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...ere is the list of all functions called by speex_echo_cancel until goes into infinite loop: speex_echo_cancel() | spx_fft | kiss_fftr | kiss_fft | kiss_fft_stride | kf_work Function kf_work looks like: static void kf_work(kiss_fft_cpx * Fout, const kiss_fft_cpx * f, const size_t fstride, int in_stride, int * factors, const kiss_fft_cfg st) { kiss_fft_cpx * Fout_beg=Fout; const int p=*factors++; // the radix const int m=*factors++; // stage's fft length/p const kiss_fft_cpx * Fout_end = Fout + p*m; if(m==1) { do { *Fout = *f; f += fstride*in_...

? hi all, i am using the Acoustic Echo Cancellation from "Speex 1.1.12 version" in my VOIP application. Is it that the frame length to be chosen should always be 20ms or can i have flexibility in chosing the frame lenght? on what parameters does the frame length choise depends? thank you all, Shri. -------------- next part -------------- An HTML attachment was scrubbed... URL:

...19b431 100644 --- a/celt/_kiss_fft_guts.h +++ b/celt/_kiss_fft_guts.h @@ -34,6 +34,19 @@ and defines typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */ #include "kiss_fft.h" +#include "arch.h" +/* +void kf_bfly4_c( kiss_fft_cpx * Fout, const size_t fstride, + const kiss_fft_state *st, + int m, int N, int mm); +*/ + +#if defined (ARMv7_NEON_INTRINSICS_FLOAT) +#include "arm/kiss_fft_neon.h" +#define kf_bfly4 kf_bfly4_neon +#else +#define kf_bfly4 kf_bfly4_c +#endif /* Explanation of macros dealing with complex math: diff --git a/celt/...

Hello, This patch introduces ARM NEON Intrinsics to optimize kf_bfly4 routine in celt part of libopus. Using NEON optimized kf_bfly4(_neon) routine helped improve performance of opus_fft_impl function by about 21.4%. The end use case was decoding a music opus ogg file. The end use case saw performance improvement of about 4.47%. This patch has 2 components i. Actual neon code to improve

...body. > > I have the same problem like you. I use ARM microcontroller too. > > Here is the list of all functions called by speex_echo_cancel until goes > > into infinite loop: >... > > else > > { > > do > > { > > kf_work(Fout , f, fstride*p, in_stride, factors,st); // ><---------- > > here this function calls itself and that's why goes infinite > > f += fstride*in_stride; > > } > > while( (Fout += m) != Fout_end ); > > } > > ... > >This is quite surprising. Can...