CN104468991A - Mobile terminal and voice frequency receiving and sending method thereof - Google Patents
Mobile terminal and voice frequency receiving and sending method thereof Download PDFInfo
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- CN104468991A CN104468991A CN201410685520.0A CN201410685520A CN104468991A CN 104468991 A CN104468991 A CN 104468991A CN 201410685520 A CN201410685520 A CN 201410685520A CN 104468991 A CN104468991 A CN 104468991A
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Abstract
The invention relates to the technical field of mobile terminals, and provides a mobile terminal and a voice frequency receiving and sending method of the mobile terminal. The audio frequency sending method comprises the steps that voice is sampled through at least two sound channels to obtain at least two paths of voice frequency signals; time division multiplexing is carried out on the at least two paths of voice frequency signals on a time domain, and the two paths of voice frequency signals are combined into one path of voice frequency signal; the combined one path of voice frequency signal is encoded and packaged to obtain a voice packet, and the voice packet is sent to a target mobile terminal through a base station; the method for receiving the voice frequency comprises the steps of receiving the voice packet sent by the base station, decoding the voice packet to obtain the voice frequency signal; carrying out time division multiplexing on the voice frequency signal on a time domain to obtain at least two paths of voice frequency signals; playing the at least two paths of voice frequency signals through different voice channels; processing the voice frequency signals in a time division multiplexing manner, carrying out compatibility on original mobile phone voice communication channel, expanding the dimensional sound voice communication function, achieving stereophonic recording and playing, and better meeting the audio visual interactive experience of a user.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly relate to a kind of mobile terminal and audio frequency receiving/transmission method thereof.
Background technology
Along with the development of information-intensive society, user has had higher demand to the interactively experience of audiovisual, such as, sound channel in home audio from monophony to multichannel 2.1 until around 5.1 and 8.1, user is made to be appreciated effect preferably, but along with the development of mobile device and universal, under its acoustic pattern but slowly rests on monaural pattern, although there has been now the mobile terminal of some conceptual designs that the voice monophonic signal of call is expanded to multichannel by software process, but, voice transfer in these designs is also monophonic voices signal from base station communication channels, the requirement of user to audiovisual experience can not be met.In sum, exist in prior art because mobile terminal adopts monaural acoustic pattern to cause the problem of Consumer's Experience weak effect.
Summary of the invention
The object of the present invention is to provide a kind of mobile terminal and audio frequency receiving/transmission method thereof, being intended to solve for existing in prior art because mobile terminal adopts monaural acoustic pattern to cause the problem of Consumer's Experience weak effect.
The present invention is achieved in that a kind of audio frequency receiving/transmission method of mobile terminal, and described audio frequency receiving/transmission method comprises the following steps:
When mobile terminal sends audio frequency, by least two sound channels, external voice is sampled to obtain at least two-way audio signal;
Described at least two-way audio signal is carried out time division multiplexing in time domain and synthesizes a road audio signal;
Packing after a synthesized road coding audio signal is obtained voice packet, and described voice packet is sent to destination mobile terminal by base station;
When mobile terminal audio reception, receive the voice packet that base station sends, and obtain audio signal after described voice packet is decoded;
Solution time division multiplexing is carried out in time domain to obtain at least two-way audio signal to described audio signal;
Described at least two-way audio signal is play respectively by different sound channels.
In conjunction with first aspect, in the implementation that the first is possible, describedly described at least two-way audio signal is carried out time division multiplexing in time domain and the step of synthesizing a road audio signal is specially:
Described in switching according to time interval 1/N × X, the audio signal of at least two sound channel outputs is to synthesize a road audio signal, and wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described to described audio signal carry out in time domain separate time division multiplexing be specially with the step obtaining at least two-way audio signal:
Sample to obtain N frame voice data to described audio signal according to time interval 1/N × X, circulate successively and each frame voice data distributed to each sound channel, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
In conjunction with the first possible implementation of first aspect, in the implementation that the third is possible, describedly by least two sound channels, the step that sound samples to obtain at least two-way audio signal to be specially:
Each sound channel obtains a road audio signal;
Filtering process is carried out to each road audio signal.
