Adaptive variable bit rate audio encoding
AssigneeAkikase Technologies, LLC
InventorsCharles Benjamin Dieterich, Edmond Chalom, Tao Chen
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Abstract
A method and apparatus for producing a variable bit rate audio signal is disclosed. An audio signal is encoded into a plurality of encoded audio signals at different bit rates. A variable bit rate audio signal is produced by selecting between the plurality of encoded audio frames of different bit rates in accordance with a selection criterion.
Claims20
A method for producing a variable bit rate audio signal, comprising:
- encoding an audio signal into a plurality of encoded audio signals at different respective bit rates, the plurality of encoded audio signals comprising:
- a first encoded audio signal comprising a first bit rate audio signal, and
- a second encoded audio signal comprising a second bit rate audio signal;
- and
- generating said variable bit rate audio signal by selecting the first and second encoded audio signals in accordance with a ranking metric indicative of encoding distortion in the encoded audio signals.
A tangible computer-readable medium having stored thereon a plurality of instructions for producing a variable bit rate audio signal, said instructions comprising:
- instructions for encoding an audio signal into a plurality of encoded audio frames at different bit rates, the plurality of encoded audio frames comprising:
- a first encoded audio frame comprising a high bit rate audio signal, and
- a second encoded audio frame comprising a low bit rate audio signal;
- and
- instructions for generating a variable bit rate audio signal by selecting the first and second encoded audio frames in accordance with a ranking metric indicative of encoding distortion in the encoded audio frames.
A system for producing a variable bit rate framed audio signal, the system comprising a processor and a memory communicatively coupled to said processor when said system is operational, said memory having stored therein computer instructions that upon execution by the processor cause:
- encoding an audio signal into a plurality of encoded audio signals at different bit rates, the plurality of encoded audio signals comprising:
- a first encoded audio signal comprising a high bit rate audio signal, and
- a second encoded audio signal comprising a low bit rate audio signal;
- and
- generating said variable bit rate audio signal by selecting the first and second encoded audio signals in accordance with a ranking metric indicative of encoding distortion in the encoded audio signals.
A system for producing a variable bit rate framed audio signal, the system comprising a processor and memory, the system comprising:
- means for encoding an audio signal into a plurality of encoded audio signals at different respective bit rates, the plurality of encoded audio signals comprising:
- a first encoded audio signal comprising a high bit rate audio signal, and
- a second encoded audio signal comprising a low bit rate audio signal;
- and
- means for generating said variable bit rate framed audio signal by selecting the first and second encoded audio signals in accordance with a ranking metric indicative of encoding distortion in the encoded audio signals.
Dependencies are inferred from the claim text.