diff options
| author | Johnathan Corgan <jcorgan@corganenterprises.com> | 2011-07-18 15:54:43 -0700 |
|---|---|---|
| committer | Johnathan Corgan <jcorgan@corganenterprises.com> | 2011-07-18 16:36:15 -0700 |
| commit | b409a4b0c6131e01fc5a03c0fc31caa4829b0dec (patch) | |
| tree | 51ec0115bd114716672f0659800cda933cfc77dd /gr-vocoder/lib/codec2/lsp.h | |
| parent | c067ea65d7433d4111b344ded6dfbf089062cf33 (diff) | |
gr-vocoder: re-implemented gr-codec2-vocoder inside gr-vocoder
Diffstat (limited to 'gr-vocoder/lib/codec2/lsp.h')
| -rw-r--r-- | gr-vocoder/lib/codec2/lsp.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gr-vocoder/lib/codec2/lsp.h b/gr-vocoder/lib/codec2/lsp.h new file mode 100644 index 0000000000..5acef01840 --- /dev/null +++ b/gr-vocoder/lib/codec2/lsp.h @@ -0,0 +1,37 @@ +/*---------------------------------------------------------------------------*\ + + FILE........: lsp.c + AUTHOR......: David Rowe + DATE CREATED: 24/2/93 + + + This file contains functions for LPC to LSP conversion and LSP to + LPC conversion. Note that the LSP coefficients are not in radians + format but in the x domain of the unit circle. + +\*---------------------------------------------------------------------------*/ + +/* + 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 __LSP__ +#define __LSP__ + +int lpc_to_lsp (float *a, int lpcrdr, float *freq, int nb, float delta); +void lsp_to_lpc(float *freq, float *ak, int lpcrdr); + +#endif |