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Patent US7761290 - Flexible frequency and time partitioning in perceptual transform coding of audio - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn audio encoder/decoder performs band partitioning for vector quantization encoding of spectral holes and missing high frequencies that result from quantization when encoding at low bit rates. The encoder/decoder determines a band structure for spectral holes based on two threshold parameters: a minimum...http://www.google.com/patents/US7761290?utm_source=gb-gplus-sharePatent US7761290 - Flexible frequency and time partitioning in perceptual transform coding of audioAdvanced Patent SearchPublication numberUS7761290 B2Publication typeGrantApplication numberUS 11/764,134Publication dateJul 20, 2010Filing dateJun 15, 2007Priority dateJun 15, 2007Fee statusPaidAlso published asUS20080312759Publication number11764134, 764134, US 7761290 B2, US 7761290B2, US-B2-7761290, US7761290 B2, US7761290B2InventorsKazuhito Koishida, Sanjeev Mehrotra, Wei-ge ChenOriginal AssigneeMicrosoft CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (104), Non-Patent Citations (73), Referenced by (25), Classifications (7), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetFlexible frequency and time partitioning in perceptual transform coding of audio
The following Detailed Description concerns various audio encoding/decoding techniques and tools that provide a way to fill spectral �holes� and missing high frequencies that may result from quantization at low bit rates, as well as flexibly combine coding at different transform window sizes along with vector quantization.
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