KR950024457A - Buffer Size Prediction Method for Digital Audio Coding and Decoding Equipment with Adaptive Coding and Decoding - Google Patents
Buffer Size Prediction Method for Digital Audio Coding and Decoding Equipment with Adaptive Coding and Decoding Download PDFInfo
- Publication number
- KR950024457A KR950024457A KR1019940000783A KR19940000783A KR950024457A KR 950024457 A KR950024457 A KR 950024457A KR 1019940000783 A KR1019940000783 A KR 1019940000783A KR 19940000783 A KR19940000783 A KR 19940000783A KR 950024457 A KR950024457 A KR 950024457A
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- South Korea
- Prior art keywords
- buffer
- frame
- decoding
- encoding
- buffer size
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract 5
- 230000003044 adaptive effect Effects 0.000 title abstract 3
- 238000005192 partition Methods 0.000 claims abstract 2
- 230000005236 sound signal Effects 0.000 claims abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
본 발명은 적응적 부호화 및 복호화 기능을 갖는 디지탈 오디오 부호화 및 복호화 장치의 버퍼 크기 예측 방법에 관한 것이다.The present invention relates to a buffer size prediction method of a digital audio encoding and decoding apparatus having an adaptive encoding and decoding function.
이러한 방법은 소정의 프레임 단위로 입력되는 오디오 신호를 적응적으로 부호화 하는 부호화와, 상기 부호화기에서 제공되는 비트 스트림을 기록하고 채널 정보량에 맞도록 전송하는 버퍼를 포함하는 부호화장치와, 채널을 통해 수신되는 비트 스트림을 기록하고 소정의 전송율로 출력하는 버퍼와, 상기 버퍼에서 제공되는 비트 스트림을 입력하여 적응적으로 복호화하는 복호화기를 포함하는 복호화 장치를 구비하는 적응적 디지탈 오디오 부호화 및 복호화 장치의 버퍼 크기 예측방법에 있어서, 상기 입력되는 프레임이 M(여기서 M은 양의정수)개로 구성된 1프레임군(GOF)인 경우, 평균 프레임 비트량(FB)으로 부터 다음 식과 같이 소정구간만큼 벗어나도록 할당하며,Such a method includes an encoding apparatus including an encoding for adaptively encoding an audio signal input in a predetermined frame unit, a buffer for recording a bit stream provided by the encoder and transmitting the same to a channel information amount, and receiving through a channel. Buffer size of an adaptive digital audio encoding and decoding apparatus comprising a decoder for recording a bit stream to be output and outputting at a predetermined transmission rate, and a decoder for adaptively decoding and inputting the bit stream provided from the buffer. In the prediction method, when the input frame is a one-frame group (GOF) consisting of M (where M is a positive integer), the frame is allocated so as to deviate from the average frame bit amount FB by a predetermined interval as in the following equation,
여기서, T는 버퍼 분할 갯수를 나타내고, F(i)는 i(여기서 i는 양의정수)번째 프레임의 비트 할당량을 나타내는 것으로 상기 M보다는 작거나 같은 수로 설정됨으로써 최적의 버퍼 크기를 예측하여 버퍼에 기록되는 데이타의 언더플로우 및 오버플로우 현상을 방지할 수 있도록 하였다.Here, T denotes the number of buffer partitions, and F (i) denotes the bit allocation amount of the i (where i is a positive integer) frame, which is set to a number less than or equal to M, thereby predicting an optimal buffer size to the buffer. Underflow and overflow of recorded data can be prevented.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 적용되는 통상적인 오디오 부호화 및 복호화 장치의 개략적인 블록도.1 is a schematic block diagram of a conventional audio encoding and decoding apparatus applied to the present invention.
제2도는 제 1도에 도시된 버퍼에 기록되거나 판독되는 포인터를 한 프레임군을 4프레임으로 설정하여 예시하는 그라프.FIG. 2 is a graph illustrating pointers written or read in the buffer shown in FIG. 1 by setting one frame group to four frames.
제3도는 본 발명의 가상 버퍼 검출기들의 상태 범위를 한 프레임군을 4프레임으로 설정하여 예시하는 도면.3 is a diagram illustrating the state range of the virtual buffer detectors of the present invention by setting one frame group to four frames.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940000783A KR960003456B1 (en) | 1994-01-18 | 1994-01-18 | Digital audio coder with adaptable coding/ decoding, and the foreseeing method of buffer size |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940000783A KR960003456B1 (en) | 1994-01-18 | 1994-01-18 | Digital audio coder with adaptable coding/ decoding, and the foreseeing method of buffer size |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950024457A true KR950024457A (en) | 1995-08-21 |
KR960003456B1 KR960003456B1 (en) | 1996-03-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019940000783A KR960003456B1 (en) | 1994-01-18 | 1994-01-18 | Digital audio coder with adaptable coding/ decoding, and the foreseeing method of buffer size |
Country Status (1)
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KR (1) | KR960003456B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101390192B1 (en) * | 2008-01-17 | 2014-04-29 | 삼성전자주식회사 | Transmission apparatus and receiving apparatus of video trasmission system, and buffer control method thereof |
-
1994
- 1994-01-18 KR KR1019940000783A patent/KR960003456B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101390192B1 (en) * | 2008-01-17 | 2014-04-29 | 삼성전자주식회사 | Transmission apparatus and receiving apparatus of video trasmission system, and buffer control method thereof |
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Publication number | Publication date |
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KR960003456B1 (en) | 1996-03-13 |
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