CN105788601B - The shake hidden method and device of VoLTE - Google Patents
The shake hidden method and device of VoLTE Download PDFInfo
- Publication number
- CN105788601B CN105788601B CN201410837951.4A CN201410837951A CN105788601B CN 105788601 B CN105788601 B CN 105788601B CN 201410837951 A CN201410837951 A CN 201410837951A CN 105788601 B CN105788601 B CN 105788601B
- Authority
- CN
- China
- Prior art keywords
- frame
- signal
- speech frame
- volte
- pitch period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to the shake hidden methods and device of a kind of VoLTE.This method includes redundant frame padding, and the speech frame the following steps are included: input-buffer is grasped in redundant frame filling, determines that the signal in the speech frame is vowel state or non-vowel state；Generate and export the linear predictor coefficient of the speech frame；The pitch period of the signal of the speech frame is estimated, the pitch period of output estimation；Linear analysis is carried out to the speech frame according to the linear predictor coefficient and calculates residual signals；It is modified according to voice state to the residual signals and pitch period repeats, and generate residual signals after modification；By carrying out integrated filter to residual signals after modification, generates redundancy and be inserted into signal；And analysis is carried out to the pitch period according to the signal type and generates simultaneous voice data, the speech frame of caching is filled, voice data caused by being lacked of proper care with compensation due to word speed is insufficient.
Description
Technical field
The present invention relates to the speech processes in VoLTE, more particularly, to the shake hidden method and device of a kind of VoLTE.
Background technique
LTE (Long Term Evolution, long term evolution) is by 3GPP (The 3rd Generation
Partnership Project, third generation partner program) UMTS (the Universal Mobile that organizes to set up
Telecommunications System, Universal Mobile Communication System) technical standard long term evolution.VoLTE (voice on
It LTE) is end-to-end speech scheme of the framework on an LTE network under the conditions of full IP.Call mode in VoLTE uses IMS
(IP Multimedia Subsystem, IP multimedia subsystem) agreement.Packet switch (the Packet used due to IMS
Switch mode) is different using circuit switching (Circuit Switch) mode from traditional phone, and uses packet switch
Mode since unstable networks will lead to call, there are delay jitter phenomenons.
In order to fight the decline of voice quality caused by delay jitter, IMS devises a jitter cache manager
JBM (Jitter Buffer Mangement) is used to manage the delay jitter of network, and is hidden processing to delay jitter.
Fig. 1 shows the framework of the JBM under IMS agreement.Refering to what is shown in Fig. 1, JBM includes network analyser 11, adaptive logic controller
12, voice adaptive unit 13, Voice decoder 14 and buffer 15.JBM is transferred to after the RTP load for receiving network
Buffer 15 carries out storage and network analyser 11 carries out delay jitter analysis.Network analyser 11 shakes network delay
Analysis result sends adaptive logic controller 12 to.Adaptive logic controller 12 determines adaptive according to delay jitter information
The length condition of caching, and voice adaptive unit 13 is requested to do voice scaling (Scaling) processing, i.e. delay is trembled
It is dynamic to hide processing.Each frame data that Voice decoder 14 provides buffer 15 are decoded, then decoded every frame
PCM data is transferred to voice adaptive unit 13.Voice adaptive unit 13 is requested according to scaling to decoded PCM number
Processing is hidden according to delay jitter is carried out, and exports final voice data.
Voice adaptive unit 13 in JBM is mainly a delay jitter hidden method based on voice zoom technology:
Or redundant voice data are generated when voice data deficiency；Or voice data is reduced when voice data is excessive.This
Kind voice zoom technology can make when delay jitter occurs, and callee is not felt by the voice as caused by shake substantially
The loss of quality.
The hiding processing of voice delay jitter is similar with frame-losing hide processing, is estimated by the short-term stationarity of voice
The voice of redundancy or loss.The difference is that frame-losing hide processing is to carry out estimation reduction to the voice of loss, and voice is delayed
It is to estimate similar redundant voice when voice data deficiency and be filled that shake, which is hidden,；For in voice data mistake
When more, frame losing processing, i.e., so-called voice scaling processing are carried out to voice.
It is found that existing voice delay jitter concealing technology delay jitter hide processing when, due to be inserted into
Redundant frame be most likely not voice pitch period integral multiple, cause insertion data and original data it is asynchronous, from
And generate the sound of " click ".Fig. 2 shows the sound spectrographs of existing voice delay jitter concealing technology emulation, as shown in Fig. 2,
The processing that Voice extensible is carried out in box, due to the obvious abnormal vertical line of its asynchronous sound spectrograph of processing.This vertical line is exactly institute
" click " sound of meaning.
Summary of the invention
Technical problem to be solved by the invention is to provide the shake hidden methods and device of a kind of VoLTE, existing to improve
There is the souffle problem of voice delay jitter hidden method.
The present invention is to solve above-mentioned technical problem and the technical solution adopted is that propose that side is hidden in the shake of VoLTE a kind of
Method, including redundant frame padding, redundant frame filling grasp the speech frame the following steps are included: input-buffer, determine the voice
Signal in frame is vowel state or non-vowel state；Generate and export the linear predictor coefficient of the speech frame；To the speech frame
The pitch period of signal estimated, the pitch period of output estimation；Line is carried out to the speech frame according to the linear predictor coefficient
Property analysis meter calculate residual signals；It is modified according to voice state to the residual signals and pitch period repeats, and generate modification
Residual signals afterwards；By carrying out integrated filter to residual signals after modification, generates redundancy and be inserted into signal；And according to the class signal
Type carries out analysis to the pitch period and generates simultaneous voice data, is filled to the speech frame of caching, to compensate due to word speed
Voice data caused by lacking of proper care is insufficient.
In one embodiment of this invention, when signal type is vowel state, final needs is obtained according to synchronization length and are inserted
The estimation signal length entered, and filling voice is obtained according to the synchronization length calculated.
In one embodiment of this invention, when signal type is non-vowel state, frame fusion is carried out by cross-fading.
In one embodiment of this invention, the cross-fading is using quarter window for merging between frame and frame.
In one embodiment of this invention, the above method further includes frame deletion operation, comprising the following steps: receives and deletes frame
Request；Whether the frame, which is speech frame, is first determined whether to the frame deleted of needs, if not then carrying out deleting frame processing at once；If it is
Then without delete processing；Statistics is during frame processing is deleted in request, the frame number of continuous speech frame；And judge continuous speech frame
Whether more than a threshold value, counted if not continuous speech frame is then continued；If it is it carries out deleting frame processing.
It in one embodiment of this invention, is executed in the voice adaptive unit of jitter cache manager.
The present invention also proposes the shake concealing device of VoLTE a kind of, comprising: signal classifier, the speech frame of input-buffer,
Determine that signal in the speech frame is vowel state or non-vowel state, and output signal type；Linear prediction analysis unit, input
The speech frame generates and exports the linear predictor coefficient of the speech frame；Long-term prediction analytical unit inputs the speech frame, to this
The pitch period of the signal of speech frame estimated, the pitch period of output estimation；Analysis filter inputs the speech frame, and
The linear prediction analysis unit is connected, linear analysis is carried out to the speech frame according to the linear predictor coefficient and calculates residual error letter
Number；Residual modification unit connects the analysis filter, the signal classifier and the long-term prediction analytical unit, according to voice state
It modifies to the residual signals and pitch period repeats, and generate residual signals after modification；Synthesis filter connects the residual error
Unit and the linear prediction analysis unit are modified, by carrying out integrated filter to residual signals, redundancy is generated and is inserted into signal；And
Signal synchronizer connects the signal classifier, the long-term prediction analytical unit and the synthesis filter, according to the signal type pair
The pitch period carries out analysis and generates simultaneous voice data, is filled to the speech frame of caching, with compensation since word speed is lacked of proper care
Caused voice data is insufficient.
In one embodiment of this invention, when signal type is vowel state, which obtains according to synchronization length
The estimation signal length for finally needing to be inserted into is obtained, and filling voice is obtained according to the synchronization length calculated.
In one embodiment of this invention, when signal type is non-vowel state, frame fusion is carried out by cross-fading.
In one embodiment of this invention, the cross-fading is using quarter window for merging between frame and frame.
In one embodiment of this invention, it is incorporated in the voice adaptive unit of jitter cache manager.
The present invention hides processing by the delay jitter that pitch synchronous technology carries out, and can effectively improve based Variable Rate Speech
Handle frame boundaries problem.Compared with the existing technology, existing algorithm can largely be eliminated since fundamental tone is connected asynchronous
Caused by " click " sound.
Detailed description of the invention
For the above objects, features and advantages of the present invention can be clearer and more comprehensible, below in conjunction with attached drawing to tool of the invention
Body embodiment elaborates, in which:
Fig. 1 shows the framework of the JBM under IMS agreement.
