FreeCalypso > hg > gsm-codec-lib
view libgsmefr/reorder.c @ 86:9aef9e54b19d
libgsmefr: preemph.c compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 26 Nov 2022 09:56:19 +0000 |
parents | 49dd1ac8e75b |
children | 9ad6bf2f1ee1 |
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/************************************************************************* * * FUNCTION: Reorder_lsf() * * PURPOSE: To make sure that the LSFs are properly ordered and to keep a * certain minimum distance between adjacent LSFs. * * The LSFs are in the frequency range 0-0.5 and represented in Q15 * *************************************************************************/ #include "typedef.h" #include "basic_op.h" #include "count.h" void Reorder_lsf ( Word16 *lsf, /* (i/o) : vector of LSFs (range: 0<=val<=0.5) */ Word16 min_dist, /* (i) : minimum required distance */ Word16 n /* (i) : LPC order */ ) { Word16 i; Word16 lsf_min; lsf_min = min_dist; move16 (); for (i = 0; i < n; i++) { test (); if (sub (lsf[i], lsf_min) < 0) { lsf[i] = lsf_min; move16 (); } lsf_min = add (lsf[i], min_dist); } }