Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Reexamination Certificate
2011-06-21
2011-06-21
Azad, Abul (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
C704S200100
Reexamination Certificate
active
07966191
ABSTRACT:
An audio encoder (109) has a hierarchical encoding structure and generates a data stream comprising one or more audio channels as well as parametric audio encoding data. The encoder (109) comprises an encoding structure processor (305) which inserts decoder tree structure data into the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic for an audio channel at a hierarchical layer of the hierarchical decoder structure and may specifically specify the decoder tree structures to be applied by a decoder. A decoder (115) comprises a receiver (401) which receives the data stream and a decoder structure processor (405) for generating the hierarchical decoder structure in response to the decoder tree structure data. A decode processor (403) then generates output audio channels from the data stream using the hierarchical decoder structure.
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Horich Holger
Hotho Gerard Herman
Kjorling Hans Magnus Kristofer
Purnhagen Heiko
Roden Karl Jonas
Azad Abul
Coding Technologies AB
Glenn Michael A.
Glenn Patent Group
Koninklijke Philips Electronics , N.V.
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