disappears, then sent by radio-frequency (RF) receiving and transmission module, antenna.
At receive direction:
After the radio-frequency (RF) receiving and transmission module of communicating terminal receives audio data stream by antenna, carry out noise reduction and the echo process that disappears through noise reduction and the echo module that disappears, be then sent to operating terminal by the second near field communication module;
First near field communication module of operating terminal directly sends audio playing device to after receiving the audio data stream from communicating terminal, is play by loud speaker (or receiver, earphone etc.).
Wherein, the voice output passage of communicating terminal has been mainly used in audio data stream and has been amplified after conversion to the conversion of analog signal by digital signal, as shown in Figure 2, its data path exported through adding sends Speech input passage to its internal logic structure.
The Speech input passage of communicating terminal has been mainly used in audio data stream and has carried out low noise amplification by analog signal before switching to the conversion of digital signal, and as shown in Figure 3, its input is from voice output passage its internal logic structure.
In addition, serial communication is adopted between operating terminal and the first and second near field communication module of communicating terminal, both can adopt wired serial ports (such as RS232), also can adopt wireless serial (RFCOMM of such as bluetooth and infrared communication etc.).
Based on the processing procedure of above-mentioned speech data, the present invention shares audio defeat and the method for the echo function that disappears, and comprising:
Step 1, communicating terminal inside add one from voice output passage to the data path of Speech input passage.
Step 2, communicating terminal receive the audio data stream from operating terminal by near field communication module.
Concrete, as shown in Figure 1, communicating terminal receives the audio data stream of operating terminal by the first near field communication module transmission of self by the second near field communication module of self.
Before this step, the method also comprises: operating terminal gathers audio data stream by microphone, and uses sound collection equipment to process the audio data stream gathered, and sends to communicating terminal afterwards by the first near field communication module of self.
Step 3, communicating terminal use voice output passage to process audio data stream, and send the audio data stream after processing to Speech input passage by the data path that adds and process.
Voice output passage is treated to audio data stream: audio data stream is transformed into analog signal by digital signal, is amplified afterwards; Speech input passage is treated to audio data stream: the audio data stream after the process of voice output passage is carried out low noise amplification, is transformed into digital signal by analog signal afterwards.
Step 4, Speech input passage send the audio data stream after process to noise reduction and the echo module that disappears carries out noise reduction and the echo process that disappears.
Complete noise reduction and disappear after echo process, the radio-frequency (RF) receiving and transmission module of communicating terminal will carry out noise reduction and speech data after the echo process that disappears flows through antenna and sends.
The invention allows for a kind of inverse process of above-mentioned processing procedure, specific as follows:
After the radio-frequency (RF) receiving and transmission module of communicating terminal receives audio data stream by antenna, carry out noise reduction and the echo process that disappears through noise reduction and the echo module that disappears, be then sent to operating terminal by the second near field communication module;
First near field communication module of operating terminal directly sends audio playing device to after receiving the audio data stream from described communicating terminal and processes, and is then play by loud speaker.
The invention allows for and be a kind ofly applicable to above-mentioned shared audio defeat and the communicating terminal of method of the echo function that disappears, as shown in Figure 1, comprise near field communication module (being the second near field communication module in Fig. 1), voice output passage, Speech input passage, noise reduction and disappear echo module and radio-frequency (RF) receiving and transmission module, especially, voice output passage is connected by a data path with Speech input passage; Wherein:
For the process sending audio data stream, concrete:
Near field communication module, for receiving the audio data stream from operating terminal, and sends voice output passage to;
Voice output passage, for processing audio data stream, and sends the audio data stream after process to Speech input passage by data path;
Speech input passage, for sending the audio data stream after process to noise reduction and the echo module that disappears;
Noise reduction and the echo module that disappears, for carrying out noise reduction and the echo process that disappears to audio data stream;
Radio-frequency (RF) receiving and transmission module, for carrying out noise reduction and the speech data after echo process that disappears flows through antenna and sends.
Wherein, voice output passage, also for audio data stream is transformed into analog signal by digital signal, is amplified afterwards; Speech input passage, also for the audio data stream after the process of voice output passage is carried out low noise amplification, is transformed into digital signal by analog signal afterwards.
For the process receiving audio data stream, concrete:
Radio-frequency (RF) receiving and transmission module, also for after receiving audio data stream by antenna, and sends noise reduction to and the echo module that disappears;
Noise reduction and the echo module that disappears, also for carrying out noise reduction to audio data stream and after the echo process that disappears, sending near field communication module to;
Near field communication module, also for sending audio data stream to operating terminal.