In conjunction with the first possible implementation of first aspect, in the 4th kind of possible implementation, described the step that described at least two-way audio signal carries out playing respectively by different sound channels to be specially:
Each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
The present invention also provides a kind of mobile terminal, and described mobile terminal comprises:
Audio sample unit, for sampling to obtain at least two-way audio signal by least two sound channels to external voice;
Time-division multiplexing unit, for carrying out time division multiplexing by described at least two-way audio signal and synthesizing a road audio signal in time domain;
Coding unit, for packing after a synthesized road coding audio signal is obtained voice packet, and sends to destination mobile terminal by described voice packet by base station;
Described mobile terminal also comprises:
Decoding unit, for receiving the voice packet that base station sends, and obtains audio signal after decoding to described voice packet;
Separate time-division multiplexing unit, for carrying out solution time division multiplexing to described audio signal to obtain at least two-way audio signal in time domain;
Audio playing unit, for playing described at least two-way audio signal respectively by different sound channels.
In conjunction with first aspect, in the implementation that the first is possible, described at least two-way audio signal is carried out time division multiplexing and synthesizes a road audio signal being specially by described time-division multiplexing unit in time domain:
Described in switching according to time interval 1/N × X, the audio signal of at least two sound channel outputs is to synthesize a road audio signal, and wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described solution time-division multiplexing unit is carried out solution time division multiplexing to described audio signal and is specially to obtain at least two-way audio signal in time domain:
Sample to obtain N frame voice data to described audio signal according to time interval 1/N × X, circulate successively and each frame voice data distributed to each sound channel, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
In conjunction with the first possible implementation of first aspect, in the implementation that the third is possible, described audio sample unit is sampled to obtain at least two-way audio signal by least two sound channels to sound and is specially:
Each sound channel obtains a road audio signal;
Filtering process is carried out to each road audio signal.
In conjunction with the first possible implementation of first aspect, in the 4th kind of possible implementation, described at least two-way audio signal is carried out broadcasting respectively by different sound channels and is specially by described audio playing unit:
Each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
Mobile terminal provided by the invention and audio frequency receiving/transmission method thereof, time division multiplexing mode is adopted to process audio signal, compatible original mobile phone speech talk channel, expansion stereo language communication function, achieve stereophonic recording and broadcasting, better meet the audiovisual interactive experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the audio frequency sending method of a kind of mobile terminal that an embodiment of the present invention provides;
Fig. 2 is the flow chart of the audio interface receiving method of a kind of mobile terminal that an embodiment of the present invention provides;
Fig. 3 is the structural representation of the audio frequency dispensing device of a kind of mobile terminal that the another kind of embodiment of the present invention provides;
Fig. 4 is the structural representation of the audio frequency dispensing device of a kind of mobile terminal that the another kind of embodiment of the present invention provides;
Fig. 5 is that the signal of the audio frequency receiving/transmission method of a kind of mobile terminal that the another kind of embodiment of the present invention provides flows to schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In order to technical scheme of the present invention is described, be described below by specific embodiment.
An embodiment of the present invention provides a kind of audio frequency receiving/transmission method of mobile terminal, and as shown in Figure 1, audio frequency sending method comprises the following steps:
Step S101. samples to obtain at least two-way audio signal by least two sound channels to sound.
In the present embodiment, this step is specially: each sound channel obtains a road audio signal; Mike can be used to carry out stereo samples to sound, and the quantity of Mike is at least two, and such as diamylose gram can carry out dual track sampling preferably, and coplanar three Mikes can not carry out stereo samples preferably between two.
Further, after obtaining each road audio signal, then filtering process is carried out to each road audio signal.
