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| author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2012-05-15 10:49:41 -0400 |
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| committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2012-05-15 10:49:41 -0400 |
| commit | 2cb95f528582ed19a1acedbba6ca513649dd736c (patch) | |
| tree | d43d2fdd25f24735d5a7c49ca6de6211a4ef4de1 | |
| parent | 1a113a148938459c1f6e1b8b89431c46be8eef1e (diff) | |
| download | opus-2cb95f528582ed19a1acedbba6ca513649dd736c.tar.gz | |
draft: reference for LSP stability
| -rw-r--r-- | doc/draft-ietf-codec-opus.xml | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/doc/draft-ietf-codec-opus.xml b/doc/draft-ietf-codec-opus.xml index b14532cf..4b59db99 100644 --- a/doc/draft-ietf-codec-opus.xml +++ b/doc/draft-ietf-codec-opus.xml @@ -2992,7 +2992,7 @@ NLSF_Q15[k] = clamp(0, However, nothing in either the reconstruction process or the quantization process in the encoder thus far guarantees that the coefficients are monotonically increasing and separated well enough to ensure a stable - filter <xref target="line-spectral-pairs"/>. + filter <xref target="Kabal86"/>. When using the reference encoder, roughly 2% of frames violate this constraint. The next section describes a stabilization procedure used to make these guarantees. @@ -7714,6 +7714,17 @@ Robust and Efficient Quantization of Speech LSP Parameters Using Structured Vect <seriesInfo name="IEEE Trans. on Information Theory, Vol. 32" value="pp. 568-583" /> </reference> +<reference anchor="Kabal86"> +<front> +<title>The Computation of Line Spectral Frequencies Using Chebyshev Polynomials</title> +<author initials="P." surname="Kabal" fullname="P. Kabal"><organization/></author> +<author initials="R." surname="Ramachandran" fullname="R. P. Ramachandran"><organization/></author> +<date month="December" year="1986" /> +</front> +<seriesInfo name="IEEE Trans. Acoustics, Speech, Signal Processing, vol. 34, no. 6" value="pp. 1419-1426" /> +</reference> + + <reference anchor="Valgrind" target="http://valgrind.org/"> <front> <title>Valgrind website</title> |