Method, apparatus, and medium for encoding and decoding of audio bitstreams and associated return channel information
AssigneesDolby Laboratories Licensing Corporation, Dolby International AB
InventorsRichard J. CARTWRIGHT, Kristofer KJORLING, Michael ECKERT
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Abstract
A method, performed by a device with one or more microphones, for generating an encoded bitstream, the method comprising, capturing, by the one or more microphones, one or more audio signals, analyzing the captured audio signals to determine presence of a wake word, upon detecting presence of a wake word, setting a flag to indicate a speech recognition task is to be performed on the captured audio signals, encoding the captured audio signals, assembling the encoded audio signals and the flag into the encoded bitstream.
Claims26
A method, performed by a device with one or more microphones, for generating an encoded bitstream, the method comprising:
- capturing, by the one or more microphones, one or more audio signals;
- analyzing the captured audio signals to determine presence of a wake word;
- upon detecting presence of a wake word:
- setting a flag to indicate a speech recognition task is to be performed on the captured audio signals:
- encoding the captured audio signals;
- assembling the encoded audio signals and the flag into the encoded bitstream.
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A method for decoding audio signal, comprising:
- receiving an encoded bitstream comprising encoded audio signals and a flag indicating whether a speech recognition task is to be performed;
- decoding the encoded audio signals to obtain decoded audio signals;
- and
- when the flag indicates that the speech recognition task is to be performed, performing the speech recognition task on the decoded audio signals.
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Dependencies are inferred from the claim text.