CA2303711A1 - Method for noise weighting filtering - Google Patents

Method for noise weighting filtering Download PDF

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Publication number
CA2303711A1
CA2303711A1 CA002303711A CA2303711A CA2303711A1 CA 2303711 A1 CA2303711 A1 CA 2303711A1 CA 002303711 A CA002303711 A CA 002303711A CA 2303711 A CA2303711 A CA 2303711A CA 2303711 A1 CA2303711 A1 CA 2303711A1
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CA
Canada
Prior art keywords
signal
subband signal
subband
multiplied
comprised
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002303711A
Other languages
French (fr)
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CA2303711C (en
Inventor
Yair Shoham
Casimir Wierzynski
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AT&T Inc
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Individual
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Publication date
Priority claimed from US08/367,526 external-priority patent/US5646961A/en
Application filed by Individual filed Critical Individual
Publication of CA2303711A1 publication Critical patent/CA2303711A1/en
Application granted granted Critical
Publication of CA2303711C publication Critical patent/CA2303711C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Noise Elimination (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The present invention relates to a method and system for noise weight filtering.
The method is comprised of the steps of receiving a signal comprising side information and an encoded signal, and decoding the encoded signal based on the side information and on a masking matrix. The step of decoding is comprised of the steps of separating the encoded signal into a set of n subband signal components, multiplying each subband signal component by a corresponding one of a set of n gain values to generate a corresponding one of a set of n multiplied subband signal components, the set of n gain values based on the masking matrix, and combining the n multiplied subband signal components to produce a decoded signal. The system is comprised of a receiver for receiving a signal comprising side information and an encoded signal, and a decoder for decoding the encoded signal based on the side information and on a masking matrix. The decoder is comprised of a unit for separating the encoded signal into a set of n subband signal components, a unit for multiplying each subband signal component by a corresponding one of a set of n gain values to generate a corresponding one of a set of n multiplied subband signal components, the set of n gain values based on the masking matrix, and a combiner for combining the n multiplied subband signal components to produce a decoded signal.
CA002303711A 1994-12-30 1995-12-15 Method for noise weighting filtering Expired - Fee Related CA2303711C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US367,526 1994-12-30
US08/367,526 US5646961A (en) 1994-12-30 1994-12-30 Method for noise weighting filtering
CA002165351A CA2165351C (en) 1994-12-30 1995-12-15 Method for noise weighting filtering

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002165351A Division CA2165351C (en) 1994-12-30 1995-12-15 Method for noise weighting filtering

Publications (2)

Publication Number Publication Date
CA2303711A1 true CA2303711A1 (en) 1996-07-01
CA2303711C CA2303711C (en) 2001-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002303711A Expired - Fee Related CA2303711C (en) 1994-12-30 1995-12-15 Method for noise weighting filtering

Country Status (1)

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CA (1) CA2303711C (en)

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Publication number Publication date
CA2303711C (en) 2001-03-27

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