KR960039668A - Digital audio signal decoding device - Google Patents

Digital audio signal decoding device Download PDF

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Publication number
KR960039668A
KR960039668A KR1019950010364A KR19950010364A KR960039668A KR 960039668 A KR960039668 A KR 960039668A KR 1019950010364 A KR1019950010364 A KR 1019950010364A KR 19950010364 A KR19950010364 A KR 19950010364A KR 960039668 A KR960039668 A KR 960039668A
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KR
South Korea
Prior art keywords
digital audio
mpeg
decoding
decoder
audio signal
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KR1019950010364A
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Korean (ko)
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KR0162219B1 (en
Inventor
차형태
조재문
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김광호
삼성전자 주식회사
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Priority to KR1019950010364A priority Critical patent/KR0162219B1/en
Publication of KR960039668A publication Critical patent/KR960039668A/en
Application granted granted Critical
Publication of KR0162219B1 publication Critical patent/KR0162219B1/en

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    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
    • 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)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명은 디지탈 오디오신호의 복호화장치에 관한 것이다. 본 발명의 복호화장치는 입력되는 비트스트림중에서 불필요한 부분은 삭제하고, 필요한 부분만을 순차적으로 또는 군집으로 만들어 복호화기에서 요구하는 비트율과 동작주파수로 변환하여 출력하는 사전 분석기, 및 사전 분석기에서 변환된 신호를 청취 가능한 오디오신호로 복호화하는 디지털 오디오 복호화기로 구성된다. 따라서, 본 발명은 복호화기의 동작을 원활하게 해주며, 디지탈 오디오 복호화기가 MPEG 1칩으로 구성된 경우 MPEG 2의 비트스트림을 처리시 MPEG 1칩을 변형함없이 처리할 수 있는 효과를 제공한다.The present invention relates to an apparatus for decoding a digital audio signal. The decoding apparatus of the present invention deletes unnecessary portions of the input bitstream, sequentially or groups only necessary portions, and converts them into bit rates and operating frequencies required by the decoder, and outputs the converted signals from the pre-analyzer. And a digital audio decoder for decoding the audio signal into an audible audio signal. Accordingly, the present invention facilitates the operation of the decoder, and when the digital audio decoder is composed of MPEG 1 chips, it provides an effect of processing the MPEG 1 bit without modifying the MPEG 1 chip.

Description

디지탈 오디오신호의 복호화장치Digital audio signal decoding device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 의한 디지탈 오디오신호의 복호화장치를 나타내는 구성도, 제3도는 제2도의 장치에서 사전 분석기에 대한 동작을 설명하기 위한 개념도.FIG. 2 is a block diagram showing an apparatus for decoding digital audio signals according to the present invention, and FIG.

Claims (3)

압축된 오디오 비트스트림을 복호화하는 장치에 있어서, 압축된 오디오 비트스트림중에서 복호화에 불필요한 부분을 제거하고, 필요한 부분만을 디지탈 오디오 복호화기의 비트율과 동작주파수에 맞도록 변환하여 출력하는 사전 분석기 및 상기 사전 분석기에서 변환된 비트스트림을 복호화하여 청취 가능한 오디오신호를 출력하는 디지탈 오디오 복호화기를 포함하는 디지탈 오디오 복호화장치.An apparatus for decoding a compressed audio bitstream, comprising: a pre-analyzer and a dictionary that removes an unnecessary portion of a compressed audio bitstream and converts only a portion necessary for a bit rate and an operating frequency of a digital audio decoder. A digital audio decoder comprising a digital audio decoder for decoding a bit stream converted by the analyzer and outputting an audible audio signal. 제1항에 있어서, 상기 사전 분석기는 압축된 오디오 비트스트림에서 복호화에 필요한 부분을 일정한 크기로 분할하여 순차적 내지 군집형태로 출력하는 것을 특징으로 하는 디지탈 오디오 복호화장치.The digital audio decoding apparatus of claim 1, wherein the pre-analyzer divides a portion required for decoding in the compressed audio bitstream into a predetermined size and outputs the sequential or clustered form. 제1항에 있어서, 상기 사전 분석기는 상기 디지탈 오디오 복호화기가 MPEG 1칩으로 구성되고 입력되는 오디오 비트스트림이 MPEG 2의 압축방식에 따라 압축된 경우 압축된 오디오 비트스트림에서 MPEG 1칩이 인식하지 못하는 확장프레임부분을 제거하고 MPEG 1과의 호환부분을 MPEG 1칩의 비트율과 동작주파수에 맞도록 변환하여 출력하는 것을 특징으로 하는 디지탈 오디오 복호화장치.The MPEG-1 chip of claim 1, wherein the pre-analyzer cannot recognize the MPEG-1 chip in the compressed audio bitstream when the digital audio decoder is composed of MPEG-1 chips and the input audio bitstream is compressed according to the MPEG-2 compression scheme. A digital audio decoding apparatus characterized by removing the extended frame portion and converting the compatible portion with MPEG 1 to match the bit rate and operating frequency of the MPEG 1 chip. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019950010364A 1995-04-28 1995-04-28 Digital audio signal decoder KR0162219B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950010364A KR0162219B1 (en) 1995-04-28 1995-04-28 Digital audio signal decoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950010364A KR0162219B1 (en) 1995-04-28 1995-04-28 Digital audio signal decoder

Publications (2)

Publication Number Publication Date
KR960039668A true KR960039668A (en) 1996-11-25
KR0162219B1 KR0162219B1 (en) 1999-03-20

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KR1019950010364A KR0162219B1 (en) 1995-04-28 1995-04-28 Digital audio signal decoder

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8620011B2 (en) 2006-03-06 2013-12-31 Samsung Electronics Co., Ltd. Method, medium, and system synthesizing a stereo signal
US8885854B2 (en) 2006-08-09 2014-11-11 Samsung Electronics Co., Ltd. Method, medium, and system decoding compressed multi-channel signals into 2-channel binaural signals
US9369164B2 (en) 2006-01-11 2016-06-14 Samsung Electronics Co., Ltd. Method, medium, and system decoding and encoding a multi-channel signal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9369164B2 (en) 2006-01-11 2016-06-14 Samsung Electronics Co., Ltd. Method, medium, and system decoding and encoding a multi-channel signal
US9706325B2 (en) 2006-01-11 2017-07-11 Samsung Electronics Co., Ltd. Method, medium, and system decoding and encoding a multi-channel signal
US8620011B2 (en) 2006-03-06 2013-12-31 Samsung Electronics Co., Ltd. Method, medium, and system synthesizing a stereo signal
US9479871B2 (en) 2006-03-06 2016-10-25 Samsung Electronics Co., Ltd. Method, medium, and system synthesizing a stereo signal
US8885854B2 (en) 2006-08-09 2014-11-11 Samsung Electronics Co., Ltd. Method, medium, and system decoding compressed multi-channel signals into 2-channel binaural signals

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KR0162219B1 (en) 1999-03-20

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