|
1 |
| -/*---------------------------------------------------------------------------*\ |
2 |
| -Original Copyright |
3 |
| - FILE........: AK2LSPD.H |
4 |
| - TYPE........: Turbo C header file |
5 |
| - COMPANY.....: Voicetronix |
6 |
| - AUTHOR......: James Whitehall |
7 |
| - DATE CREATED: 21/11/95 |
8 |
| -
|
9 |
| -Modified by Jean-Marc Valin |
10 |
| -
|
11 |
| - This file contains functions for converting Linear Prediction |
12 |
| - Coefficients (LPC) to Line Spectral Pair (LSP) and back. Note that the |
13 |
| - LSP coefficients are not in radians format but in the x domain of the |
14 |
| - unit circle. |
15 |
| -
|
16 |
| -\*---------------------------------------------------------------------------*/ |
17 |
| -/** |
18 |
| - @file lsp.h |
19 |
| - @brief Line Spectral Pair (LSP) functions. |
20 |
| -*/ |
21 |
| -/* Speex License: |
22 |
| -
|
23 |
| - Redistribution and use in source and binary forms, with or without |
24 |
| - modification, are permitted provided that the following conditions |
25 |
| - are met: |
26 |
| - |
27 |
| - - Redistributions of source code must retain the above copyright |
28 |
| - notice, this list of conditions and the following disclaimer. |
29 |
| - |
30 |
| - - Redistributions in binary form must reproduce the above copyright |
31 |
| - notice, this list of conditions and the following disclaimer in the |
32 |
| - documentation and/or other materials provided with the distribution. |
33 |
| - |
34 |
| - - Neither the name of the Xiph.org Foundation nor the names of its |
35 |
| - contributors may be used to endorse or promote products derived from |
36 |
| - this software without specific prior written permission. |
37 |
| - |
38 |
| - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
39 |
| - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
40 |
| - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
41 |
| - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
42 |
| - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
43 |
| - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
44 |
| - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
45 |
| - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
46 |
| - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
47 |
| - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
48 |
| - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
49 |
| -*/ |
50 |
| - |
51 |
| -#ifndef __AK2LSPD__ |
52 |
| -#define __AK2LSPD__ |
53 |
| - |
54 |
| -#include "arch.h" |
55 |
| - |
56 |
| -int lpc_to_lsp (spx_coef_t *a, int lpcrdr, spx_lsp_t *freq, int nb, spx_word16_t delta, char *stack); |
57 |
| -void lsp_to_lpc(spx_lsp_t *freq, spx_coef_t *ak, int lpcrdr, char *stack); |
58 |
| - |
59 |
| -/*Added by JMV*/ |
60 |
| -void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin); |
61 |
| - |
62 |
| -void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes); |
63 |
| - |
64 |
| -#endif /* __AK2LSPD__ */ |
| 1 | +/*---------------------------------------------------------------------------*\ |
| 2 | +Original Copyright |
| 3 | + FILE........: AK2LSPD.H |
| 4 | + TYPE........: Turbo C header file |
| 5 | + COMPANY.....: Voicetronix |
| 6 | + AUTHOR......: James Whitehall |
| 7 | + DATE CREATED: 21/11/95 |
| 8 | +
|
| 9 | +Modified by Jean-Marc Valin |
| 10 | +
|
| 11 | + This file contains functions for converting Linear Prediction |
| 12 | + Coefficients (LPC) to Line Spectral Pair (LSP) and back. Note that the |
| 13 | + LSP coefficients are not in radians format but in the x domain of the |
| 14 | + unit circle. |
| 15 | +
|
| 16 | +\*---------------------------------------------------------------------------*/ |
| 17 | +/** |
| 18 | + @file lsp.h |
| 19 | + @brief Line Spectral Pair (LSP) functions. |
| 20 | +*/ |
| 21 | +/* Speex License: |
| 22 | +
|
| 23 | + Redistribution and use in source and binary forms, with or without |
| 24 | + modification, are permitted provided that the following conditions |
| 25 | + are met: |
| 26 | + |
| 27 | + - Redistributions of source code must retain the above copyright |
| 28 | + notice, this list of conditions and the following disclaimer. |
| 29 | + |
| 30 | + - Redistributions in binary form must reproduce the above copyright |
| 31 | + notice, this list of conditions and the following disclaimer in the |
| 32 | + documentation and/or other materials provided with the distribution. |
| 33 | + |
| 34 | + - Neither the name of the Xiph.org Foundation nor the names of its |
| 35 | + contributors may be used to endorse or promote products derived from |
| 36 | + this software without specific prior written permission. |
| 37 | + |
| 38 | + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 39 | + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 40 | + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 41 | + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 42 | + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 43 | + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 44 | + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 45 | + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 46 | + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 47 | + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 48 | + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 49 | +*/ |
| 50 | + |
| 51 | +#ifndef __AK2LSPD__ |
| 52 | +#define __AK2LSPD__ |
| 53 | + |
| 54 | +#include "arch.h" |
| 55 | + |
| 56 | +int lpc_to_lsp (spx_coef_t *a, int lpcrdr, spx_lsp_t *freq, int nb, spx_word16_t delta, char *stack); |
| 57 | +void lsp_to_lpc(spx_lsp_t *freq, spx_coef_t *ak, int lpcrdr, char *stack); |
| 58 | + |
| 59 | +/*Added by JMV*/ |
| 60 | +void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin); |
| 61 | + |
| 62 | +void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes); |
| 63 | + |
| 64 | +#endif /* __AK2LSPD__ */ |
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