KR970011726B1 - Audio encoder and decoder used for filter - Google Patents

Audio encoder and decoder used for filter Download PDF

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Publication number
KR970011726B1
KR970011726B1 KR94032217A KR19940032217A KR970011726B1 KR 970011726 B1 KR970011726 B1 KR 970011726B1 KR 94032217 A KR94032217 A KR 94032217A KR 19940032217 A KR19940032217 A KR 19940032217A KR 970011726 B1 KR970011726 B1 KR 970011726B1
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KR
South Korea
Prior art keywords
signal
audio signal
section
encoder
filter
Prior art date
Application number
KR94032217A
Other languages
Korean (ko)
Other versions
KR960020014A (en
Inventor
Hyung-Tae Cha
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to KR94032217A priority Critical patent/KR970011726B1/en
Publication of KR960020014A publication Critical patent/KR960020014A/en
Application granted granted Critical
Publication of KR970011726B1 publication Critical patent/KR970011726B1/en

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Classifications

    • 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
    • G10L19/0204—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 using subband decomposition
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/26—Pre-filtering or post-filtering

Landscapes

  • 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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

An encoder and decoder which analyzes characteristics of an audio signal by using a shape filter and performs a signal conversion base on the obtained analyzed information are disclosed. In the encoder, a shape division band section(1) analyzes an audio signal. A psychologic sound model section(4) receives the audio signal and sets a bit alloying signal in consideration of an auditory feature. A sampling and coding section(2) samples and encodes the audio signal according to the bit allotting signal. A frame forming section(3) adds an additive signal to a code signal and outputs a data frame.
KR94032217A 1994-11-30 1994-11-30 Audio encoder and decoder used for filter KR970011726B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94032217A KR970011726B1 (en) 1994-11-30 1994-11-30 Audio encoder and decoder used for filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94032217A KR970011726B1 (en) 1994-11-30 1994-11-30 Audio encoder and decoder used for filter

Publications (2)

Publication Number Publication Date
KR960020014A KR960020014A (en) 1996-06-17
KR970011726B1 true KR970011726B1 (en) 1997-07-14

Family

ID=19399852

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94032217A KR970011726B1 (en) 1994-11-30 1994-11-30 Audio encoder and decoder used for filter

Country Status (1)

Country Link
KR (1) KR970011726B1 (en)

Also Published As

Publication number Publication date
KR960020014A (en) 1996-06-17

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