G.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on the same technology is G.726.[1] G....
G.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on the same technology is G.726.[1] G....
PURPOSE:To decrease the deterioration in a characteristic even when an ADPCM CODEC is used to a system generated with a transmission line bit error by calculating a control signal used for the control of an amplitude control coefficient by the use of a signal at the outside of a loop ...
ACODEC进行解码播放时,每次调用HI_MPI_ADEC_SendStream将音频数据发往音频解码通道时,数据长度也必须是324字节(320字节的净荷数据+4字节海思音频数据头)。 在音频初始化配置完毕后... 支持通过 SYS模块的绑定接口,将一个AI 通道绑定到 AENC 通道,实现录音编码功能;也可以将一个ADEC 通道绑定到 AO 通道,实现解...
图1以方框图的形式说明包括有ADPCMCODEC(ADPCM编译码器)的CT-2电话手机。 图2以方框图的形式说明符合CCITT建议G.721或G.726的现有技术的ADPCM解码器功能方框图。 图3以方框图的形式说明根据本发明图1ADPCM解码器功能方框图。 图4以方框图的形式说明根据本发明优选实施例图1的AD-PCM译码器。
DATA SHEET O K I T E L E C O M M U N I C AT I O N S P R O D U CT S ML7029 Multi-Function ADPCM CODEC September 2000 I I ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––...
15、e "g726/g72x.h”typedef struct stateint Predictor;int StepIndex;int Step;int Sample1;int Sample2;int CoEff1;int CoEff2;int IDelta; state;typedef struct adpcmcodec Codec;buffer Data;int Channel; /IMA_QTint16_t* Buffer;state State2;g726_state G7262; adpcm;static const int IndexTa...
14、 Sample2;int CoEff1;int CoEff2;int IDelta; state;typedef struct adpcmcodec Codec;buffer Data;int Channel; /IMA_QTint16_t* Buffer;state State2;g726_state G7262; adpcm;static const int IndexTable16=(-1, -1, -1, -1,2, 4, 6, 8,-1, -1, -1, -1,2, 4, 6, 8,*/;sta...
公开/公告号: JP特許第3101118号(P3101118)B2 公开/公告日期: 20001023 申请(专利权)人: シャープ株式会社 发明人: 宮田 圭二 摘要: PURPOSE: To prevent the signal waveform after a decoding is performed from being an excessive amplitude signal waveform, in an ADPCM codec reception system.收...
PURPOSE:To decrease the deterioration in a characteristic even when an ADPCM CODEC is used to a system generated with a transmission line bit error by calculating a control signal used for the control of an amplitude control coefficient by the use of a signal at the outside of a loop includi...