search for: spx_exp2

Displaying 6 results from an estimated 6 matches for "spx_exp2".

2007 Aug 06
2
Attempting to shrink speex: Are these functions necessary?
...peex_bits_peek speex_bits_nbytes speex_bits_insert_terminator In cd_search.c: noise_codebook_quant noise_codebook_unquant In filters.c: compute_rms syn_percep_zero16 qmf_decomp qmf_synth In ltp.c: forced_pitch_quant forced_pitch_unquant In math_approx.c: spx_ilog2 _spx_cos_pi_2 spx_cos_norm spx_exp2 spx_atan In nb_celp.c: nb_encoder_destroy nb_decoder_destroy In quant_lsp.c: lsp_quant_nb lsp_unquant_nb lsp_quant_high lsp_unquant_high In speex.c: speex_encoder_destroy speex_decoder_destroy speex_encode speex_decode nb_mode_query wb_mode_query speex_lib_ctl In speex_callbacks.c: speex_in...
2007 Jul 31
2
Outdated information in Speex Manual
The section that establishes the MIME type is stating audio/x-speex. Per the MIME Types and File Extensions it should be audio/ogg. If the change will be made, there's no need to put it as audio/x-ogg as the IETF values MIME types already in use. -Ivo
2007 Aug 01
2
math_approx.c
Oleg Homenko a ?crit : > Hi, > I started to optimize math_approx fixed point functions to ARM CPU. And > found out that approximations are not Taylor series, That's right. for example: > spx_exp2(x) = D0 + D1*x + D2*x^2 +D3*x^3, > where D0 = 1, D1 = log(2), D2 = (log(2))^2 / 2, D3 = (log(2))^3 / 6 for > Taylor serie, > but Speex source code uses different coefficients: > D0 = 1, D1 = log(2), D2 = 3 - 4*log(2), D3 = 3*log(2) - 2 > > Can anyone explain the difference? Was i...
2007 Aug 07
1
Attempting to shrink speex: Are these functions necessary?
...you only want 8 kbps). > In filters.c: > compute_rms > syn_percep_zero16 > qmf_decomp > qmf_synth No need for that. > In ltp.c: > forced_pitch_quant > forced_pitch_unquant No need for that. > In math_approx.c: > spx_ilog2 > _spx_cos_pi_2 > spx_cos_norm > spx_exp2 > spx_atan No need for that. > In nb_celp.c: > nb_encoder_destroy > nb_decoder_destroy No need for that if you never plan on freeing the memory > In quant_lsp.c: > lsp_quant_nb > lsp_unquant_nb > lsp_quant_high > lsp_unquant_high No need for that if you just want 8 k...
2007 Aug 07
1
Attempting to shrink speex: Are these functions necessary?
..._codebook_quant > noise_codebook_unquant > > In filters.c: > compute_rms > syn_percep_zero16 > qmf_decomp > qmf_synth > > In ltp.c: > forced_pitch_quant > forced_pitch_unquant > > In math_approx.c: > spx_ilog2 > _spx_cos_pi_2 > spx_cos_norm > spx_exp2 > spx_atan > > In nb_celp.c: > nb_encoder_destroy > nb_decoder_destroy > > In quant_lsp.c: > lsp_quant_nb > lsp_unquant_nb > lsp_quant_high > lsp_unquant_high > > In speex.c: > speex_encoder_destroy > speex_decoder_destroy > speex_encode > sp...
2007 Aug 07
0
Attempting to shrink speex: Are these functions necessary?
...t; >> In cd_search.c: noise_codebook_quant noise_codebook_unquant >> >> In filters.c: compute_rms syn_percep_zero16 qmf_decomp qmf_synth >> >> In ltp.c: forced_pitch_quant forced_pitch_unquant >> >> In math_approx.c: spx_ilog2 _spx_cos_pi_2 spx_cos_norm spx_exp2 >> spx_atan >> >> In nb_celp.c: nb_encoder_destroy nb_decoder_destroy >> >> In quant_lsp.c: lsp_quant_nb lsp_unquant_nb lsp_quant_high >> lsp_unquant_high >> >> In speex.c: speex_encoder_destroy speex_decoder_destroy >> speex_encode speex_...