Fig. 2 shows the sound spectrographs of existing voice delay jitter concealing technology emulation.
Fig. 3 shows the general frame of the delay jitter concealing device of one embodiment of the invention.
Fig. 4 shows the structural block diagram of the redundant frame fill part of the delay jitter concealing device of one embodiment of the invention.
Fig. 5 shows the redundant frame filling process of the delay jitter hidden method of one embodiment of the invention.
Fig. 6 shows the deletion frame process of the delay jitter hidden method of one embodiment of the invention.
Fig. 7 A shows no-delay shake hidden method processing sound spectrograph.
Fig. 7 B shows prior art delay jitter hidden method sound spectrograph.
Fig. 7 C shows the pitch synchronous technology hidden method sound spectrograph of the embodiment of the present invention.
Specific embodiment
Adaptive unit 13 in jitter cache manager JBM in the IMS agreement of Fig. 1 implements delay jitter and hides side
Method, main function are compensation output word speed imbalances as caused by adaptive cache, this essence is a voice speed adaption tune
Save device.
The embodiment of the present invention is improved for adaptive unit 13 shown in Fig. 1, proposes that a kind of delay jitter hides side
The characteristics of method and device, this method and apparatus first is that having carried out pitch synchronous processing.
Fig. 3 shows the general frame of the delay jitter concealing device of one embodiment of the invention.Refering to what is shown in Fig. 3, of the invention
The delay jitter concealing device of embodiment is related to buffer 31, state controller 32 and quadrature mirror filter (QMF) 33.Wherein
Buffer 31 divides for high band and low-frequency range two parts.State controller 32 (refers to Fig. 1 institute according to adaptive logic controller
Show) request, carry out delay jitter hide processing.The core operation of state controller 32 is inserted by pitch synchronous data
(Insert) and pitch synchronous data abandon operation (Discard), the height lacked of proper care to the word speed by quadrature mirror filter 33
Low-pass signal carries out rate adaptation.
Operation expansion description is abandoned to the insertion of pitch synchronous data and pitch synchronous data separately below.
Fig. 4 shows the structural block diagram of the redundant frame fill part of the delay jitter concealing device of one embodiment of the invention.Ginseng
It examines shown in Fig. 4, device includes signal classifier 41, linear prediction analysis unit 42, long-term prediction analytical unit 43, analysis filtering
Device 44, residual modification unit 45, synthesis filter 46 and signal synchronizer 47.
The speech frame of 41 input-buffer of signal classifier determines that signal in speech frame is vowel state or non-vowel state,
And output signal type.For example, vowel state is, for example, vowel, weak vowel etc., and non-vowel state is, for example, voiceless sound, plosive
Deng.The signal type of output is vowel state or non-vowel state.
Linear prediction analysis unit 42 also inputs speech frame, and generates the linear predictor coefficient A (z) to speech frame, then
Export these coefficients.
Long-term prediction analytical unit 43 also inputs speech frame, estimates the pitch period of the signal of speech frame, output
The pitch period T of estimationp。
Analysis filter 44 inputs the speech frame, and connects linear prediction analysis unit 42.44 basis of analysis filter
Linear predictor coefficient carries out linear analysis to speech frame, calculates residual signals e (n).
45 linking parsing filter 44 of residual modification unit, signal classifier 41 and long-term prediction analytical unit 43, residual error
Modification unit 45 is modified to the residual signals e (n) obtained from analysis filter 44 according to voice state and is repeated with pitch period,
And generate residual signals e ' (n) after modification.
Synthesis filter 46 connects residual modification unit 45 and linear prediction analysis unit 42, by carrying out to residual signals
Integrated filter generates redundancy insertion signal p ' (n).
47 connection signal classifier 41 of signal synchronizer, long-term prediction analytical unit 43 and synthesis filter 46, according to letter
Number type carries out analysis to pitch period and generates simultaneous voice data p (n), is filled to the speech frame of caching, with compensation by
The voice data caused by word speed is lacked of proper care is insufficient.
Above-mentioned process can be summarized as redundant frame filling process shown in fig. 5.As shown in figure 5, process the following steps are included:
Step 51, the speech frame of input-buffer determines that the signal in speech frame is vowel state or non-vowel state.
Step 52, generate and export the linear predictor coefficient of speech frame.
