GB2414646B - Optimal quantiser for an audio signal - Google Patents

Optimal quantiser for an audio signal

Info

Publication number
GB2414646B
GB2414646B GB0407392A GB0407392A GB2414646B GB 2414646 B GB2414646 B GB 2414646B GB 0407392 A GB0407392 A GB 0407392A GB 0407392 A GB0407392 A GB 0407392A GB 2414646 B GB2414646 B GB 2414646B
Authority
GB
United Kingdom
Prior art keywords
quantiser
optimal
audio signal
audio
signal
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.)
Expired - Lifetime
Application number
GB0407392A
Other versions
GB2414646A (en
GB0407392D0 (en
Inventor
Peter G Craven
Malcolm J Law
J Robert Stuart
Rhonda J Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MERIDIAN LOSSLESS PACKING Ltd
Original Assignee
MERIDIAN LOSSLESS PACKING 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 MERIDIAN LOSSLESS PACKING Ltd filed Critical MERIDIAN LOSSLESS PACKING Ltd
Priority to GB0407392A priority Critical patent/GB2414646B/en
Priority to GB0625079A priority patent/GB2433184B/en
Publication of GB0407392D0 publication Critical patent/GB0407392D0/en
Publication of GB2414646A publication Critical patent/GB2414646A/en
Application granted granted Critical
Publication of GB2414646B publication Critical patent/GB2414646B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB0407392A 2004-03-31 2004-03-31 Optimal quantiser for an audio signal Expired - Lifetime GB2414646B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0407392A GB2414646B (en) 2004-03-31 2004-03-31 Optimal quantiser for an audio signal
GB0625079A GB2433184B (en) 2004-03-31 2004-03-31 Optimal quantiser for an audio signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0407392A GB2414646B (en) 2004-03-31 2004-03-31 Optimal quantiser for an audio signal

Publications (3)

Publication Number Publication Date
GB0407392D0 GB0407392D0 (en) 2004-05-05
GB2414646A GB2414646A (en) 2005-11-30
GB2414646B true GB2414646B (en) 2007-05-02

Family

ID=32247656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0407392A Expired - Lifetime GB2414646B (en) 2004-03-31 2004-03-31 Optimal quantiser for an audio signal

Country Status (1)

Country Link
GB (1) GB2414646B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1821417B1 (en) 2006-02-15 2009-12-30 Sony Deutschland GmbH Method for classifying a signal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206884A (en) * 1990-10-25 1993-04-27 Comsat Transform domain quantization technique for adaptive predictive coding
EP0632597A2 (en) * 1993-06-29 1995-01-04 Sony Corporation Audio signal transmitting apparatus and the method thereof
US6275794B1 (en) * 1998-09-18 2001-08-14 Conexant Systems, Inc. System for detecting voice activity and background noise/silence in a speech signal using pitch and signal to noise ratio information
US6445801B1 (en) * 1997-11-21 2002-09-03 Sextant Avionique Method of frequency filtering applied to noise suppression in signals implementing a wiener filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206884A (en) * 1990-10-25 1993-04-27 Comsat Transform domain quantization technique for adaptive predictive coding
EP0632597A2 (en) * 1993-06-29 1995-01-04 Sony Corporation Audio signal transmitting apparatus and the method thereof
US6445801B1 (en) * 1997-11-21 2002-09-03 Sextant Avionique Method of frequency filtering applied to noise suppression in signals implementing a wiener filter
US6275794B1 (en) * 1998-09-18 2001-08-14 Conexant Systems, Inc. System for detecting voice activity and background noise/silence in a speech signal using pitch and signal to noise ratio information

Also Published As

Publication number Publication date
GB2414646A (en) 2005-11-30
GB0407392D0 (en) 2004-05-05

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130926 AND 20131002

PE20 Patent expired after termination of 20 years

Expiry date: 20240330