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Apply k=1 tweak for beta=1, ref and noref #197

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Apply k=1 tweak for beta=1, ref and noref #197

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3 changes: 2 additions & 1 deletion src/pvq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -887,7 +887,7 @@ int od_pvq_compute_k(od_val32 qcg, int itheta, od_val32 theta, int noref, int n,
#endif
if (noref) {
if (qcg == 0) return 0;
if (n == 15 && qcg == OD_CGAIN_SCALE && beta > OD_BETA(1.25)) {
if (n == 15 && qcg == OD_CGAIN_SCALE) {
return 1;
}
else {
Expand All @@ -914,6 +914,7 @@ int od_pvq_compute_k(od_val32 qcg, int itheta, od_val32 theta, int noref, int n,
approximation for the fact that the coefficients aren't identically
distributed within a band so at low gain the number of dimensions that
are likely to have a pulse is less than n. */
if (n == 15 && itheta == 1 && beta == OD_BETA(1)) return 1;
if (nodesync) {
#if defined(OD_FLOAT_PVQ)
return OD_MAXI(1, (int)floor(.5 + (itheta - .2)*sqrt((n + 2)/2)));
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