diff options
| -rw-r--r-- | doc/draft-ietf-codec-opus.xml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/draft-ietf-codec-opus.xml b/doc/draft-ietf-codec-opus.xml index 9b59408d..705fa49c 100644 --- a/doc/draft-ietf-codec-opus.xml +++ b/doc/draft-ietf-codec-opus.xml @@ -731,7 +731,7 @@ The codeword is converted from a unique index in the same way as specified in (denoted N(L,K) in <xref target="PVQ"></xref>), which is the number of possible combinations of K pulses in N samples. The number of combinations can be computed recursively as -V(N,K) = V(N+1,K) + V(N,K+1) + V(N+1,K+1), with V(N,0) = 1 and V(0,K) = 0, K != 0. +V(N,K) = V(N-1,K) + V(N,K-1) + V(N-1,K-1), with V(N,0) = 1 and V(0,K) = 0, K != 0. There are many different ways to compute V(N,K), including pre-computed tables and direct use of the recursive formulation. The reference implementation applies the recursive formulation one line (or column) at a time to save on memory use, |