CN101309317A - Audio processing apparatus of mobile terminal and method thereof - Google Patents
Audio processing apparatus of mobile terminal and method thereof Download PDFInfo
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- CN101309317A CN101309317A CNA2008100394949A CN200810039494A CN101309317A CN 101309317 A CN101309317 A CN 101309317A CN A2008100394949 A CNA2008100394949 A CN A2008100394949A CN 200810039494 A CN200810039494 A CN 200810039494A CN 101309317 A CN101309317 A CN 101309317A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a mobile terminal audio processing method and the device which aim to fulfill the requirements of low power consumption and high sound quality standard for the mobile terminal. The invention adds a special audio decoding chip to the mobile terminal basic structure in the prior art; different audio signals (MIDI, MP3 and WAV formats) are processed separately; when the audio decoding chip decodes, the MIDI audio outputted by the baseband integrated circuit is processed with bypass treatment, the audios with other formats inputted by the storage device are processed with decoding treatment; the state of the baseband integrated circuit is set to be in the sleep state; the output signal amplitude of the volume according to the different audio output devices; thereby, the power consumption is reduced and the requirement of longtime audio-playing is guaranteed; meanwhile, the audio-playing quality is improved; different requirements of the multimedia audio for the users are fulfilled; the multimedia audio is enabled to have the clear and fluent effects under different environments.
Description
Technical field
The present invention relates to the devices and methods therefor that a kind of audio frequency of mobile terminal is handled.
Background technology
Along with developing rapidly of the communication technology, mobile communication become gradually modern society the most in time, exchange way the most easily, the diversification of telecom terminal product becomes a kind of trend.When guaranteeing stable conversation, the user also begins multimedia audio-frequency unit is also more and more paid close attention to: also more and more higher to the audio requirement except requiring steady and audible tonequality, as: stereophonic effect; Require under the noisy environments that volume is enough big, tonequality is enough clear; Require under the stillness mode that back noise is as far as possible little, power consumption requires low as far as possible, tonequality to want clear and smooth equally, and the length of reproduction time has been had higher requirement.Existing technical scheme has just realized the basic function to all kinds of voice playing usually, it is not carried out the details optimization process, fail to take into account the different demand of user under the various conditions, simultaneously during the prior art audio plays, power consumption is generally bigger than normal, can not realize the demand that the long period plays.
Summary of the invention
The present invention is the defective that overcomes above-mentioned prior art, and a kind of devices and methods therefor of PHS/GSM mode mobile terminal voice playing is provided, and to satisfy the needs of long period voice playing, takes into account the requirement of user to voice playing quality and reproduction time.
Concrete technical scheme is as follows:
The device that a kind of audio frequency of mobile terminal is handled, by base band integrated circuit (IC) chip (BaseBand IntegratedCircuit, hereinafter to be referred as BBIC), audio frequency amplifier (is Power Amplifier, hereinafter to be referred as PA) form, it is characterized in that this device also comprises an audio decoder and a memory, audio decoder respectively and BBIC, audio frequency amplifier, memory is connected, the audio signal of audio decoder reception memorizer or sound BBIC output, and the audio signal from BBIC or memory done bypass or decoding processing respectively, to audio frequency amplifier, audio frequency amplifier outputs to output equipment after audio signal is amplified with the audio signal output after handling.
Wherein, described audio decoder possesses the function of bypass function and the common format audio stream of decoding.
The common form of described audio frequency is midi format or WAV form or MP3 format or AAC form or AACPLUS form etc.
Described memory is selected Nor type Flash (flash memory) for use.
When described audio frequency amplifier is stereo, operate as normal power consumption stream below the 150mw, cooperate portable terminal regular loudspeaker and the average type of output volume about 90db.
Described output equipment is loud speaker or earphone.
The method that a kind of audio frequency of mobile terminal is handled uses device as claimed in claim 1 to operate, and it is characterized in that, said method comprising the steps of:
1. mobile terminal playing audio frequency;
2. portable terminal judges whether from BBIC the audio signal of input: if continue next step; If not, that is: 4. audio signal goes to step from memory.
3. audio decoder is done the bypass processing to audio signal, and BBIC does not enter resting state, and 5. output go to step;
4. audio decoder is decoded to audio signal and is exported, and BBIC is set to resting state;
5. audio frequency amplifier amplifies, outputs to output equipment to the audio signal of input.
Wherein, described audio signal is midi format or WAV form or MP3 format or AAC form or AACPLUS form etc.
Described step 4. in, audio decoder is made corresponding adjustment according to 5. output equipment difference of step to amplitude output signal, promptly according to different output equipments, the output step-length difference of each grade volume correspondence, and the output signal amplitude difference of maximum level volume correspondence.