Step 53, the pitch period of the signal of speech frame is estimated, the pitch period T of output estimationp。
Step 54, linear analysis is carried out to speech frame according to linear predictor coefficient and calculates residual signals e (n).
Step 55, it is modified according to voice state to residual signals and pitch period repeats, and generate residual error letter after modification
Number e ' (n).
Step 56, by carrying out integrated filter to residual signals after modification, redundancy insertion signal p ' (n) is generated.
Step 57, analysis is carried out to the pitch period according to signal type and generates simultaneous voice data p (n), to caching
Speech frame is filled.
It is appreciated that foregoing schemes structure can both be implemented as shown in Figure 4, can also be implemented by other structures.
The present embodiment be added pitch synchronous redundant voice insertion mechanism, main function be prevent filling redundant frame by
Then non-integer pitch period length cause with after filling to be connected voice signal asynchronous, there is " click " sound.In Fig. 4
Shown in signal synchronizer 47 can according to signal type carry out different disposal, detailed description below.
It is that vowel state then carries out cycle synchronisation if it is the signal type that signal classifier 41 estimates；If it is non-vowel
State then carries out cross-fading.
When carrying out cycle synchronisation, the calculated pitch period T of long-term prediction analytical unit 43 is utilizedp, and calculate slotting
The synchronizing redundant signal length entered:
Syn_len=L+Tp- L%Tp
If it is vowel state, then the estimation signal length for finally needing to be inserted into is obtained according to synchronization length.According to calculating
The synchronization length come obtains filling voice:
P (n)=p ' (n), n=0,1 ... syn_len-1
If it is other states, then frame fusion is carried out by cross-fading.Cross-fading can using quarter window for frame with
It is merged between frame, the method is as follows:
N=0 ..., N-1
N is the length to forward lap, and general length is 80, TM1Start bit at the time of Chong Die with primitive sound for insertion voice
It sets, TM2For the position of original insertion voice.
In addition, the delay jitter hidden method of the embodiment of the present invention further includes deleting frame process.Pitch synchronous frame deletion phase
Relatively simple for pitch-synchronous frame insertion, complicated signal does not estimate operation, and the embodiment of the present invention uses asynchronous delete
Except method, the pitch synchronous of voice signal ensure that.Fig. 6 shows the deletion of the delay jitter hidden method of one embodiment of the invention
Frame process.Refering to what is shown in Fig. 6, its process is as follows:
In step 61, receives requested by the deletion frame that state controller is initiated first；
In step 62, the frame deleted needs first determines whether the frame is speech frame (i.e. SP=1), if not then standing
It enters step 65 quarter and deletes frame processing；If it is without delete processing, 63 are entered step；
In step 63, statistics is during frame processing is deleted in request, the frame number of continuous speech frame；
In step 64, continuous speech frame is judged whether more than a threshold value (such as 50 frames), if not then continuing to connect
Continuous speech frame statistics；If yes then enter step 65, carry out deleting frame processing.
The above embodiment of the present invention hides processing by the delay jitter that pitch synchronous technology carries out, and can effectively change
Frame boundaries problem is handled into based Variable Rate Speech.Compared with the existing technology, existing method can largely be eliminated due to base
" click " sound caused by sound linking is asynchronous.No-delay shake hidden method processing language spectrum is shown respectively in Fig. 7 A, 7B and 7C
The pitch synchronous technology hidden method language spectrum of figure, prior art delay jitter hidden method sound spectrograph and the embodiment of the present invention
Figure.Fig. 7 A does not carry out delay jitter and hides processing, and sound spectrograph has more apparent intensive horizontal stripe；Fig. 7 B is the processing knot of the prior art
Fruit also has some thin horizontal stripes although obvious without Fig. 7 A, on sound spectrograph；And Fig. 7 C is composed using the language of pitch synchronous technology
Figure can't see horizontal stripe substantially.
Although the present invention is described with reference to current specific embodiment, those of ordinary skill in the art
It should be appreciated that above embodiment is intended merely to illustrate the present invention, can also make in the case where no disengaging spirit of that invention
Various equivalent change or replacement out, therefore, as long as to the variation of above-described embodiment, change in spirit of the invention
Type will all be fallen in the range of following claims.
