CN202737967U - Multi-decoder audio system and mobile equipment including the audio system - Google Patents
Multi-decoder audio system and mobile equipment including the audio system Download PDFInfo
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- CN202737967U CN202737967U CN201220082615.XU CN201220082615U CN202737967U CN 202737967 U CN202737967 U CN 202737967U CN 201220082615 U CN201220082615 U CN 201220082615U CN 202737967 U CN202737967 U CN 202737967U
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Abstract
The utility model relates to the technical field of decoder audio systems and specifically relates to a multi-decoder audio system. The multi-decoder audio system comprises a central processor unit CPU, a digital signal processor DSP and a modem. The central processor unit CPU and the modem are connected with the digital signal processor DSP. The multi-decoder audio system further comprises at least one audio decoder. The utility model also provides a piece of mobile equipment including the multi-decoder audio system. The audio decoding system and the mobile equipment including the system can ensure normal and smooth voices during a voice communication process and further enable best tone quality during an audio file playing process.
Description
Technical field
The utility model relates to decoder audio system technical field, the mobile device that is specifically related to a kind of many decoders audio system and is comprised of this system.
Background technology
In recent years mobile device development is swift and violent, especially smart mobile phone changes with each passing day, audio frequency, video, the technology of the decoders such as image is equally also in continuous renewal, wherein the Audiotechnica of smart mobile phone is also ripe gradually, audio codec in the mobile phone can send to such as earphone by accepting the I2S signal that DSP (digital signal processor) passes over and convert analog signal to, telephone receiver, the terminal equipment of loud speaker and so on is play the audio frequency of various forms, simultaneously also can accept to be converted into digital signal from input analog signals such as microphones stores, when audio frequency is play, the output that can switch different terminals by codec internal path switch is 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, suppress ambient 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 overall 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 processed, to reach the mobile terminal power low consumption, the high-level requirement of tonequality, by existing portable terminal basic framework is added special audio decoder chip, to different audio signals (MIDI, MP3, the forms such as WAV) process respectively, when the audio decoder chip is decoded, namely the MIDI audio frequency of base band integrated circuit output being made bypass processes, the extended formatting audio frequency of memory device input is done decoding to be processed, and when the audio decoder chip operation time, base band integrated circuit state is arranged to resting state, different in conjunction with audio output apparatus again, adjust the output signal amplitude of volume, thereby reduced power consumption, guarantee the needs that the long period audio frequency is play, improve simultaneously the audio frequency play quality, take into account the difference needs of user for multimedia audio, made it under varying environment, can both reach the effect of clear and smooth.
Just because of audio decoder will be taken into account various terminal equipments, solve the problems such as noise-reducing, elimination stereo echo, the size of IC also will remain in the relatively little scope simultaneously, therefore the usefulness of non-analog circuit just must be sacrificed to some extent, causes like this tonequality of audio system just can't to compare favourably with the tonequality of exclusive audio frequency message chip.
The utility model content
The technical problems to be solved in the utility model provides a kind ofly can take into account various terminal equipments, solves noise-reducing, eliminates many decoders audio system of stereo echo etc.
The utility model is achieved through the following technical solutions, a kind of many decoders audio system, comprise central processor CPU, digital signal processor DSP, modulator-demodulator, described central processor CPU, modulation adjuster are connected in digital signal processor DSP, also comprise at least one audio decoder.
Preferably, many decoders audio system of the present utility model, described audio decoder number is 2, described the first audio decoder is the audio decoder of processed voice conversation, the audio decoder that described the second audio decoder is play for processing multimedia audio, the two links to each other with digital signal processor DSP respectively.
Preferably, many decoders audio system of the present utility model, described the first audio decoder also links to each other with digital microphone, telephone receiver, and described the second audio decoder also links to each other with earphone, loud speaker.
Preferably, many decoders audio system of the present utility model, the model of described the first audio decoder are 8200 serial audio decoders, and the model of described the second audio decoder is Mobile Sounds 3 audio decoders.
The mobile device that the utility model also provides a kind of above-mentioned many decoders audio system to form comprises that also music system, key system the utlity model has following beneficial effect:
1, uses two audio decoders, thereby make mobile device can have better tonequality, the audios such as audio equalizer, supper bass arbitrarily are set when listening to the music, bring better user to experience, can take into account the terminal equipments 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 utility model can guarantee voice call.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is system construction drawing of the present utility model.
Fig. 2 is the system construction drawing of mobile device of the present utility model.
