CN102629471A - Multi-decoder audio system, system signal flow and composed mobile equipment - Google Patents
Multi-decoder audio system, system signal flow and composed mobile equipment Download PDFInfo
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- CN102629471A CN102629471A CN2012100579551A CN201210057955A CN102629471A CN 102629471 A CN102629471 A CN 102629471A CN 2012100579551 A CN2012100579551 A CN 2012100579551A CN 201210057955 A CN201210057955 A CN 201210057955A CN 102629471 A CN102629471 A CN 102629471A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/066—Telephone sets adapted for data transmision
Abstract
The present invention relates to the field of decoder audio system technology, more specifically relating to a multi-decoder audio system which comprises a central processing unit (CPU), a digital signal processor (DSP) and a modem. The central processing unit (CPU) and the modem are connected to the digital signal processor (DSP). The system also comprises at least an audio decoder. The invention also provides mobile equipment composed of the multi-decoder audio system. According to an audio decoding system and the composed mobile equipment, normal and smoothness of a voice in a voice conversation can be ensured, and good voice quality in playing an audio file can be obtained.
Description
Technical field
The present invention relates to demoder audio system technical field, the mobile device that is specifically related to a kind of many demoders audio system, system signal treatment scheme and forms by this system.
Background technology
Mobile device development in recent years is swift and violent; Especially smart mobile phone changes with each passing day; The technology of demoders such as audio frequency, video, image is equally also in continuous renewal; Wherein the Audiotechnica of smart mobile phone is also ripe gradually, and the audio codec in the mobile phone can be through accepting the I2S signal that DSP (digital signal processor) passes over and convert simulating signal to send like earphone telephone receiver to; The terminal device of loudspeaker and so on is play the audio frequency of various forms; Simultaneously also can accept to be converted into digital signal and store from input simulating signals such as microphones, when voice playing, can be through the output that codec internal path switch switches different terminals be set.
The patent No. is that 200920028574.4 utility model patent has been announced a kind of mobile communication equipment that suppresses the audio system of echo and have this system; It comprises audio treatment unit, receiver, loudspeaker, signal transmitter/receiver unit; Also comprise application processor, audio codec and audio-frequency noise processor; System's echo can effectively be eliminated by this system, suppresses neighbourhood noise, the audio signal quality of raising system output.Be applied to can improve in the mobile communication equipment speech quality of equipment, and then the complete machine performance of lifting means.
The patent No. is that 200810039494.9 patent of invention has been announced method and the device thereof that a kind of audio frequency of mobile terminal is handled; To reach,, different audio signals (forms such as MIDI, MP3, WAV) is handled respectively through existing portable terminal basic framework is added special audio decoder chip to mobile terminal power low consumption, the high-level requirement of tonequality; When the audio decoder chip is decoded; Promptly the MIDI audio frequency of base band integrated circuit output is made bypass and handle, the extended formatting audio frequency of memory device input is made decoding processing, and when the audio decoder chip operation time, base band integrated circuit state is arranged to dormant state, combine audio output apparatus different again; The output signal amplitude of adjustment volume; Thereby reduced power consumption, guaranteed the needs of long period voice playing, improved the voice playing quality simultaneously; Taken into account the different needs of user, made it under varying environment, can both reach the effect of clear and smooth for multimedia audio.
Just because of audio decoder will be taken into account various terminal devices; Solve problems such as noise reduction sound, elimination stereo echo; The size of IC also will remain in the less scope that compares simultaneously; Therefore the usefulness of non-mimic channel just must be sacrificed to some extent, and the tonequality of causes audio system just can't compare favourably with the tonequality of exclusive audio frequency message chip like this.
Summary of the invention
The technical matters that the present invention will solve provides a kind ofly can take into account various terminal devices, solves the noise reduction sound, eliminates many demoders audio system of stereo echo etc.
The present invention realizes through following technical scheme; A kind of many demoders audio system; Comprise central processor CPU, digital signal processor DSP, modulator-demodular unit; Said central processor CPU, modulation regulator are connected in digital signal processor DSP, also comprise at least one audio decoder.
Preferably; Many demoders audio system of the present invention; Said audio decoder number is 2; Said first audio decoder is the audio decoder of processed voice conversation, and said second audio decoder is for handling the audio decoder that multimedia audio is play, and the two links to each other with digital signal processor DSP respectively.
Preferably, many demoders audio system of the present invention, said first audio decoder also links to each other with digital microphone, telephone receiver, and said second audio decoder also links to each other with earphone, loudspeaker.
Preferably, many demoders audio system of the present invention, the model of said first audio decoder are 8200 serial audio decoders, and the model of said second audio decoder is Mobile Sounds 3 audio decoders.