Claims (11)
1. the shake hidden method of VoLTE a kind of, including redundant frame padding, comprising the following steps:
The speech frame of input-buffer determines that the signal in the speech frame is vowel state or non-vowel state；
Generate and export the linear predictor coefficient of the speech frame；
The pitch period of the signal of the speech frame is estimated, the pitch period of output estimation；
Linear analysis is carried out to the speech frame according to the linear predictor coefficient and calculates residual signals；
It is modified according to voice state to the residual signals and pitch period repeats, and generate residual signals after modification；
By carrying out integrated filter to residual signals after modification, generates redundancy and be inserted into signal；And
Analysis is carried out to the pitch period according to the signal type and generates simultaneous voice data, the speech frame of caching is filled out
It fills, voice data caused by being lacked of proper care with compensation due to word speed is insufficient.
2. the shake hidden method of VoLTE as described in claim 1, which is characterized in that when signal type is vowel state, root
The estimation signal length for finally needing to be inserted into is obtained according to synchronization length, and filling language is obtained according to the synchronization length calculated
Sound.
3. the shake hidden method of VoLTE as described in claim 1, which is characterized in that when signal type is non-vowel state,
Frame fusion is carried out by cross-fading.
4. the shake hidden method of VoLTE as claimed in claim 3, which is characterized in that the cross-fading is used using quarter window
It is merged between frame and frame.
5. the shake hidden method of VoLTE as described in claim 1, which is characterized in that it further include frame deletion operation, including with
Lower step:
It receives and deletes frame request；
Whether the frame, which is speech frame, is first determined whether to the frame deleted of needs, if not then carrying out deleting frame processing at once；If it is
Then without delete processing；
Statistics is during frame processing is deleted in request, the frame number of continuous speech frame；And
Judge that continuous speech frame whether more than a threshold value, is counted if not continuous speech frame is then continued；If it is into
Row deletes frame processing.
6. the shake hidden method of VoLTE as described in claim 1, which is characterized in that be the language in jitter cache manager
It is executed in sound adaptive unit.
7. the shake concealing device of VoLTE a kind of, comprising:
Signal classifier, the speech frame of input-buffer determine that the signal in the speech frame is vowel state or non-vowel state, and defeated
Signal type out；
Linear prediction analysis unit inputs the speech frame, generates and export the linear predictor coefficient of the speech frame；
Long-term prediction analytical unit inputs the speech frame, estimates the pitch period of the signal of the speech frame, output estimation
Pitch period Tp；
Analysis filter inputs the speech frame, and connects the linear prediction analysis unit, according to the linear predictor coefficient to the language
Sound frame carries out linear analysis and calculates residual signals；
Residual modification unit connects the analysis filter, the signal classifier and the long-term prediction analytical unit, according to voice state
It modifies to the residual signals and pitch period repeats, and generate residual signals after modification；
Synthesis filter connects the residual modification unit and the linear prediction analysis unit, by integrating to residual signals
Filtering generates redundancy and is inserted into signal；And
Signal synchronizer connects the signal classifier, the long-term prediction analytical unit and the synthesis filter, according to the class signal
Type carries out analysis to the pitch period and generates simultaneous voice data, is filled to the speech frame of caching, to compensate due to word speed
Voice data caused by lacking of proper care is insufficient.
8. the shake concealing device of VoLTE as claimed in claim 7, which is characterized in that, should when signal type is vowel state
Signal synchronizer obtains the estimation signal length for finally needing to be inserted into according to synchronization length, and according to the synchronization length calculated
Obtain filling voice.
9. the shake concealing device of VoLTE as claimed in claim 7, which is characterized in that when signal type is non-vowel state,
Frame fusion is carried out by cross-fading.
10. the shake concealing device of VoLTE as claimed in claim 9, which is characterized in that the cross-fading is used using quarter window
It is merged between frame and frame.