Concrete, the audio signal that each sound channel is sampled is delivered to ADC and DSP and carry out signal optimizing filtering process, directly can also adopt the direct output digit signals of digital DMic, now can omit ADC.
In the present embodiment, mobile terminal can be arbitrary, can with the electronic installation of other devices communicatings, including, but not limited to the combination of PC, handheld device, electronic plane, personal digital assistant (PDA), mobile phone, network home appliance, camera, video camera, smart mobile phone, network base station, media player, navigator, electronic mail equipment, game station, automatic information system (entertainment systems such as with control panel) and aforementioned device.
Step S102. will at least carry out time division multiplexing and synthesize a road audio signal by two-way audio signal in time domain.
In the present embodiment, this step is specially: switch the audio signal of at least two sound channels outputs to synthesize a road audio signal according to time interval 1/N × X, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
Concrete, for dual track, it is X Hz that the audio volume control of each sound channel meets sample frequency, sample bits is Y bit, transmission bit rate is X × Y bps, sampling interval is 1/X s, by each road audio signal in time domain to the process of waveform time division multiplexing, is reduced to 1/ (2X) s the sampling interval of each sound channel, export the single channel waveform after synthesis, single channel waveform after treatment meets the phonetic matrix of mobile phone communication, sample frequency is X Hz, sample bits is Y bit, and transmission bit rate is X × Y bps, and the sampling interval is 1/X s.
Packing after one road coding audio signal of synthesis is obtained voice packet by step S103., and voice packet is sent to destination mobile terminal by base station.
As shown in Figure 2, audio interface receiving method comprises the following steps:
Step S104. receives the voice packet that base station sends, and obtains audio signal after decoding to voice packet.
Step S105. carries out solution time division multiplexing to obtain at least two-way audio signal to audio signal in time domain.
In the present embodiment, this step is specially: sample to obtain N frame voice data to audio signal according to time interval 1/N × X, circulates each frame voice data to distribute to each sound channel successively, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
For dual track, the single channel waveform of the audio signal obtained after decoding meets the phonetic matrix of mobile phone communication, and sample frequency is X Hz, and sample bits is Y bit, and transmission bit rate is X × Y bps, and the sampling interval is 1/X s; This audio signal resolved in time domain, for dual track call, with 1/X s for the sampling interval, strange frame distributes to the first sound channel, and even frame distributes to second sound channel; If for triple-track, wherein, the first frame distributes to the first sound channel, and the second frame distributes to second sound channel, and the 3rd frame distributes to triple-track, and the 4th frame distributes to the first sound channel, afterwards the like.
At least two-way audio signal is play respectively by different sound channels by step S106..
In the present embodiment, this step specifically comprises: each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
Such as, still for dual track, the audio signal of the first sound channel and second sound channel is carried out spread processing, delivers to DSP and DAC; Analog voice signal is after treatment delivered to many loudspeaker and carries out multichannel broadcasting.
The another kind of embodiment of the present invention also provides a kind of mobile terminal, and as shown in Figure 3 and Figure 4, mobile terminal comprises audio frequency dispensing device 21 and apparatus for receiving audio 22;
Audio frequency dispensing device 21 comprises:
Audio sample unit 201, samples to obtain at least two-way audio signal by least two sound channels to sound;
Time-division multiplexing unit 202, will at least carry out time division multiplexing and synthesize a road audio signal by two-way audio signal in time domain;
Coding unit 203, obtains voice packet by packing after a road coding audio signal of synthesis, and voice packet is sent to destination mobile terminal by base station;
Apparatus for receiving audio 22 comprises the following steps:
Decoding unit 204, receives the voice packet that base station sends, and obtains audio signal after decoding to voice packet;
Separate time-division multiplexing unit 205, solution time division multiplexing is carried out in time domain to obtain at least two-way audio signal to audio signal;
Audio playing unit 206, plays at least two-way audio signal respectively by different sound channels.
