KR970055606A - Bit allocation method of digital audio encoder and apparatus therefor - Google Patents
Bit allocation method of digital audio encoder and apparatus therefor Download PDFInfo
- Publication number
- KR970055606A KR970055606A KR1019950050560A KR19950050560A KR970055606A KR 970055606 A KR970055606 A KR 970055606A KR 1019950050560 A KR1019950050560 A KR 1019950050560A KR 19950050560 A KR19950050560 A KR 19950050560A KR 970055606 A KR970055606 A KR 970055606A
- Authority
- KR
- South Korea
- Prior art keywords
- bit allocation
- initial
- allocation information
- information
- digital audio
- Prior art date
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- 238000010586 diagram Methods 0.000 description 1
Classifications
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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
- 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
- G10L19/002—Dynamic bit allocation
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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
- 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
- G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/032—Quantisation or dequantisation of spectral components
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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)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
본 발명은 디지탈 오디오 부호화기의 비트 할당 방법 및 그 장치에관한 것으로 본 발명의 비트 할당 방법은 첫 프레임의 비트 할당 정보 계산시에서 “0”을 초기 비트 할당값으로 하여 비트 할당 정보를 계산을 하고 두번째 프레임부터는 이전 프레임의 비트 할당 정보를 초기 비트 할당값으로 하여 비트 할당 정보를 계산하는 한편, 본 발명의 비트 할당 장치는 비트 할당 정보를 계산을 위한 초기 비트 할당값을 입력하는 초기값입력부(10) 및 심리 음향 모델에서 입력된 신호 대 마스크 비 및 상기 초기값입력부(10)에서 입력된 초기 비트 할당값을 사용하여 비트 할당정보를 계산하여 출력하는 비트 할당부(20)를 포함하여 구성되어 비트 할당 정보 계산의 반복 회수를 줄일 수 있는 것이다.The present invention relates to a bit allocation method and apparatus of a digital audio encoder. In the bit allocation method of the present invention, bit allocation information is calculated using “0” as an initial bit allocation value when calculating bit allocation information of a first frame. From the frame, the bit allocation information is calculated using the bit allocation information of the previous frame as the initial bit allocation value, while the bit allocation apparatus of the present invention inputs an initial bit allocation value for calculating the bit allocation information. And a bit allocation unit 20 that calculates and outputs bit allocation information using the signal-to-mask ratio input from the psychoacoustic model and the initial bit allocation value input from the initial value input unit 10. It is possible to reduce the number of iterations of information calculation.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명에 따른 비트 할당 장치가 구비된 MPEG 오디오 부호화기의 블럭도이다.2 is a block diagram of an MPEG audio encoder equipped with a bit allocation device according to the present invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950050560A KR100204471B1 (en) | 1995-12-15 | 1995-12-15 | Bit divided method and apparatus of digital audio decoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950050560A KR100204471B1 (en) | 1995-12-15 | 1995-12-15 | Bit divided method and apparatus of digital audio decoder |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970055606A true KR970055606A (en) | 1997-07-31 |
KR100204471B1 KR100204471B1 (en) | 1999-06-15 |
Family
ID=19440521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950050560A KR100204471B1 (en) | 1995-12-15 | 1995-12-15 | Bit divided method and apparatus of digital audio decoder |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100204471B1 (en) |
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1995
- 1995-12-15 KR KR1019950050560A patent/KR100204471B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR100204471B1 (en) | 1999-06-15 |
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