11. the shake concealing device of VoLTE as claimed in claim 7, which is characterized in that be incorporated in jitter cache manager
Voice adaptive unit in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837951.4A CN105788601B (en) | 2014-12-25 | 2014-12-25 | The shake hidden method and device of VoLTE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837951.4A CN105788601B (en) | 2014-12-25 | 2014-12-25 | The shake hidden method and device of VoLTE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105788601A CN105788601A (en) | 2016-07-20 |
| CN105788601B true CN105788601B (en) | 2019-08-30 |
Family
ID=56389141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410837951.4A Active CN105788601B (en) | 2014-12-25 | 2014-12-25 | The shake hidden method and device of VoLTE |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788601B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838894B (en) * | 2019-11-27 | 2023-09-26 | 腾讯科技（深圳）有限公司 | Speech processing method, device, computer readable storage medium and computer equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704003A (en) * | 1995-09-19 | 1997-12-30 | Lucent Technologies Inc. | RCELP coder |
| JP3439307B2 (en) * | 1996-09-17 | 2003-08-25 | Ｎｅｃエレクトロニクス株式会社 | Speech rate converter |
| JPH11311997A (en) * | 1998-04-28 | 1999-11-09 | Matsushita Electric Ind Co Ltd | Sound reproducing speed converting device and method therefor |
| JP2002077233A (en) * | 2000-08-25 | 2002-03-15 | Matsushita Electric Ind Co Ltd | Real-time information receiving apparatus |
| CN1186765C (en) * | 2002-12-19 | 2005-01-26 | 北京工业大学 | Method for encoding 2.3kb/s harmonic wave excidted linear prediction speech |
| JP3871657B2 (en) * | 2003-05-27 | 2007-01-24 | 株式会社東芝 | Spoken speed conversion device, method, and program thereof |
| JP4675692B2 (en) * | 2005-06-22 | 2011-04-27 | 富士通株式会社 | Speaking speed converter |
| US7983309B2 (en) * | 2007-01-19 | 2011-07-19 | Nokia Corporation | Buffering time determination |
| JP4999757B2 (en) * | 2008-03-31 | 2012-08-15 | 日本電信電話株式会社 | Speech analysis / synthesis apparatus, speech analysis / synthesis method, computer program, and recording medium |
| JP2011170261A (en) * | 2010-02-22 | 2011-09-01 | Oki Electric Industry Co Ltd | Speech enhancing device, speech enhancing program |
| CN104751851B (en) * | 2013-12-30 | 2018-04-27 | 联芯科技有限公司 | It is a kind of based on the front and rear frame losing error concealment method and system to Combined estimator |
| CN105741843B (en) * | 2014-12-10 | 2019-09-20 | 辰芯科技有限公司 | A kind of lost packet compensation method and system based on delay jitter |
-
2014
- 2014-12-25 CN CN201410837951.4A patent/CN105788601B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105788601A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1243090B1 (en) | Method and arrangement in a communication system | |
| Liang et al. | Adaptive playout scheduling using time-scale modification in packet voice communications | |
| CA2331228C (en) | Packet loss compensation method using injection of spectrally shaped noise | |
| US7246057B1 (en) | System for handling variations in the reception of a speech signal consisting of packets | |
| US7457282B2 (en) | Method and apparatus providing smooth adaptive management of packets containing time-ordered content at a receiving terminal | |
| RU2507707C2 (en) | Method and apparatus for controlling video and audio data reproduction | |
| KR20040105869A (en) | Apparatus and method for synchronization of audio and video streams | |
| US20050243846A1 (en) | Method and apparatus providing continuous adaptive control of voice packet buffer at receiver terminal | |
| CN106507217B (en) | The treating method and apparatus of the timestamp of video flowing | |
| PT2200024E (en) | Method and apparatus for an adaptive de-jitter buffer | |
| US20090190614A1 (en) | Jitter buffer adaptation based on audio content | |
| WO2017084545A1 (en) | Method and system for voice packet loss concealment | |
| EP4002731A1 (en) | Voice processing method and apparatus, computer-readable storage medium and computer device | |
| JP2007511939A5 (en) | ||
| TW200849842A (en) | Method of regulating the transmission jitter within a reception terminal | |
| KR20120013431A (en) | Method and device for clipping control | |
| WO2017059678A1 (en) | Real-time voice receiving device and delay reduction method in real-time voice call | |
| JP2004274572A (en) | Control method and control device of jitter buffer | |
| CN109495660A (en) | A kind of coding method of audio data, device, equipment and storage medium | |
| CN105788601B (en) | The shake hidden method and device of VoLTE | |
| JP4751245B2 (en) | Audio transmission apparatus and audio transmission method | |
| US20040098267A1 (en) | Coding device, decoding device, and methods thereof | |
| CN105959304A (en) | Frame rate adjustment method and device | |
| CN109450585A (en) | Low time delay GMP mapping method and system based on state machine self adaptive control | |
| JP5074749B2 (en) | Voice signal receiving apparatus, voice packet loss compensation method used therefor, program for implementing the method, and recording medium recording the program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20160720 Assignee: Shanghai Li Ke Semiconductor Technology Co., Ltd. Assignor: Leadcore Technology Co., Ltd. Contract record no.: 2018990000159 Denomination of invention: VoLTE jittering concealing method and apparatus License type: Common License Record date: 20180615 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |