KR970017477A - Stereo digital audio coding device - Google Patents
Stereo digital audio coding device Download PDFInfo
- Publication number
- KR970017477A KR970017477A KR1019950032847A KR19950032847A KR970017477A KR 970017477 A KR970017477 A KR 970017477A KR 1019950032847 A KR1019950032847 A KR 1019950032847A KR 19950032847 A KR19950032847 A KR 19950032847A KR 970017477 A KR970017477 A KR 970017477A
- Authority
- KR
- South Korea
- Prior art keywords
- scale factor
- bit
- bit values
- header
- audio signals
- Prior art date
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- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
본 발명은 스테레오 오디오 신호를 부호화 하는 장치에 관한 것으로서, 소정 비트 단위의 비트 스트림으로 인가되는 좌 및 우측 오디오 신호를 최상위 비트로부터 서로 비교하여 상기 좌측 및 우측 오디오 신호의 비트 값들이 최상위 비트로부터 연속적으로 서로 동일한 값을 갖는 일련의 비트 값들만을 스캐일팩터로서 출력하는 스캐일팩터 검출부(1)와; 상기 스캐일팩터 검출부(1)로부터 검출된 상기 스캐일팩터들 및 상기 스캐일팩터에 해당되지 않는 상기 좌·우측 오디오 신호의 나머지 비트 값들을 순차적으로 출력하는 코드 발생 회로(2)와; 상기 스케일 팩터의 비트 수를 알리는 헤더를 생성하는 헤더 발생부(3)와; 상기 코드 발생 회로(2) 및 헤더 발생부(3)의 비트 값들을 합성하여 송신하는 합성부(4)클 구비한다.The present invention relates to an apparatus for encoding a stereo audio signal, wherein the left and right audio signals applied to a bit stream of a predetermined bit unit are compared with each other from the most significant bit, so that the bit values of the left and right audio signals are continuously from the most significant bit. A scale factor detection unit 1 for outputting only a series of bit values having the same value as each other as a scale factor; A code generation circuit (2) for sequentially outputting the scale factors detected from the scale factor detection unit (1) and the remaining bit values of the left and right audio signals not corresponding to the scale factor; A header generator (3) for generating a header for notifying the number of bits of the scale factor; And a combiner 4 for synthesizing and transmitting bit values of the code generator 2 and the header generator 3.
즉, 본 발명은 오디오 신호가 스테레오인 경우에 두 신호 사이에 상관 관계가 높음을 이용하여 각각의 샘플 포인트에서 두 신호간의 공통부분을 검색하여 스캐일 팩터로서 전송하고, 나머지 부분을 따로 전송하는 한편, 복호기에서 이용할 스캐일 팩터에 대한 헤더 정보를 이들 정보에 삽입하여 전송하는 것이다.That is, according to the present invention, when the audio signal is stereo, the correlation between the two signals is high, the common part between the two signals is searched at each sample point, transmitted as a scale factor, and the remaining parts are transmitted separately. The header information for the scale factor to be used in the decoder is inserted into these information and transmitted.
따라서, 본 발명은 매우 간단한 계산 과정으로 스테레오 오디오 신호의 손상이 없이 압축을 행할 수 있다는 효과가 있다.Therefore, the present invention has an effect that compression can be performed without damaging the stereo audio signal by a very simple calculation process.
선택도 : 첨부된 도면Selectivity: attached drawing
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 따른 스테레오 디지탈 오디오 부호화 장치의 블럭도.1 is a block diagram of a stereo digital audio encoding apparatus according to the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950032847A KR970017477A (en) | 1995-09-29 | 1995-09-29 | Stereo digital audio coding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950032847A KR970017477A (en) | 1995-09-29 | 1995-09-29 | Stereo digital audio coding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR970017477A true KR970017477A (en) | 1997-04-30 |
Family
ID=66616482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950032847A KR970017477A (en) | 1995-09-29 | 1995-09-29 | Stereo digital audio coding device |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970017477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100363551B1 (en) * | 2000-12-20 | 2002-12-05 | 에스케이 텔레콤주식회사 | Channel decorrelator and method for high-fidelity audio signal compression |
| KR100542129B1 (en) * | 2002-10-28 | 2006-01-11 | 한국전자통신연구원 | Object-based 3D Audio System and Its Control Method |
-
1995
- 1995-09-29 KR KR1019950032847A patent/KR970017477A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100363551B1 (en) * | 2000-12-20 | 2002-12-05 | 에스케이 텔레콤주식회사 | Channel decorrelator and method for high-fidelity audio signal compression |
| KR100542129B1 (en) * | 2002-10-28 | 2006-01-11 | 한국전자통신연구원 | Object-based 3D Audio System and Its Control Method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19950929 |
|
| PG1501 | Laying open of application | ||
| PC1203 | Withdrawal of no request for examination | ||
| WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |