Audio coding

Data processing: speech signal processing – linguistics – language – Audio signal time compression or expansion

Reexamination Certificate

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Details

C704S500000, C704S501000, C704S502000, C704S504000

Reexamination Certificate

active

07840412

ABSTRACT:
An audio encoding scheme or a stream that encodes audio and video data is disclosed. The scheme has particular application in mezzanine-level coding in digital television broadcasting. The scheme has a mean effective audio frame length F that equals the video frame length 1/fVover an integral number M video frames, by provision of audio frames variable in length F in a defined sequence where length=F(j) at encoding. The length of the audio frames may be varied by altering the length of overlap between adjacent frames in accordance with an algorithm that repeats after a sequence of M frames. An encoder and a decoder for such a scheme are also disclosed.

REFERENCES:
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patent: 5930251 (1999-07-01), Murakami et al.
patent: 6124895 (2000-09-01), Fielder
patent: 6181383 (2001-01-01), Fox et al.
patent: 6188987 (2001-02-01), Fielder
patent: 6226608 (2001-05-01), Fielder et al.
patent: 6262777 (2001-07-01), Brewer et al.
patent: 6480234 (2002-11-01), Sasaki et al.
patent: 9832281 (1998-07-01), None
patent: 0249008 (2002-06-01), None

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