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Jean-Marc Valin 2009-01-09 00:23:56 -05:00
parent 78f42af27e
commit fb0bd20e6b
1 changed files with 12 additions and 2 deletions
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14
doc/ietf/draft-valin-celt-codec.xml
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@ -118,6 +118,9 @@ aliasing calcellation.</t>
alpha_p=0.8. The inverse of the pre-emphasis is applied at the decoder.</t> alpha_p=0.8. The inverse of the pre-emphasis is applied at the decoder.</t>
<section anchor="Range Coder" title="Range Coder"> <section anchor="Range Coder" title="Range Coder">
<t>
derf?
</t>
</section> </section>
<section anchor="Forward MDCT" title="Forward MDCT"> <section anchor="Forward MDCT" title="Forward MDCT">
@ -203,10 +206,14 @@ transmission of any allocation information.
<section anchor="Spherical Vector Quantization" title="Spherical Vector Quantization"> <section anchor="Spherical Vector Quantization" title="Spherical Vector Quantization">
<t>CELT uses a Pyramid Vector Quantization (PVQ) <xref target="PVQ"></xref> <t>CELT uses a Pyramid Vector Quantization (PVQ) <xref target="PVQ"></xref>
codebook for quantising the details of the spectrum in each band that have not codebook for quantising the details of the spectrum in each band that have not
been predicted by the pitch predictor. When no pitch is encoded, ... been predicted by the pitch predictor. The PVQ codebook consists of all combinations
of K pulses signed in a vector of N samples.
</t> </t>
<section anchor="Index Encoding" title="Index Encoding"> <section anchor="Index Encoding" title="Index Encoding">
<t>
derf?
</t>
</section> </section>
</section> </section>
@ -220,10 +227,13 @@ been predicted by the pitch predictor. When no pitch is encoded, ...
<section anchor="CELT Decoder" title="CELT Decoder"> <section anchor="CELT Decoder" title="CELT Decoder">
<t> <t>
Some more text Like for most audio codecs, the CELT decoder is less complex than the encoder.
</t> </t>
<section anchor="Range Decoder" title="Range Decoder"> <section anchor="Range Decoder" title="Range Decoder">
<t>
derf?
</t>
</section> </section>
<section anchor="Energy Envelope Decoding" title="Energy Envelope Decoding"> <section anchor="Energy Envelope Decoding" title="Energy Envelope Decoding">