KR940008280A

KR940008280A - Encoding and Decoding Device of Speech Compression System

Info

Publication number: KR940008280A
Application number: KR1019920017637A
Authority: KR
Inventors: 이성용; 김흥국; 김대중
Original assignee: 정용문; 삼성전자 주식회사
Priority date: 1992-09-26
Filing date: 1992-09-26
Publication date: 1994-04-29

Abstract

본 발명은 64kbps의 8비트 PCM데이타를 32kbps의 4비트 ADPCM데이타로 부호화를 수행하는 동시에 이와 역으로의 동작과정을 수행하는 장치를 범용의 DSP코어를 이용하여 구현한다. 이를 위하여 DSP코어에 엔코더, 디코더 및 메모리를 구비한다. 그리고 DSP 코어의 메모리에는 픽스 포인트연산 32kbps ADPCM알고리즘을 내장시킨다. 따라서 수신되는 64kbps의 8비트 PCM데이타는 엔코더에서 부호화 알고리즘에 의해 32kbps의 4비트 ADPCM데이타로 압축 부호화하고, 디코더에서는 수신되는 32kbps의 4비트 ADPCM데이타는 역시 복호화 알고리즘에 의해 64kbps의 8비트 PCM데이타로 복호화 한다.The present invention implements an apparatus for performing encoding operation of 64 kbps 8 bit PCM data to 32 kbps 4 bit ADPCM data and vice versa using a general purpose DSP core. For this purpose, an encoder, decoder and memory are provided in the DSP core. The DSP core's memory incorporates a 32kbps ADPCM algorithm. Therefore, 8-bit PCM data of 64kbps received is compressed and encoded into 32-bit 4-bit ADPCM data by the encoding algorithm in the encoder, and 32-bit 4-bit ADPCM data received by the decoder is also converted into 8-bit PCM data of 64kbps by the decoding algorithm. Decrypt

Description

Encoding and Decoding Device of Speech Compression System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 음성 데이타를 압축 부호화 하는 흐름도.1 is a flowchart for compressing and encoding speech data.

제2도는 압축부호화한 음성 데이타를 부호화하는 흐름도.2 is a flowchart for encoding compressed coded speech data.

제3도는 본 발명을 수행하기 위한 음성 압축 시스템의 구성도.3 is a schematic diagram of a speech compression system for carrying out the present invention;

제4도는 제3도의 상세 구성도.4 is a detailed configuration diagram of FIG.

Claims

An encoding / decoding apparatus of a system for compressing speech data, comprising: PCM processing means for converting and outputting received analog speech signal into serial PCM data, and converting and outputting received serial PCM data into analog speech signal; A conversion means for converting and outputting received serial PCM data into parallel PCM data and converting and outputting parallel PCM data into serial PCM data, and a built-in fix point operation ASPCM algorithm, and compressing and decoding speech data. A means for controlling the; and an encoder means for receiving the parallel PCM data, converting and outputting the PCM data controlled and controlled by the coding program of the control means into ADPCM data, and receiving the ADPCM data, The ADPCM data controlled by the decoding program of the control means is received. Encoding and decoding apparatus of a speech compression system, characterized in that the decoder is configured as means for outputting the decoded data in PCM.

2. The encoder according to claim 1, wherein the encoder means receives 8-bit parallel PCM data of 64 kbps and compresses and encodes the 32-bit 4-bit parallel ADPCM data by the fix point operation 34 kbps ADPCM algorithm outputted from the control means. An apparatus for encoding and decoding a speech compression system.

The decoder according to claim 1 or 2, wherein the decoder means receives a 4-bit parallel PCM data of 32 kbps, and decodes into 64-bit 8-bit parallel PCM data by a fix point arithmetic ADPCM algorithm output from the control means. An encoding and decoding apparatus of a speech compression system, characterized in that.

※ Note: The disclosure is based on the initial application.