GNU Radio 3.6.3 C++ API
lsp.h
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/*---------------------------------------------------------------------------*\
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FILE........: lsp.c
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AUTHOR......: David Rowe
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DATE CREATED: 24/2/93
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This file contains functions for LPC to LSP conversion and LSP to
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LPC conversion. Note that the LSP coefficients are not in radians
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format but in the x domain of the unit circle.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2009 David Rowe
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __LSP__
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#define __LSP__
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int
lpc_to_lsp
(
float
*a,
int
lpcrdr,
float
*freq,
int
nb,
float
delta);
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void
lsp_to_lpc
(
float
*freq,
float
*ak,
int
lpcrdr);
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#endif
gnuradio
gr-vocoder
lib
codec2
lsp.h
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