Joint encoding
Joint frequency encoding: Remove section: already covered in "Intensity stereo coding" above
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Binaural Cue Coding (BCC) is the HE-AAC PS technique extended for many input channels, all downmixing into one. The very same ILD, ITD, and IC parameters were used. [[MPEG Surround]] is similar to BCC, but allows downmixing to multiple channels, and does not seem to use ITD.{{cite thesis |first1=Chih-Kang |last1=HAN|title=MPEG Surround Codec Acceleration and Implementation on TI DSP Platform |url=https://ir.nctu.edu.tw/bitstream/11536/80541/1/162901.pdf |type=MSc |chapter= |publisher= |docket= |oclc= |access-date=}} |
Binaural Cue Coding (BCC) is the HE-AAC PS technique extended for many input channels, all downmixing into one. The very same ILD, ITD, and IC parameters were used. [[MPEG Surround]] is similar to BCC, but allows downmixing to multiple channels, and does not seem to use ITD.{{cite thesis |first1=Chih-Kang |last1=HAN|title=MPEG Surround Codec Acceleration and Implementation on TI DSP Platform |url=https://ir.nctu.edu.tw/bitstream/11536/80541/1/162901.pdf |type=MSc |chapter= |publisher= |docket= |oclc= |access-date=}} |
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==Joint frequency encoding== |
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{{unreferenced section|date=April 2023}} |
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'''Joint frequency encoding''' is an [[data compression|encoding]] technique used in [[audio data compression]] to reduce the [[Bit rate|data rate]]. |
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The idea is to merge a given frequency range of multiple sound channels together so that the resulting encoding will preserve the sound information of that range not as a bundle of separate channels but as one homogeneous data stream. This will destroy the original channel separation permanently, as the information cannot be accurately reconstructed, but will greatly lessen the amount of required storage space. Only some forms of joint stereo use the joint frequency encoding technique, such as intensity stereo coding. |
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==Implementations== |
==Implementations== |
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