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Description: 嵌入式开发中，语音编码G729的算法。
8 kbit_s CS-ACELP语音编码算法-Embedded development, speech coding algorithm G729. 8 kbit_s CS-ACELP speech coding algorithm
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Size: 108538 |
Author: wuhx |
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Description: ITU-T G.729语音压缩算法。
description:
Fixed-point description of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).
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Size: 112019 |
Author: kevin |
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Description: G.729 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for 24 and 40 kbit/s. G.726 also introduced a new 16 kbit/s rate. The four bit rates associated with G.726 are often referred to by the bit size of a sample, which are 2-bits, 3-bits, 4-bits, and 5-bits respectively.
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Size: 977088 |
Author: chu |
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Description: 英文版G.729语音压缩标准。
GENERAL ASPECTS OF DIGITAL TRANSMISSION
SYSTEMS
CODING OF SPEECH AT 8 kbit/s
USING CONJUGATE-STRUCTURE
ALGEBRAIC-CODE-EXCITED
LINEAR-PREDICTION (CS-ACELP)
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Size: 278237 |
Author: guxiao |
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Description: 本程序的压缩编码是G.729的编解码程序，其的算法是基于CS-ACELP的算法基础上的编码。用在语音通信中，例如手机中-This program s arithmetic is base on ITU G.729 Speech Vocoder, which is a CS-ACELP compressing coder, usually use in speech comunication, such as mobile phone.
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Size: 1018107 |
Author: 朱敏 |
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Description: 本程序的压缩编码是G.729的编解码程序，其的算法是基于CS-ACELP的算法基础上的编码。用在语音通信中，例如手机中-This program s arithmetic is base on ITU G.729 Speech Vocoder, which is a CS-ACELP compressing coder, usually use in speech comunication, such as mobile phone.
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Size: 1017856 |
Author: 朱敏 |
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Description: 嵌入式开发中，语音编码G729的算法。
8 kbit_s CS-ACELP语音编码算法-Embedded development, speech coding algorithm G729. 8 kbit_s CS-ACELP speech coding algorithm
Platform: |
Size: 108544 |
Author: wuhx |
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Description: ITU-T G.729语音压缩算法。
description:
Fixed-point description of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).-ITU-T G.729 voice compression algorithms. description: Fixed-point description of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision (VAD), Discontinuous Transmission ( DTX), and Comfort Noise Generation (CNG).
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Size: 111616 |
Author: kevin |
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Description: G.729 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for 24 and 40 kbit/s. G.726 also introduced a new 16 kbit/s rate. The four bit rates associated with G.726 are often referred to by the bit size of a sample, which are 2-bits, 3-bits, 4-bits, and 5-bits respectively.
Platform: |
Size: 976896 |
Author: chu |
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Description: 英文版G.729语音压缩标准。
GENERAL ASPECTS OF DIGITAL TRANSMISSION
SYSTEMS
CODING OF SPEECH AT 8 kbit/s
USING CONJUGATE-STRUCTURE
ALGEBRAIC-CODE-EXCITED
LINEAR-PREDICTION (CS-ACELP)-The English version of G.729 voice compression standards. GENERAL ASPECTS OF DIGITAL TRANSMISSIONSYSTEMSCODING OF SPEECH AT 8 kbit/sUSING CONJUGATE-STRUCTUREALGEBRAIC-CODE-EXCITEDLINEAR-PREDICTION (CS-ACELP)
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Size: 277504 |
Author: guxiao |
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Description: 通信系统 ITU-T G.729 Annex -D 语音压缩标准附录D-Coding of speech at 8 kbit/s using Conjugate-
Structure Algebraic-Code-Excited Linear-Prediction
(CS-ACELP)Annex D: 6.4 kbit/s CS-ACELP speech coding algorithm ITU-T Recommendation G.729 – Annex D
(Previously CCITT Recommendation)
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Size: 46080 |
Author: yangsher |
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Description: 通信系统 ITU－T G.729 Annex －E 语音压缩标准附录 E-Coding of speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction(CS-ACELP)Annex E: 11.8 kbit/s CS-ACELP speech codingalgorithm
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Size: 108544 |
Author: yangsher |
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Description: Implementation of a speech codec based on coding of speech at 8 kbit/s
using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)
- We took .wav files that is sampled at 8000 Hz using 16-bit linear PCM. The encoding process is done every 10ms frame or 80 samples. For the preprocessing stage, the samples are high passed with cut-off frequency of 140 Hz and scaled down by 2. A total of 240 samples are buffer for windowing and autocorrelation computation. The autocorrelation coefficients are used to calculate the LP filter coefficients using the Levinson-Durbin algorithm. The LP filter coefficients are converted to Line Spectral Pair (LSP) coefficients. LSP coefficients are converted back to the LP filter coefficients, which is just the reverse process of the conversion from LP to LSP. This module is exactly what the decoder will need in order to convert the LSP coefficients to LP coefficients. We decided not to implement the LSF quantization module because we did not have the codebook information when we designed our system.
The open-loop pitch delay is calculated first for each frame. Then the closed-loop pitch
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Size: 40960 |
Author: coco |
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Description: ITU-T G.729 Source codeITU-T G.729 Annex B ANSI-C Source CodeVersion 1.4 Last modified: November, 2000 */TITLE-----Fixed-point description of Recommendation G.729 with ANNEX BCoding of Speech at 8 kbit/s using Conjugate-StructureAlgebraic-Code-Excited Linear-Prediction (CS-ACELP) withVoice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).SOFTWARE AND INTELLECTUAL PROPERTY----------------------------------This software package is provided as part of ITU-T Recommendation G.729B.Copyright (c) 1996, AT&T, France Telecom, Lucent Technologies, NTT, Rockwell International, Universite de Sherbrooke.All rights reserved.The copy of the source C code, version 1.4, is given under Copyright of the authors, only for the purpose of establishing the specification of a codec.VERSION-------This is version 1.4.-ITU-T G.729 Source codeITU-T G.729 Annex B ANSI-C Source CodeVersion 1.4 Last modified: November, 2000*/TITLE-----Fixed-point description of Recommendation G.729 with ANNEX BCoding of Speech at 8 kbit/s using Conjugate-StructureAlgebraic-Code-Excited Linear-Prediction (CS-ACELP) withVoice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).SOFTWARE AND INTELLECTUAL PROPERTY----------------------------------This software package is provided as part of ITU-T Recommendation G.729B.Copyright (c) 1996, AT&T, France Telecom, Lucent Technologies, NTT, Rockwell International, Universite de Sherbrooke.All rights reserved.The copy of the source C code, version 1.4, is given under Copyright of the authors, only for the purpose of establishing the specification of a codec.VERSION-------This is version 1.4.
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Size: 115712 |
Author: 丁一 |
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