Described step is set to resting state in 4., refers to close BBIC relevant voltage and clock.
The invention provides the apparatus and method that a kind of audio frequency of mobile terminal is play, by adding special audio decoder chip, different audio signals is handled respectively, and base band integrated circuit (BaseBandIntegrated Circuit is set, hereinafter to be referred as BBIC) state, again in conjunction with the audio output apparatus difference, adjust the output signal amplitude of volume, thereby reduced power consumption, guarantee the needs of long period voice playing, improve the voice playing quality, make it under varying environment, can both reach the effect of clear and smooth.
Description of drawings
Fig. 1 is the hardware frame figure of the embodiment of the invention, comprises 1-base band integrated circuit (IC) chip, 2-audio frequency amplifier, 3-memory, 4-audio decoder, 5-loud speaker, 6-earphone.
Fig. 2 is the method flow diagram of the embodiment of the invention.
Embodiment
The hardware frame figure of the specific embodiment of the invention is as shown in Figure 1: this device is made up of base band integrated circuit (IC) chip 1, audio frequency amplifier 2, audio decoder 3, memory 4, loud speaker 5 and earphone 6.Base band integrated circuit (IC) chip 1 or memory 4 output audio signals are to audio decoder 3,3 pairs of audio decoders do from base band integrated circuit (IC) chip 1 that bypass is handled or to after making decoding processing from the audio signal of memory 4, audio signal after output is handled is to audio frequency amplifier 2, and 2 pairs of audio signals of audio frequency amplifier are amplified back output.Hardware circuit is when selector, need select suitable PA for use, be used for carrying out the amplification of audio signal: signal can not distortion (the sinusoidal wave voice signal with amplitude 2V is an example, guarantee the integrality of signal, and signal amplitude was the highest when volume was maximum can not surpass 2V) in the time of guaranteeing that volume is enough big; When volume was little, back noise was not clearly (signal to noise ratio is about 100db); To take into account power consumption (during operate as normal, the power consumption of PA is below 150mW) simultaneously, make the three reach ratio of greater inequality.In addition, PA front end multiplication factor also needs careful design, needs to consider with the audio decoder chip is collaborative.The audio decoder that the embodiment of the invention is selected for use is the WM8731L of Wolfson company, memory is the KAL5563CAM of Samsung, and PA is the SN4188 of SI-EN company, and PA front end multiplication factor is set to 6 times, through experiment test, such collocation can be satisfied the demand.
The method flow diagram of the specific embodiment of the invention may further comprise the steps as shown in Figure 2:
1. mobile terminal playing audio frequency;
2. portable terminal judges whether from base band integrated circuit (IC) chip 1 audio signal of input: if continue next step; If not, promptly 4. audio signal goes to step from memory 4;
3. 3 pairs of audio signals of audio decoder are done the bypass processing, that is: audio signal is not dealt with, and export, and go to step 6.;
4. 3 pairs of audio signals of audio decoder are decoded, and according to the difference of output equipment the output signal amplitude of each grade volume and the output signal amplitude of max volume correspondence are adjusted.When output equipment is under the situation of loud speaker, and the step-length that the output of each grade volume corresponding audio decoder is set is 4db, and the output signal amplitude of maximum level volume correspondence is 3.8V, and the wave volume of actual measurement is about 110db; When output equipment is under the situation of earphone, and the output step-length that each grade volume correspondence is set then will become 2db or 1db, and the output signal amplitude of maximum level volume correspondence is 1V.
5. BBIC is set to resting state;
6. audio frequency amplifier amplifies the audio signal of input, outputs to loud speaker or earphone.
With the PHS/GSM mode mobile terminal is that application of the present invention is an example: according to the difference of network condition, normal standby current is 7-8 milliampere.Audio plays under this pattern, treat that LCD screen enters sleep pattern after, the BBIC with GSM and PHS is made as standby mode respectively, this moment, BBIC did not decode to audio file, had only audio decoder and audio frequency power amplifier to be in mode of operation.According to the test result of reality, as the MP3 audio frequency playing, the standby current of this moment is about 50mA, and the battery capacity of supposing mobile phone is 1000mAh, so just can play MP3 continuously about 20 hours.If use BBIC decoding MP3, the electric current that records is about 100mA, and belongs to soft decoding, in operations such as response button, interrupts MP3 easily and plays.Use design of the present invention, reproduction time can be prolonged 1 times, play tonequality and also be greatly improved.
Only for the preferred embodiment of invention, be not to be used for limiting practical range of the present invention in sum.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (11)
1. the device handled of an audio frequency of mobile terminal, by base band integrated circuit (IC) chip (BaseBand IntegratedCircuit, hereinafter to be referred as BBIC) (1), audio frequency amplifier (2) is formed, it is characterized in that this device also comprises an audio decoder (3) and a memory (4), audio decoder (3) respectively and BBIC (1), audio frequency amplifier (2), memory (4) is connected, the audio signal of audio decoder (3) reception memorizer (4) or sound BBIC (1) output, and to doing bypass or decoding processing respectively from the audio signal of BBIC (1) or memory (4), to audio frequency amplifier (2), audio frequency amplifier (2) outputs to output equipment after audio signal is amplified with the audio signal output after handling.
2. the device that audio frequency of mobile terminal according to claim 1 is handled is characterized in that: audio decoder (3) possesses the function of bypass function and the common format audio stream of decoding.
3. the device that audio frequency of mobile terminal according to claim 2 is handled, it is characterized in that: the common form of described audio frequency is midi format or WAV form or MP3 format or AAC form or AACPLUS form etc.
4. the device that audio frequency of mobile terminal according to claim 1 is handled, it is characterized in that: memory (4) is selected Nor type Flash (flash memory) for use.
5. the device that audio frequency of mobile terminal according to claim 1 is handled is characterized in that: audio frequency amplifier (2) during for stereo, operate as normal power consumption stream below the 150mw, cooperate portable terminal regular loudspeaker and the average type of output volume about 90db.
6. the device of a kind of PHS/GSM mode mobile terminal Audio Processing according to claim 1 is characterized in that: output equipment is loud speaker (5) or earphone (6).
7. the method that audio frequency of mobile terminal is handled uses device as claimed in claim 1 to operate, and it is characterized in that, said method comprising the steps of:
1. mobile terminal playing audio frequency;
2. portable terminal judges whether from BBIC (1) the audio signal of input: if continue next step;
If not, that is: 4. audio signal goes to step from memory (4).
3. audio decoder (3) is done the bypass processing to audio signal, and BBIC does not enter resting state, and 5. output go to step;
4. audio decoder (3) is decoded to audio signal and is exported, and BBIC is set to resting state;
5. audio frequency amplifier (2) amplifies, outputs to output equipment to the audio signal of input.
8. the method that audio frequency of mobile terminal according to claim 7 is handled, it is characterized in that: described audio signal is midi format or WAV form or MP3 format or AAC form or AACPLUS form etc.
9. the method that audio frequency of mobile terminal according to claim 7 is handled, use device as claimed in claim 6 to operate, it is characterized in that: described step 4. in, audio decoder is made corresponding adjustment according to 5. output equipment difference of step to amplitude output signal.
10. the method that audio frequency of mobile terminal according to claim 9 is handled, it is characterized in that: audio decoder is made corresponding adjustment to amplitude output signal, be according to different output equipments, the output step-length difference of each grade volume correspondence, and the output signal amplitude difference of maximum level volume correspondence.
11. the device that audio frequency of mobile terminal according to claim 7 is handled is characterized in that: described step is set to resting state in 4., refers to close BBIC relevant voltage and clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100394949A CN101309317A (en) | 2008-06-25 | 2008-06-25 | Audio processing apparatus of mobile terminal and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100394949A CN101309317A (en) | 2008-06-25 | 2008-06-25 | Audio processing apparatus of mobile terminal and method thereof |
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| CN101309317A true CN101309317A (en) | 2008-11-19 |
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| CNA2008100394949A Pending CN101309317A (en) | 2008-06-25 | 2008-06-25 | Audio processing apparatus of mobile terminal and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166899A (en) * | 2019-06-06 | 2019-08-23 | 惠州市璧玉音响有限公司 | A kind of 5.1 sound channel wireless sound system of high-fidelity |
| CN111971977A (en) * | 2018-04-13 | 2020-11-20 | 三星电子株式会社 | Electronic device and method for processing stereo audio signal |
-
2008
- 2008-06-25 CN CNA2008100394949A patent/CN101309317A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971977A (en) * | 2018-04-13 | 2020-11-20 | 三星电子株式会社 | Electronic device and method for processing stereo audio signal |
| US11622198B2 (en) | 2018-04-13 | 2023-04-04 | Samsung Electronics Co., Ltd. | Electronic device, and method for processing stereo audio signal thereof |
| CN110166899A (en) * | 2019-06-06 | 2019-08-23 | 惠州市璧玉音响有限公司 | A kind of 5.1 sound channel wireless sound system of high-fidelity |
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Open date: 20081119 |