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Diffstat (limited to 'gr-vocoder/lib/codec2/lpc.h')
| -rw-r--r-- | gr-vocoder/lib/codec2/lpc.h | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/gr-vocoder/lib/codec2/lpc.h b/gr-vocoder/lib/codec2/lpc.h deleted file mode 100644 index 9125189d1..000000000 --- a/gr-vocoder/lib/codec2/lpc.h +++ /dev/null @@ -1,42 +0,0 @@ -/*---------------------------------------------------------------------------*\ - - FILE........: lpc.h - AUTHOR......: David Rowe - DATE CREATED: 24/8/09 - - Linear Prediction functions written in C. - -\*---------------------------------------------------------------------------*/ - -/* - Copyright (C) 2009 David Rowe - - All rights reserved. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU Lesser General Public License version 2.1, as - published by the Free Software Foundation. This program is - distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public - License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with this program; if not, see <http://www.gnu.org/licenses/>. -*/ - -#ifndef __LPC__ -#define __LPC__ - -#define LPC_MAX_ORDER 20 - -void hanning_window(float Sn[], float Wn[], int Nsam); -void autocorrelate(float Sn[], float Rn[], int Nsam, int order); -void autocorrelate_freq(float Pw[], float w[], float R[], int Nsam, int order); -void levinson_durbin(float R[], float lpcs[], int order); -void inverse_filter(float Sn[], float a[], int Nsam, float res[], int order); -void synthesis_filter(float res[], float a[], int Nsam, int order, float Sn_[]); -void find_aks(float Sn[], float a[], int Nsam, int order, float *E); -void weight(float ak[], float gamma, int order, float akw[]); - -#endif |