As can be seen here, adopt technique scheme of the present invention, based on the near-field communication between operating terminal and communicating terminal, only at the enterprising line operate of operating terminal (comprise button, the input and output of sound, UI mutual etc.), far field communication need be responsible for by communicating terminal when can realize call.Especially, from voice output passage to the data path of Speech input passage in communicating terminal, achieve the direct noise reduction that sent to by audio data stream and carry out noise reduction and the process of the echo that disappears with the echo module that disappears.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (7)
1. a method for shared audio defeat and the echo function that disappears, is characterized in that, change hardware configuration in communicating terminal inside, add one from voice output passage to the data path of Speech input passage, the method also comprises:
Communicating terminal receives the audio data stream from operating terminal by near field communication module;
Described audio data stream is transformed into analog signal by digital signal, is amplified afterwards by communicating terminal, and by the described data path added, the described audio data stream after process is sent to Speech input passage and processes;
Audio data stream after the process of described voice output passage carries out low noise amplification by Speech input passage, be transformed into digital signal by analog signal afterwards sends noise reduction to and the echo module that disappears carries out noise reduction and the echo process that disappears.
2. share the method for audio defeat and the echo function that disappears according to claim 1, it is characterized in that, described communicating terminal receives the audio data stream from operating terminal by near field communication module, is specially:
Described communicating terminal receives the audio data stream of described operating terminal by the first near field communication module transmission of self by the second near field communication module of self.
3. share the method for audio defeat and the echo function that disappears according to claim 1, it is characterized in that, before communicating terminal receives the audio data stream from operating terminal by near field communication module, the method also comprises:
Described operating terminal gathers audio data stream by microphone, and uses sound collection equipment that the audio data stream gathered is carried out to low noise amplification, is transformed into digital signal by analog signal afterwards.
4. share audio defeat and the method for echo function of disappearing according to claim 3, it is characterized in that, carry out noise reduction and after the echo process that disappears, the method also comprises:
The radio-frequency (RF) receiving and transmission module of communicating terminal will carry out noise reduction and speech data after the echo process that disappears flows through antenna and sends.
5. share the method for audio defeat and the echo function that disappears according to claim 4, it is characterized in that, the method also comprises:
After the radio-frequency (RF) receiving and transmission module of described communicating terminal receives audio data stream by antenna, carry out noise reduction and the echo process that disappears through noise reduction and the echo module that disappears, be then sent to described operating terminal by the second near field communication module;
First near field communication module of described operating terminal sends audio playing device to after receiving the audio data stream from described communicating terminal;
Audio data stream is transformed into analog signal by digital signal, is amplified afterwards by described audio playing device, and is play by loud speaker.
6. a communicating terminal, it is characterized in that, comprise near field communication module, voice output passage, Speech input passage, noise reduction and disappear echo module and radio-frequency (RF) receiving and transmission module, in described communicating terminal inside, hardware configuration is changed, described voice output passage is connected by a data path with described Speech input passage; Wherein:
Described near field communication module, for receiving the audio data stream from operating terminal, and sends described voice output passage to;
Described voice output passage, for described audio data stream is transformed into analog signal by digital signal, is amplified afterwards, and sends the described audio data stream after process to described Speech input passage by described data path;
Described Speech input passage, for the audio data stream after the process of described voice output passage being carried out low noise amplification, is transformed into digital signal by analog signal afterwards and sends described noise reduction to and the echo module that disappears;
Described noise reduction and the echo module that disappears, for carrying out noise reduction and the echo process that disappears to described audio data stream;
Described radio-frequency (RF) receiving and transmission module, for carrying out noise reduction and the speech data after echo process that disappears flows through antenna and sends.
7. communicating terminal according to claim 6, is characterized in that,
Described radio-frequency (RF) receiving and transmission module, also for after receiving audio data stream by antenna, and sends described noise reduction to and the echo module that disappears;
Described noise reduction and the echo module that disappears, also for carrying out noise reduction to described audio data stream and after the echo process that disappears, sending described near field communication module to;
Described near field communication module, also for sending described audio data stream to described operating terminal.
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| CN201110426250.8A CN103167197B (en) | 2011-12-19 | 2011-12-19 | Method and terminal with functions of shared voice frequency noise reduction and echo cancellation |
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| CN103167197B true CN103167197B (en) | 2015-01-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104301566A (en) * | 2014-09-30 | 2015-01-21 | 成都英博联宇科技有限公司 | Intelligent conference telephone based on characteristic sounds |
| CN107071369A (en) * | 2017-05-27 | 2017-08-18 | 深圳市景阳科技股份有限公司 | Monitoring method, device and its application of many objects can be monitored |
| CN111696567B (en) * | 2020-06-12 | 2022-04-01 | 思必驰科技股份有限公司 | Noise estimation method and system for far-field call |
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| US7672693B2 (en) * | 2003-11-10 | 2010-03-02 | Nokia Corporation | Controlling method, secondary unit and radio terminal equipment |
| US7680265B2 (en) * | 2003-12-12 | 2010-03-16 | Continental Automotive Systems, Inc. | Echo canceler circuit and method |
| JP2009539306A (en) * | 2006-05-31 | 2009-11-12 | アギア システムズ インコーポレーテッド | Noise reduction with mobile communication devices in non-call situations |
| CN101014073B (en) * | 2007-02-13 | 2011-06-29 | 北京中星微电子有限公司 | Method, system and equipment for realizing echo cancellation |
| CN101924581A (en) * | 2010-07-29 | 2010-12-22 | 上海慧翰信息技术有限公司 | Communication device |
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