Displaying 6 results from an estimated 6 matches for "sig_scal".
2006 Jun 01
1
Fixed-point version
...e LSP_SCALING.
But in the case above, which scaling must I use? The float constant
is -1e-5, a very small value to be represented in fixed-point using a
16 bit value, effectively yielding a zero if I just multiply it by
the appropriate scale factor.
3) In arch.h, shouldn't LPC_SCALING, SIG_SCALING and GAIN_SCALING be
declared floats like LSP_SCALING and GAMMA_SCALING? Or will the
compiler handle the conversion accordingly?
Hope this questions aren't silly, or I will be very ashamed ;-) Or
should I read Knuth's books?
Cheers to all
Angelo
2004 Aug 06
0
[ANNOUNCE] PocketPC Port for speex-1.1.5 with sample code
...#if defined(_WIN32_WCE) && defined(_MSC_VER)
typedef __int64 spx_word64_t;
#else
typedef long long spx_word64_t;
#endif
typedef spx_word32_t spx_mem_t;
typedef spx_word16_t spx_coef_t;
typedef spx_word16_t spx_lsp_t;
typedef spx_word32_t spx_sig_t;
#define LPC_SCALING 8192
#define SIG_SCALING 16384
#define LSP_SCALING 8192.
#define GAMMA_SCALING 32768.
#define GAIN_SCALING 64
#define GAIN_SCALING_1 0.015625
#define LPC_SHIFT 13
#define SIG_SHIFT 14
#define VERY_SMALL 0
#ifdef ARM_ASM
#include "fixed_arm.h"
#elif defined (FIXED_DEBUG)
#include "fixed_debug.h...
2007 Aug 06
2
11kbps narrowband on a 24bit DSP
.../*shape_bits*/
0,
I have three problems.
1. My DSP has 24 bits register and memory with a 24 X 24 = 48 bit
multiply and a 56 bit accumulator. I see scaling shifts when using 32
bit registers. Can anyone tell me what scaling values like
#define LPC_SCALING 8192
#define SIG_SCALING 16384
#define LSP_SCALING 8192.
#define GAMMA_SCALING 32768.
#define GAIN_SCALING 64
#define GAIN_SCALING_1 0.015625
#define LPC_SHIFT 13
#define LSP_SHIFT 13
#define SIG_SHIFT 14
Would be required for a 24 bit register?
2. I would like to only include...
2005 May 25
3
Speex on TI C6x, Problem with TI C5x Patch
...typedef spx_int32_t spx_word32_t;
#ifdef _MSC_VER
typedef __int64 spx_word64_t;
#else
typedef long long spx_word64_t;
#endif
typedef spx_word32_t spx_mem_t;
typedef spx_word16_t spx_coef_t;
typedef spx_word16_t spx_lsp_t;
typedef spx_word32_t spx_sig_t;
#define LPC_SCALING 8192
#define SIG_SCALING 16384
#define LSP_SCALING 8192.
#define GAMMA_SCALING 32768.
#define GAIN_SCALING 64
#define GAIN_SCALING_1 0.015625
#define LPC_SHIFT 13
#define SIG_SHIFT 14
#define VERY_SMALL 0
#ifdef ARM5E_ASM
#include "fixed_arm5e.h"
#elif defined (ARM4_ASM)
#include "fixed_arm4.h...
2004 Aug 06
2
[ANNOUNCE] PocketPC Port for speex-1.1.5 with sample code
Hi Jean-Marc,
Based on the wonderful Speex project, I've created SpeexOutLoud, essentially a Speex codec port for Windows Mobile 2003 devices.
I've included a sample project intended to show the usage of SpeexOutLoud codec in a Pocket PC application based on .NET Compact Framework.
I'd request you to please go through the attached build, and include it as a contribution to the
2007 Aug 06
0
11kbps narrowband on a 24bit DSP
...>
>
>
> 1. My DSP has 24 bits register and memory with a 24 X 24 = 48 bit
> multiply and a 56 bit accumulator. I see scaling shifts when using 32
> bit registers. Can anyone tell me what scaling values like
>
>
>
> #define LPC_SCALING 8192
>
> #define SIG_SCALING 16384
>
> #define LSP_SCALING 8192.
>
> #define GAMMA_SCALING 32768.
>
> #define GAIN_SCALING 64
>
> #define GAIN_SCALING_1 0.015625
>
>
>
> #define LPC_SHIFT 13
>
> #define LSP_SHIFT 13
>
> #define SIG_SHIFT 14
>
>
&g...