For audio sample unit 201, at least comprise microphone, the quantity of Mike is at least two.
For audio playing unit 206, at least comprise employing loud speaker, the quantity of loud speaker is at least two.
Time-division multiplexing unit 202 will at least carry out time division multiplexing and synthesize a road audio signal being specially by two-way audio signal in time domain:
Switch the audio signal of at least two sound channels outputs to synthesize a road audio signal according to time interval 1/N × X, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
Solution time-division multiplexing unit 205 pairs of audio signals are carried out solution time division multiplexing and are specially to obtain at least two-way audio signal in time domain:
Sample to obtain N frame voice data to audio signal according to time interval 1/N × X, circulate successively and each frame voice data distributed to each sound channel, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
Audio sample unit 201 is sampled to obtain at least two-way audio signal by least two sound channels to sound and is specially:
Each sound channel obtains a road audio signal;
Filtering process is carried out to each road audio signal.
Concrete, audio sample unit 201 also comprises ADC and DSP, to realize carrying out filtering process to each road audio signal.
At least two-way audio signal is carried out broadcasting respectively by different sound channels and is specially by audio playing unit 206:
Each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
Concrete, audio playing unit 206 also comprises ADC and DSP, to realize carrying out filtering process to each road audio signal.
Below again for dual track, as shown in Figure 5, the course of work of the present invention is described:
As follows for audio frequency process of transmitting: to use diamylose gram to carry out stereo samples to sound on mobile terminals, the audio signal that each sound channel is sampled is delivered to ADC and DSP and carries out Signal optimum processing; Wherein, it is X Hz that the audio signal waveform of each sound channel meets sample frequency, and sample bits is Y bit, and transmission bit rate is X × Y bps, and the sampling interval is 1/X s; Time domain carries out the process of shape time division multiplexing to audio signal ripple, is reduced to 1/ (2X) s the sampling interval of each sound channel, export the single channel waveform after synthesis; Single channel waveform after process meets the phonetic matrix of mobile phone communication, and wherein, sample frequency is X Hz, and sample bits is Y bit, and transmission bit rate is X × Y bps, and the sampling interval is 1/X s, is sent to base station by packing after speech signal coding via antenna for mobile phone.
As follows for audio frequency receiving course: voice packet is sent to destination mobile terminal by base station, mobile terminal is decoded to voice packet, decoded audio frequency single channel waveform meets the phonetic matrix of mobile phone communication, sample frequency is X Hz, sample bits is Y bit, transmission bit rate is X × Y bps, and the sampling interval is 1/X s; Audio signal is carried out the parsing in time domain, with 1/X s for the sampling interval, strange frame distributes to the first sound channel, even frame distributes to second sound channel, spread processing is carried out to the audio signal of the first sound channel and second sound channel, deliver to DSP and DAC, analog voice signal is after treatment delivered to double horn and carries out stereophony broadcasting.
The receiving/transmission method of mobile terminal provided by the invention and audio frequency thereof, time division multiplexing mode is adopted to process audio signal, compatible original mobile phone speech talk channel, expansion stereo language communication function, achieve stereophonic recording and broadcasting, better meet the audiovisual interactive experience of user.
Also do not solve the scheme of mobile phone communication stereo transmission from channel in currently available technology, the present invention is processed audio frequency by time division multiplexing mode, each sound channel signal takies different time intervals and identical frequency separation, remain the individual character of waveform, audio frequency process structure is simple, be easy to large-scale integrated, and the cross-talk between signal can not be produced.
