KR960035560A - Real time audio signal compression device - Google Patents

Real time audio signal compression device Download PDF

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Publication number
KR960035560A
KR960035560A KR1019950006887A KR19950006887A KR960035560A KR 960035560 A KR960035560 A KR 960035560A KR 1019950006887 A KR1019950006887 A KR 1019950006887A KR 19950006887 A KR19950006887 A KR 19950006887A KR 960035560 A KR960035560 A KR 960035560A
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KR
South Korea
Prior art keywords
data
fifo
real time
parallel
channel
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KR1019950006887A
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Korean (ko)
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KR100207635B1 (en
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이강희
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김광호
삼성전자 주식회사
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Priority to KR1019950006887A priority Critical patent/KR100207635B1/en
Publication of KR960035560A publication Critical patent/KR960035560A/en
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Publication of KR100207635B1 publication Critical patent/KR100207635B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

본 발명은 실시간 오디오 신호 압축 장치에 관한 것으로, 특히 간단한 회로 구성에 의해 다채널의 디지탈 오디오 데이터를 실시간적으로 압축하는 장치에 관한 것이며, 종래의 하드웨어 구성으로 인한 제어 체계의 복잡함과 다채널 신호 압축에서의 비효율화를 개선하기 위하여 입출력을 담당하는 FIFO(First In First Out) 모듈과 데이터 입 ·출력 및 데이터 압축 프로세싱을 실시간 제어하는 제어 타이밍(Control Timing) 발생부 및 다채널 확장을 위한 채널 확장 모듈로 구성되어, 구현 방식이 간단하여 하드웨어량을 크게 줄일 수 있으며 그에 따라 비용 절감 효과도 얻을 수 있다. 또한 구조가 간단하므로 유지, 보수 및 신뢰성이 높으며 이로 인한 시스템의 소형화로 다른 시스템과의 접속이 용이하고 다 채널 확장시 집적도를 크게 높일 수 있는 이점이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real-time audio signal compression device, and more particularly, to a device for real-time compression of multi-channel digital audio data by a simple circuit configuration. FIFO (First In First Out) module for input / output, control timing generator for real-time control of data input / output and data compression processing and channel expansion module for multi-channel expansion to improve inefficiency In this case, the implementation method is simple, so the amount of hardware can be greatly reduced, and accordingly, the cost reduction can be achieved. In addition, since the structure is simple, the maintenance, maintenance and reliability is high, and the system is compact, thereby making it easy to connect with other systems and greatly increasing the integration density in multi-channel expansion.

Description

실시간 오디오 신호 압축 장치Real time audio signal compression device

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

제2도는 본 발명에 의한 실시간 오디오 신호 압축 장치의 전체블럭도.2 is an overall block diagram of a real-time audio signal compression apparatus according to the present invention.

Claims (3)

A/D 변환된 디지탈 오디오 데이터를 실시간적으로 압축하는 장치에 있어서, 상기 A/D 변환된 시리얼 오디오 데이터를 병렬 오디오 데이터로 변환하는 직렬-병렬 변환기; 상기 병렬 오디오 데이터를 디지탈 신호 처리기가 처리하는 일정량의 단위로 저장하였다가 공급하는 제1 FIFO기; 상기 제1 FIFO기에서 데이터를 읽어들여 신호 압축 알고리듬 구현을 실시간적으로 수행하는 디지탈 신호 처리부; 상기 디지탈 신호 처리부에서 압축 연산을 완료된 데이터를 읽어들여 일시 저장했다가 공급하는 제2 FIFO기; 상기 제1, 제2 FIFO기와 디지탈 신호 처리부의 데이터 라이트, 리이드 타이밍을 제어해서 프로세싱을 실시간적으로 할 수 있도록 하는 제어 신호를 발생하는 제어 타이밍 발생부; 상기 제어 타이밍 발생부에 의해 제2 FIFO기에서 출력된 병렬 데이터를 직렬 데이터로 변환하는 병렬-직렬 변환기로 포함하는 것을 특징으로 하는 실시간 오디오 신호 압축 장치.An apparatus for compressing A / D converted digital audio data in real time, comprising: a serial-to-parallel converter for converting the A / D converted serial audio data into parallel audio data; A first FIFO device for storing and supplying the parallel audio data in a predetermined amount of units processed by a digital signal processor; A digital signal processor configured to read data from the first FIFO and implement a signal compression algorithm in real time; A second FIFO device for reading, temporarily storing, and supplying data on which the compression operation is completed by the digital signal processor; A control timing generator for generating a control signal for controlling data write and read timing of the first and second FIFO units and the digital signal processor to enable processing in real time; And a parallel-to-serial converter for converting parallel data output from the second FIFO unit into serial data by the control timing generator. 제1항에 있어서, 제1, 제2 FIFO기는 데이터가 오버 플로우 내지 언더 플로우가 발생하지 않도록 인터럽트 신호를 일정 주기마다 발생시켜 그동안에 프로세싱을 완료하는 것을 특징으로 하는 실시간 오디오 신호 압축 장치.The real-time audio signal compression device of claim 1, wherein the first and second FIFO devices generate interrupt signals at regular intervals so that data does not overflow or underflow. 제1항에 있어서, 제어 타이밍 발생부는 다채널로 동작할 경우에 한채널 동작시 필요한 제어 타이밍 신호와 각 채널간의 입출력 및 프로세싱 타이밍의 동기를 맞추어 각 채널의 프로세싱을 독립적으로 동작할 수 있도록 한 것을 특징으로 하는 실시간 오디오 신호 압축 장치.The method of claim 1, wherein the control timing generator is configured to independently operate the processing of each channel by synchronizing the control timing signal required for one channel operation with the input / output and processing timing between each channel when operating in multiple channels. A real time audio signal compression device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950006887A 1995-03-29 1995-03-29 Device for the real time audio signal compression KR100207635B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950006887A KR100207635B1 (en) 1995-03-29 1995-03-29 Device for the real time audio signal compression

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Application Number Priority Date Filing Date Title
KR1019950006887A KR100207635B1 (en) 1995-03-29 1995-03-29 Device for the real time audio signal compression

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KR960035560A true KR960035560A (en) 1996-10-24
KR100207635B1 KR100207635B1 (en) 1999-07-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100604163B1 (en) * 1997-05-05 2007-07-09 워너 뮤직 그룹 인크. Synchronizing audio signal samples taken at different smapling pates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100604163B1 (en) * 1997-05-05 2007-07-09 워너 뮤직 그룹 인크. Synchronizing audio signal samples taken at different smapling pates

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