Another object of the present invention provides a kind of signal processing flow of many demoders audio system, specifically comprises:
The voice playing process: said audio file is under the control of central processor CPU; Be converted into the I2S signal via digital signal processor DSP; Pass to first audio decoder and second audio decoder simultaneously; Judge that through central processor CPU which terminal device this audio frequency should be exported at, open this equipment path, displaying audio file then.
Voice call process: the path of opening said telephone receiver and microphone; Modulator-demodular unit received pulse signal; Decoding passes to telephone receiver through digital signal processor DSP after the processing; First audio decoder receives the simulating signal that microphone gets into simultaneously; Be converted into the I2S signal, do being converted into pulse signal by modulator-demodular unit after the digital processing and sending through digital signal processor DSP.
Preferably, many demoders audio system of the present invention, the process that said central processor CPU is judged realizes through software.
The mobile device that the present invention also provides a kind of above-mentioned many demoders audio system to form, said mobile device comprises following 6 kinds of states:
State Z1: said digital microphone passage, telephone receiver passage, earphone passage, loudspeaker channel are all closed;
State Z2: said digital microphone passage, telephone receiver passage are opened, and said earphone passage, loudspeaker channel are closed;
State Z3: said digital microphone passage, earphone passage are opened, and said telephone receiver passage, loudspeaker channel are closed;
State Z4: said digital microphone passage, loudspeaker channel are opened, and said telephone receiver, earphone tunnel are closed;
State Z5: said digital microphone passage, telephone receiver passage, loudspeaker channel are closed, and said earphone passage is opened;
State Z6: said digital microphone passage, telephone receiver passage, earphone pathway closure, said loudspeaker channel is opened.
Preferably, mobile device of the present invention also comprises music system, key system; Under the control of the audio file of said music system according to central processor CPU, be converted into the I2S signal, pass to first audio decoder and second audio decoder simultaneously via digital signal processor DSP; Judge through central processor CPU this audio frequency should in which terminal device output; Open this equipment path then, displaying audio file, said key system triggers the switching between the said mobile device status.
The present invention has following beneficial effect:
1, uses two audio decoders, thereby make mobile device can have better tonequality, audios such as audio equalizer, supper bass arbitrarily are set when listening to the music, bring better user experience, can take into account terminal devices such as microphone, telephone receiver again.
The normal smooth and easy best tonequality that obtains can make displaying audio file again time of sound when 2, the present invention can guarantee voice call.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is a system construction drawing of the present invention.
Fig. 2 is the system construction drawing of mobile device of the present invention.
Fig. 3 is the switching figure between the mobile device status of the present invention.
Embodiment
Referring to Fig. 1-shown in Figure 2; The present invention provides a kind of many demoders audio system; Comprise central processor CPU 1, digital signal processor DSP 2, modulator-demodular unit 3; Said central processor CPU 1, modulation regulator 3 are connected in digital signal processor DSP 2, also comprise at least one audio decoder.Audio decoder number of the present invention is 2; I.e. first audio decoder 4 and second audio decoder 5; Wherein, Said first audio decoder 4 is the audio decoder of processed voice conversation, and said second audio decoder 5 is for handling the audio decoder that multimedia audio is play, and the two links to each other with digital signal processor DSP 2 respectively.And said first audio decoder 4 also links to each other with digital microphone 6, telephone receiver 7, and said second audio decoder 5 also links to each other with earphone 8, loudspeaker 9.
Concrete, the model of said first audio decoder 4 is 8200 serial audio decoders, the model of said second audio decoder 5 is Mobile Sounds 3 audio decoders.
Concrete, the audio decoder flow process according to above-mentioned many demoders audio system comprises following two signal processing flows altogether; Be the voice playing process: said audio file is under the control of central processor CPU 1; Be converted into the I2S signal via digital signal processor DSP 2, pass to first audio decoder 4 and second audio decoder 5 simultaneously, judge through central processor CPU 1 this audio frequency should in which terminal device output; Open this equipment path then, displaying audio file.Voice call process: the path of opening said telephone receiver 7 and microphone 8; Modulator-demodular unit 3 received pulse signals; 2 decodings pass to telephone receiver 7 through digital signal processor DSP after the processing; First audio decoder 4 receives the simulating signal that microphone 6 gets into simultaneously; Be converted into the I2S signal, do being converted into pulse signal by modulator-demodular unit 3 after the digital processing and sending through digital signal processor DSP 2.
Of the present invention another by the mobile device product that described many demoders audio system is formed, also comprise music system 10, key system 12, said mobile device comprises following 6 kinds of states:
State Z1: said digital microphone 6 passages, telephone receiver 7 passages, earphone 8 passages, loudspeaker 9 passages are all closed, and promptly mobile device is in and does not receive calls and the state of playing back music not.
State Z2: said digital microphone 6 passages, telephone receiver 7 passages are opened, said earphone 8 passages, loudspeaker 9 pathway closures, and promptly mobile device uses digital microphone 6 and telephone receiver 7 to receive calls.
