search for: xout2

.../CNG/VBR, using a low complexity, say 1, for a midrange bitrate, say 15kbps? was the c55 dsp able to run real-time on speex for the above configuration? can someone share their timings? tia! oh yes, just downloaded the latest revision, rev 9080 i think line 472 lsp.c else if (xout1 + xout2 < -SHL(32766,8)) should read else if (xout1 + xout2 < -SHL(32768,8)) rgds, tk

...an Marc- Thanks for looking into this- I think I needed to give you a bit more info! Sorry for such a vague initial report. So most of these problems seem to be coming from the lsp_to_lpc function. In particular the following: xout1 = xin1 - 2.f*x_freq[i2] * *n1 + *n2; xout2 = xin2 - 2.f*x_freq[i2+1] * *n3 + *n4; ... in the floating point version this code can produce xout1 or xout2 that go to INF. That is the main issue- I have also seen the IIR filter go wonky occasionally, which is what is corrupting st->mem_sp. Usually this is just because there are some odd...

...into this- I think I needed to give you a > bit more info! Sorry for such a vague initial report. > > So most of these problems seem to be coming > from the lsp_to_lpc function. In particular the following: > xout1 = xin1 - 2.f*x_freq[i2] * *n1 + *n2; > xout2 = xin2 - 2.f*x_freq[i2+1] * *n3 + *n4; > > ... in the floating point version this code can produce xout1 or > xout2 that go to INF. Well, the question is where does the problem come from. To give INF on the output, there would need to be a problem with the input. Checked that? > That...

A little more info on this: I backtracked deeper into this and it looks like excBuf is corrupted, which is corrupted by low_innov_alias being invalid. However it is not entirely clear where that gets initialized (in sb_celp it is set to out+st->frame_size) Tom