Fig. 3 is the switching figure between the mobile device status of the present utility model.
Embodiment
Referring to Fig. 1-shown in Figure 2, the utility model provides a kind of many decoders audio system, comprise central processor CPU 1, digital signal processor DSP 2, modulator-demodulator 3, described central processor CPU 1, modulation adjuster 3 are connected in digital signal processor DSP 2, also comprise at least one audio decoder.Audio decoder number of the present utility model is 2, i.e. the first audio decoder 4 and the second audio decoder 5, wherein, described the first audio decoder 4 is the audio decoder of processed voice conversation, the audio decoder that described the second audio decoder 5 is play for processing multimedia audio, the two links to each other with digital signal processor DSP 2 respectively.And described the first audio decoder 4 also links to each other with digital microphone 6, telephone receiver 7, and described the second audio decoder 5 also links to each other with earphone 8, loud speaker 9.
Concrete, the model of described the first audio decoder 4 is 8200 serial audio decoders, the model of described the second audio decoder 5 is Mobile Sounds 3 audio decoders.
Concrete, audio decoder flow process according to above-mentioned many decoders audio system, comprise altogether following two signal processing flows, be the audio frequency playing process: described 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 simultaneously the first audio decoder 4 and the second audio decoder 5, judge by central processor CPU 1 this audio frequency should in which terminal equipment output, then open this equipment path, displaying audio file.Voice call process: the path of opening described telephone receiver 7 and microphone 8; Modulator-demodulator 3 return pulse signals, 2 decodings pass to telephone receiver 7 through digital signal processor DSP after the processing, the first audio decoder 4 receives the analog signal that microphone 6 enters simultaneously, be converted into the I2S signal, do being converted into pulse signal by modulator-demodulator 3 after the digital processing and sending through digital signal processor DSP 2.
Of the present utility model another by the mobile device product that described many decoders audio system forms, also comprise music system 10, key system 12, described mobile device comprises following 6 kinds of states:
State Z1: described digital microphone 6 passages, telephone receiver 7 passages, earphone 8 passages, loud speaker 9 passages are all closed, and namely mobile device is in and does not receive calls and the state of music playing not.
State Z2: described digital microphone 6 passages, telephone receiver 7 passages are opened, described earphone 8 passages, loud speaker 9 pathway closures, and namely mobile device uses digital microphone 6 and telephone receiver 7 to receive calls.
State Z3: described digital microphone 6 passages, earphone 8 passages are opened, described telephone receiver 7 passages, loud speaker 9 pathway closures, and namely mobile device uses digital microphone 6 and earphone 8 to receive calls.
State Z4: described digital microphone 6 passages, loud speaker 9 passages are opened, described telephone receiver 7, earphone 8 passage pathway closures, and namely mobile device uses digital microphone 6 and loud speaker 9 to receive calls.
State Z5: described digital microphone 6 passages, telephone receiver 7 passages, loud speaker 9 pathway closures, described earphone 8 passages are opened, and namely mobile device uses earphone 8 to listen to music.
State Z6: described digital microphone 6 passages, telephone receiver 7 passages, earphone 8 pathway closures, described loudspeaker channel 9 is opened, and namely mobile device uses loud speaker 9 to listen to music.
Wherein, under the control of the audio file of described music system 10 according to central processor CPU 1, be converted into the I2S signal via digital signal processor DSP 2, pass to simultaneously the first audio decoder 4 and the second audio decoder 5, judge by central processor CPU 1 this audio frequency should in which terminal equipment output, then open this equipment path, displaying audio file, the switching that described key system 12 triggers between the described mobile device status.
Referring to shown in Figure 3, to the switching flow figure between the state Z6, how switch between each state by the below specifically bright mobile device at state Z1 for mobile device of the present utility model.
When mobile device is in the Z1 state, be that mobile device is in and does not receive calls and the state of music playing not, at this moment, if any dialling in phone and when answering with key system 12, mobile device enters Z2 operating state (use digital microphone 6 and telephone receiver 7 receive calls); During such as usefulness key system 12 music playing, detect and judge whether plugged earphone 8 enters Z6 or Z5 state to mobile device according to central processor CPU 1, namely have plugged earphone 8 to enter Z5 state (using earphone 8 to listen to music), 8 of plugged earphones do not enter Z6 state (using loud speaker 9 to listen to music).