State Z3: said digital microphone 6 passages, earphone 8 passages are opened, said telephone receiver 7 passages, loudspeaker 9 pathway closures, and promptly mobile device uses digital microphone 6 and earphone 8 to receive calls.
State Z4: said digital microphone 6 passages, loudspeaker 9 passages are opened, and said telephone receiver 7, earphone 8 tunnel are closed, and promptly mobile device uses digital microphone 6 and loudspeaker 9 to receive calls.
State Z5: said digital microphone 6 passages, telephone receiver 7 passages, loudspeaker 9 pathway closures, said earphone 8 passages are opened, and promptly mobile device uses earphone 8 to listen to music.
State Z6: said digital microphone 6 passages, telephone receiver 7 passages, earphone 8 pathway closures, said loudspeaker channel 9 is opened, and promptly mobile device uses loudspeaker 9 to listen to music.
Wherein, Under the control of the audio file of said music system 10 according to central processor CPU 1, be converted into the I2S signal, pass to first audio decoder 4 and second audio decoder 5 simultaneously via digital signal processor DSP 2; Judge through central processor CPU 1 this audio frequency should in which terminal device output; Open this equipment path then, displaying audio file, the switching that said key system 12 triggers between the said mobile device status.
Referring to shown in Figure 3, to the switching flow figure between the state Z6, how bright specifically below mobile device switches between each state mobile device of the present invention at state Z1.
When mobile device is in the Z1 state; Be that mobile device is in and does not receive calls and the state of playing back music not; At this moment, if any dialling in phone and when answering with key system 12, mobile device gets into Z2 duty (use digital microphone 6 and telephone receiver 7 receive calls); As with key system 12 playing back music the time; Detect and judge whether mobile device inserts earphone 8 and get into Z6 or Z5 state according to central processor CPU 1; Promptly there is the earphone of insertion 8 to get into Z5 state (using earphone 8 to listen to music), do not insert 8 on earphone and get into Z6 state (using loudspeaker 9 to listen to music).
When mobile device is in the Z2 duty; Promptly use digital microphone 6 and telephone receiver 7 to receive calls; Select whether to insert earphone 8 as required by the people who receives calls; As select to insert earphone 8, then mobile device gets into Z3 duty (using digital microphone 6 and earphone 8 to receive calls); As the personnel that receive calls do not insert earphone 8; Then mobile device is in Z2 duty (using digital microphone 6 and telephone receiver 7 to receive calls) always; Accomplish until conversation, the personnel that answer hang up the telephone through key system 12, and this moment, central processor CPU 1 detection judged whether music is arranged in the system; If any music; Then mobile device directly gets into Z6 duty (use loudspeaker 9 listen to music), plays like no music, and then mobile device gets into Z1 duty (mobile device is in and does not receive calls and the state of playing back music not).
, mobile device (use digital microphone 6 and earphone 8 to receive calls) when being in the Z3 duty; Mobile device receives calls according to this kind state, and as further opening hands-free on the key system 12 again, then mobile device gets into Z4 duty (using digital microphone 6 and loudspeaker 9 to receive calls); As extract earphone 8; Then mobile device gets into Z2 duty (using digital microphone 6 and telephone receiver 7 to receive calls) again, otherwise mobile device is in Z3 state (using digital microphone 6 and earphone 8 to receive calls) always, accomplishes until conversation; Hang up the telephone through key system 12; Central processor CPU 1 detected and whether judged in the system playing back music this moment, and if any music, then mobile device directly gets into Z5 duty (using earphone 8 to listen to music); As do not have music and play, then mobile device directly gets into Z1 duty (mobile device is in and does not receive calls and the state of playing back music not).
When mobile device is in the Z4 duty; Promptly use digital microphone 6 and loudspeaker 9 to receive calls; Hands-free as closing through key system 12, then mobile device gets into Z3 duty (using digital microphone 6 and earphone 8 to receive calls) again.
When mobile device is in the Z5 duty; Promptly use earphone 8 to listen to music; As extract earphone 8; Then mobile device gets into Z6 duty (using loudspeaker 9 to listen to music), and when dialling in if any phone, then mobile device gets into Z3 duty (using digital microphone 6 and earphone 8 to receive calls) again.
, mobile device (use loudspeaker 9 to listen to music) when being in the Z6 duty; As insert earphone 8; Then mobile device gets into Z5 duty (using earphone 8 to listen to music); When dialling in if any phone, then mobile device gets into Z2 duty (promptly using digital microphone 6 and telephone receiver 7 to receive calls) again.
The embodiment of the above is a preferred embodiments of the present invention, is not to limit practical implementation scope of the present invention with this, and scope of the present invention comprises and is not limited to this embodiment.All shapes according to the present invention, the equivalence variation that structure is done all comprise in protection scope of the present invention.
