search for: gamma_scaling

Hi Marc, I've downloaded the Speex1.2Beta version. In the code still there are some float variables are used for the Narrow band decoding. In the file "nb_celp.c" .93 is getting multiplied with the GAMMA_SCALING [Line number From - 1341 - 1351] Can please tell me weather the 1.2Beta version has complete narrow band decoding in fixed point?? Thanking you, Regards, T Jyothiprakash Reddy --------------------------------- Here?s a new way to find what you're looking for - Yahoo! Answers ----...

...loat 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

...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" #else #include "fixed_generic.h" #endif...

...ems. 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 only the data tables as required to support 11kbps narrowband...

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

...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? > > >...

...ypedef __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" #elif defined (FIXED_DEBUG) #include "fixed_deb...