ENCODER
1 Assignment
0 Petitions
Accused Products
Abstract
An encoder for encoding an audio signal comprising at least two channels; the encoder being configured to generate an audio difference signal dependent on at least two channels of the audio signal, wherein the audio difference signal comprises at least two parts, encode at least one part of the audio difference signal to produce a second audio difference signal and generate at least one indicator, wherein each indicator identifies the at least one part of the audio difference signal.
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Citations
71 Claims
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1-49. -49. (canceled)
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50. An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
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generate an audio difference signal based at least in part on at least two channels of the audio signal, wherein the audio difference signal comprises at least two parts; encode at least one part of the audio difference signal to produce a second audio difference signal; generate at least one indicator, wherein each indicator identifies the at least one part of the audio difference signal; calculate an energy value for each one of the parts of the audio difference signal; and
.select the at least one part of the audio difference signal based at least in part on the energy value for each one of the parts for the audio difference signal. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57)
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58. An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
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receive an encoded signal comprising a difference signal part and an difference signal selection part wherein the difference signal selection part comprises a first difference signal selection section and a second difference signal selection section; decode from the difference signal part based at least in part on the first difference signal selection section a first part of the at least one difference signal component; and decode from the difference signal part based at least in part on the second difference signal selection section a second part of the at least one difference signal component. generate at least two channels of audio signals based at least in part on the at least one difference signal component. - View Dependent Claims (59, 60)
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61. A method comprising:
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generating an audio difference signal based at least in part on at least two channels of the audio signal, wherein the audio difference signal comprises at least two parts; encoding at least one part of the audio difference signal to produce a second audio difference signal; generating at least one indicator, wherein each indicator identifies the at least one part of the audio difference signal; calculating an energy value for each one of the parts of the audio difference signal; and
.selecting the at least one part of the audio difference signal based at least in part on the energy value for each one of the parts for the audio difference signal. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68)
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69. A method, comprising:
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receiving an encoded signal comprising a difference signal part and an difference signal selection part, wherein the difference signal selection part comprises a first difference signal selection section and a second difference signal selection section; decoding from the difference signal part based at least in part on the first difference signal selection section a first part of the at least one difference signal component; decoding from the difference signal part based at least in part on the second difference signal selection section a second part of the at least one difference signal component; and generating at least two channels of audio signals based at least in part on the at least one difference signal component. - View Dependent Claims (70, 71)
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Specification