Claims (8)
1. demoder audio system more than a kind; Comprise central processor CPU (1), digital signal processor DSP (2), modulator-demodular unit (3); Said central processor CPU (1), modulation regulator (3) are connected in digital signal processor DSP (2), it is characterized in that: also comprise at least one audio decoder.
2. many demoders audio system according to claim 1; It is characterized in that: said audio decoder number is 2; Said first audio decoder (4) is the audio decoder of processed voice conversation; Said second audio decoder (5) is for handling the audio decoder that multimedia audio is play, and the two links to each other with digital signal processor DSP (2) respectively.
3. many demoders audio system according to claim 2 is characterized in that: said first audio decoder (4) also links to each other with digital microphone (6), telephone receiver (7), and said second audio decoder (5) also links to each other with earphone (8), loudspeaker (9).
4. many demoders audio system according to claim 3 is characterized in that: the model of said first audio decoder (4) is 8200 serial audio decoders, and the model of said second audio decoder (5) is Mobile Sounds 3 audio decoders.
5. the signal processing flow of many demoders audio system according to claim 4 is characterized in that comprising:
The voice playing process: said audio file is under the control of central processor CPU (1); Be converted into the I2S signal via digital signal processor DSP (2); Pass to first audio decoder (4) and second audio decoder (5) simultaneously; Judge that through central processor CPU (1) which terminal device this audio frequency should be exported at, open this equipment path, displaying audio file then.
Voice call process: the path of opening said telephone receiver (7) and microphone (8); Modulator-demodular unit (3) received pulse signal; Decoding passes to telephone receiver (7) through digital signal processor DSP (2) after the processing; First audio decoder (4) receives the simulating signal that microphone (6) gets into simultaneously; Be converted into the I2S signal, do being converted into pulse signal by modulator-demodular unit (3) after the digital processing and sending through digital signal processor DSP (2).
6. signal processing flow according to claim 5 is characterized in that: the process that said central processor CPU (1) is judged realizes through software.
7. mobile device that many demoders audio system according to claim 4 is formed is characterized in that said mobile device comprises following 6 kinds of states:
State Z1: said digital microphone (6) passage, telephone receiver (7) passage, earphone (8) passage, loudspeaker (9) passage are all closed;
State Z2: said digital microphone (6) passage, telephone receiver (7) passage are opened said earphone (8) passage, loudspeaker (9) pathway closure;
State Z3: said digital microphone (6) passage, earphone (8) passage are opened said telephone receiver (7) passage, loudspeaker (9) pathway closure;
State Z4: said digital microphone (6) passage, loudspeaker (9) passage are opened, and said telephone receiver (7), earphone (8) tunnel are closed;
State Z5: said digital microphone (6) passage, telephone receiver (7) passage, loudspeaker (9) pathway closure, said earphone (8) passage is opened;
State Z6: said digital microphone (6) passage, telephone receiver (7) passage, earphone (8) pathway closure, said loudspeaker channel (9) is opened.
8. mobile device according to claim 7; It is characterized in that: also comprise music system (10), key system (12); Under the control of audio file according to central processor CPU (1) of said music system (10), be converted into the I2S signal, pass to first audio decoder (4) and second audio decoder (5) simultaneously via digital signal processor DSP (2); Judge through central processor CPU (1) this audio frequency should in which terminal device output; Open this equipment path then, displaying audio file, said key system (12) trigger said mobile device and between state Z1 to Z6, switch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100579551A CN102629471A (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system, system signal flow and composed mobile equipment |
| PCT/CN2012/082126 WO2013131367A1 (en) | 2012-03-07 | 2012-09-27 | Multi-decoder audio system, system signal procedure, and formed mobile device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100579551A CN102629471A (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system, system signal flow and composed mobile equipment |
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| CN102629471A true CN102629471A (en) | 2012-08-08 |
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| CN2012100579551A Pending CN102629471A (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system, system signal flow and composed mobile equipment |
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| WO (1) | WO2013131367A1 (en) |
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| CN105959852A (en) * | 2016-06-15 | 2016-09-21 | 维沃移动通信有限公司 | Bluetooth headset |
| CN111128207A (en) * | 2019-12-31 | 2020-05-08 | 陕西烽火电子股份有限公司 | Self-listening and self-loop calling box and calling method thereof |
| CN111554312A (en) * | 2020-05-15 | 2020-08-18 | 西安万像电子科技有限公司 | Method, device and system for controlling audio coding type |
| CN111972928A (en) * | 2020-08-21 | 2020-11-24 | 浙江指云信息技术有限公司 | Sleep-aiding pillow with surrounding sound field and adjusting and controlling method thereof |
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Also Published As
| Publication number | Publication date |
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| WO2013131367A1 (en) | 2013-09-12 |
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Application publication date: 20120808 |