The present invention can be used in the voice environments such as broadband voice call, narrowband speech call and landline telephone, especially for landline telephone, because the transmission tonequality of landline telephone is better, the technology improved its tonequality aspect is less, the present invention can be used on landline telephone, improve the tonequality of landline telephone further, the tonequality meeting user's requirements at the higher level is experienced.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (10)
1. an audio frequency receiving/transmission method for mobile terminal, is characterized in that, described audio frequency receiving/transmission method comprises the following steps:
When mobile terminal sends audio frequency, by least two sound channels, external voice is sampled to obtain at least two-way audio signal;
Described at least two-way audio signal is carried out time division multiplexing in time domain and synthesizes a road audio signal;
Packing after a synthesized road coding audio signal is obtained voice packet, and described voice packet is sent to destination mobile terminal by base station;
When mobile terminal audio reception, receive the voice packet that base station sends, and obtain audio signal after described voice packet is decoded;
Solution time division multiplexing is carried out in time domain to obtain at least two-way audio signal to described audio signal;
Described at least two-way audio signal is play respectively by different sound channels.
2. audio frequency receiving/transmission method as claimed in claim 1, is characterized in that, describedly described at least two-way audio signal is carried out time division multiplexing in time domain and the step of synthesizing a road audio signal is specially:
Described in switching according to time interval 1/N × X, the audio signal of at least two sound channel outputs is to synthesize a road audio signal, and wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
3. audio frequency receiving/transmission method as claimed in claim 2, is characterized in that, describedly in time domain, carries out separating time division multiplexing to described audio signal and is specially with the step obtaining at least two-way audio signal:
Sample to obtain N frame voice data to described audio signal according to time interval 1/N × X, circulate successively and each frame voice data distributed to each sound channel, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
4. audio frequency receiving/transmission method as claimed in claim 1, is characterized in that, is describedly specially the step that sound samples to obtain at least two-way audio signal by least two sound channels:
Each sound channel obtains a road audio signal;
Filtering process is carried out to each road audio signal.
5. audio frequency receiving/transmission method as claimed in claim 1, is characterized in that, describedly the step that described at least two-way audio signal carries out playing respectively by different sound channels is specially:
Each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
6. a mobile terminal, is characterized in that, described mobile terminal comprises:
Audio sample unit, for sampling to obtain at least two-way audio signal by least two sound channels to external voice;
Time-division multiplexing unit, for carrying out time division multiplexing by described at least two-way audio signal and synthesizing a road audio signal in time domain;
Coding unit, for packing after a synthesized road coding audio signal is obtained voice packet, and sends to destination mobile terminal by described voice packet by base station;
Described mobile terminal also comprises:
Decoding unit, for receiving the voice packet that base station sends, and obtains audio signal after decoding to described voice packet;
Separate time-division multiplexing unit, for carrying out solution time division multiplexing to described audio signal to obtain at least two-way audio signal in time domain;
Audio playing unit, for playing described at least two-way audio signal respectively by different sound channels.
7. mobile terminal as claimed in claim 6, it is characterized in that, described at least two-way audio signal is carried out time division multiplexing and synthesizes a road audio signal being specially by described time-division multiplexing unit in time domain:
Described in switching according to time interval 1/N × X, the audio signal of at least two sound channel outputs is to synthesize a road audio signal, and wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
8. mobile terminal as claimed in claim 7, it is characterized in that, described solution time-division multiplexing unit is carried out solution time division multiplexing to described audio signal and is specially to obtain at least two-way audio signal in time domain:
Sample to obtain N frame voice data to described audio signal according to time interval 1/N × X, circulate successively and each frame voice data distributed to each sound channel, wherein, X is the sample frequency of each sound channel, and N is the number of sound channel.
9. mobile terminal as claimed in claim 6, it is characterized in that, described audio sample unit is sampled to obtain at least two-way audio signal by least two sound channels to sound and is specially:
Each sound channel obtains a road audio signal;
Filtering process is carried out to each road audio signal.
10. mobile terminal as claimed in claim 6, it is characterized in that, described at least two-way audio signal is carried out broadcasting respectively by different sound channels and is specially by described audio playing unit:
Each road audio signal is carried out spread processing;
Audio signal after spread processing is carried out filtering process.
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Application publication date: 20150325 |