When mobile device is in the Z2 operating state, namely use digital microphone 6 and telephone receiver 7 to receive calls, whether select as required plugged earphone 8 by the people who receives calls, as select plugged earphone 8, then mobile device enters Z3 operating state (using digital microphone 6 and earphone 8 to receive calls); As the personnel that receive calls plugged earphone 8 not, then mobile device is in Z2 operating state (using digital microphone 6 and telephone receiver 7 to receive calls) always, until conversation is finished, the personnel that answer hang up the telephone by key system 12, this moment, central processor CPU 1 detection judged whether music is arranged in the system, if any music, then mobile device directly enters Z6 operating state (using loud speaker 9 to listen to music), as playing without music, then mobile device enters Z1 operating state (mobile device is in and does not receive calls and the state of music playing not).
When being in the Z3 operating state, mobile device (use digital microphone 6 and earphone 8 to receive calls), mobile device receives calls according to this kind state, as further opening again hands-free on the key system 12, then mobile device enters Z4 operating state (using digital microphone 6 and loud speaker 9 to receive calls), as extract earphone 8, then mobile device reenters Z2 operating state (using digital microphone 6 and telephone receiver 7 to receive calls), otherwise mobile device is in Z3 state (using digital microphone 6 and earphone 8 to receive calls) always, until conversation is finished, hang up the telephone by key system 12, central processor CPU 1 detected and whether judged in the system music playing this moment, if any music, then mobile device directly enters Z5 operating state (using earphone 8 to listen to music), as playing without music, then mobile device directly enters Z1 operating state (mobile device is in and does not receive calls and the state of music playing not).
When mobile device is in the Z4 operating state, namely use digital microphone 6 and loud speaker 9 to receive calls, hands-free as closing by key system 12, then mobile device reenters Z3 operating state (using digital microphone 6 and earphone 8 to receive calls).
When mobile device is in the Z5 operating state, namely use earphone 8 to listen to music, as extract earphone 8, then mobile device enters Z6 operating state (using loud speaker 9 to listen to music), when dialling in if any phone, then mobile device reenters Z3 operating state (using digital microphone 6 and earphone 8 to receive calls).
When being in the Z6 operating state, mobile device (use loud speaker 9 to listen to music), such as plugged earphone 8, then mobile device enters Z5 operating state (using earphone 8 to listen to music), when dialling in if any phone, then mobile device reenters Z2 operating state (namely using digital microphone 6 and telephone receiver 7 to receive calls).
The embodiment of the above is preferred embodiments of the present utility model, is not to limit implementation scope of the present utility model with this, and scope of the present utility model comprises and is not limited to this embodiment.The equivalence variation that all shapes according to the utility model, structure are done all comprises in the protection range of the present utility model.
Claims (5)
1. decoder audio system more than a kind, comprise central processor CPU (1), digital signal processor DSP (2), modulator-demodulator (3), described central processor CPU (1), modulation adjuster (3) are connected in digital signal processor DSP (2), it is characterized in that: also comprise at least one audio decoder.
2. many decoders audio system according to claim 1, it is characterized in that: described audio decoder number is 2, described the first audio decoder (4) is the audio decoder of processed voice conversation, the audio decoder that described the second audio decoder (5) is play for processing multimedia audio, the two links to each other with digital signal processor DSP (2) respectively.
3. many decoders audio system according to claim 2, it is characterized in that: described the first audio decoder (4) also links to each other with digital microphone (6), telephone receiver (7), and described the second audio decoder (5) also links to each other with earphone (8), loud speaker (9).
4. many decoders audio system according to claim 3, it is characterized in that: the model of described the first audio decoder (4) is 8200 serial audio decoders, and the model of described the second audio decoder (5) is Mobile Sounds 3 audio decoders.
5. the mobile device that many decoders audio system according to claim 4 forms is characterized in that: also comprise music system (10), key system (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220082615.XU CN202737967U (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system and mobile equipment including the audio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220082615.XU CN202737967U (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system and mobile equipment including the audio system |
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| CN202737967U true CN202737967U (en) | 2013-02-13 |
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| CN201220082615.XU Expired - Fee Related CN202737967U (en) | 2012-03-07 | 2012-03-07 | Multi-decoder audio system and mobile equipment including the audio system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454644A (en) * | 2016-09-30 | 2017-02-22 | 北京小米移动软件有限公司 | Audio playing method and device |
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2012
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454644A (en) * | 2016-09-30 | 2017-02-22 | 北京小米移动软件有限公司 | Audio playing method and device |
| CN106454644B (en) * | 2016-09-30 | 2020-09-04 | 北京小米移动软件有限公司 | Audio playing method and device |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20190307 |