search for: frank_wtal

...'s hard for me to<br />analyse the pitch / pitch gain computation. Some help would be really nice...<br /><br />best regards,<br />Frank<br /><br /><br /><br />---------- Urspr&uuml;ngliche Nachricht ----------<br />Von: Frank Lorenz <Frank_wtal@web.de><br />An: speex-dev@xiph.org<br />Datum: 4. Januar 2010 um 09:57<br />Betreff: Re: [Speex-dev] Fixed Point on wideband-mode: Single Frame loss on 2000<br />Hz sine causes "freak off"<br /><br /><br />Hi Jean-Marc, all,<br /><br...

Hi Jean-Marc, I'm currently trying to analyze the LPC synthesis filter. For this, can you please tell me the exact format of the LPC coeffs (in variable interp_qlpc), please? cheers, Frank -----Urspr?ngliche Nachricht----- Von: "Frank Lorenz" <Frank_wtal at web.de> Gesendet: 02.02.10 11:00:16 An: jean-marc.valin at usherbrooke.ca CC: speex-dev at xiph.org Betreff: Re: [Speex-dev]Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off" Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca> hat am 1...

...t; Because I do not know much about the internals of Speex, it's hard for me to > analyse the pitch / pitch gain computation. Some help would be really > nice... > > best regards, > Frank > > > > ---------- Urspr?ngliche Nachricht ---------- > Von: Frank Lorenz <Frank_wtal at web.de> > An: speex-dev at xiph.org > Datum: 4. Januar 2010 um 09:57 > Betreff: Re: [Speex-dev] Fixed Point on wideband-mode: Single Frame loss > on 2000 > Hz sine causes "freak off" > > > Hi Jean-Marc, all, > > I didn't get any response to my issue...

...eally<br />> > nice...<br />> ><br />> > best regards,<br />> > Frank<br />> ><br />> ><br />> ><br />> > ---------- Urspr&uuml;ngliche Nachricht ----------<br />> > Von: Frank Lorenz <Frank_wtal@web.de><br />> > An: speex-dev@xiph.org<br />> > Datum: 4. Januar 2010 um 09:57<br />> > Betreff: Re: [Speex-dev] Fixed Point on wideband-mode: Single Frame loss<br />> > on 2000<br />> > Hz sine causes "freak off"<br />...

...ould be really > > > > nice... > > > > > > > > best regards, > > > > Frank > > > > > > > > > > > > > > > > ---------- Urspr?ngliche Nachricht ---------- > > > > Von: Frank Lorenz <Frank_wtal at web.de> > > > > An: speex-dev at xiph.org > > > > Datum: 4. Januar 2010 um 09:57 > > > > Betreff: Re: [Speex-dev] Fixed Point on wideband-mode: Single Frame > > loss > > > > on 2000 > > > > Hz sine causes "freak off&q...

Hi Jean-Marc, do you have any other ideas what to look for? Or do you currently debug yourself? As I already wrote, I'm out of ideas... best regards, Frank Frank Lorenz <Frank_wtal at web.de> hat am 18. Januar 2010 um 16:39 geschrieben: > Yes, I did. > > As mentioned earlier, only the enhancer inside the docoder produces a lot of overflow messages (it points to lines 68 and 69 inside ltp.c). When I turn the enhancer of (via SPEEX_SET_ENH control), the codec runs...

...corrupts its input buffer when the "DIV32_16 bug" described above happens. Do you have any idea how to proceed? best regards, Frank -----Urspr?ngliche Nachricht----- Von: "Jean-Marc Valin" <jean-marc.valin@usherbrooke.ca> Gesendet: 06.02.08 11:07:46 An: Frank Lorenz <Frank_wtal@web.de> CC: speex-dev@xiph.org Betreff: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- bug in fixed_bfin.h / resampler saturation??? Frank Lorenz a ?crit : > I just started to examine the DIV32_16 function (Blackfin ASM > version), and wondered why the return value of th...

...outputs occur only on frames with overdriven signal, but not every frame with overdriven signal produces a debug-output. best regards, Frank -----Urspr?ngliche Nachricht----- Von: "Jean-Marc Valin" <jean-marc.valin@usherbrooke.ca> Gesendet: 12.02.08 22:49:49 An: Frank Lorenz <Frank_wtal@web.de> CC: speex-dev@xiph.org Betreff: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- bug in fixed_bfin.h / resampler saturation??? OK, a few things got accidentally broken. I've partially fixed it in svn/git (the limitation is that you can't link with both libspeex a...

...any response to my issue up to now and would like to now if anyone can reproduce this behaviour and if there is some idea what happens. I am willing to fix this issue, but because I do not know the internals of speex, I need some advice on how to proceed... best regards, Frank Frank Lorenz <Frank_wtal at web.de> hat am 21. Dezember 2009 um 10:49 geschrieben: > An update: > > I found that the "ADD32: output is not int:" messages are caused by the enhancer. When I turn the enhancer off, the messages vanish, but the "freak out" of the codec is still there - so the p...

...ed here collect2: ld gab 1 als Ende-Status zur??ck make: *** [speex_through] Fehler 1 again: any ideas how to proceed? best regards, Frank -----Urspr?ngliche Nachricht----- Von: "Jean-Marc Valin" <jean-marc.valin@usherbrooke.ca> Gesendet: 08.02.08 21:50:56 An: Frank Lorenz <Frank_wtal@web.de> CC: speex-dev@xiph.org Betreff: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- bug in fixed_bfin.h / resampler saturation??? Frank Lorenz a ?crit : > Yes, this is another point: I wrote that the resampler breaks, but > this is not the case. Instead, the speex enc...

...ssible positive value. Does the resampler use the hardware saturation available on Blackfin, or does it saturate by software? Can you point me to the place I have to look at inside the resampler function for saturation? best regards, Frank -----Urspr?ngliche Nachricht----- Von: Frank Lorenz <Frank_wtal@web.de> Gesendet: 24.01.08 15:28:49 An: speex-dev@xiph.org Betreff: FW: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- bug in fixed_bfin.h? Hi Jean-Marc, I did some further checks with 1.2 beta 3: The problematic function is DIV32_16 inside fixed_bfin.h. When I comment it out...

...mputation. Some help would >>>>> be really nice... >>>>> >>>>> best regards, Frank >>>>> >>>>> >>>>> >>>>> ---------- Urspr?ngliche Nachricht ---------- Von: Frank >>>>> Lorenz<Frank_wtal at web.de> An: speex-dev at xiph.org Datum: 4. >>>>> Januar 2010 um 09:57 Betreff: Re: [Speex-dev] Fixed Point on >>>>> wideband-mode: Single Frame >>> loss >>>>> on 2000 Hz sine causes "freak off" >>>>> >>>&...

...et worse? Jean-Marc > best regards, Frank > > > -----Urspr?ngliche Nachricht----- Von: "Jean-Marc Valin" > <jean-marc.valin at usherbrooke.ca <http://lists.xiph.org/mailman/listinfo/speex-dev> > Gesendet: 12.02.08 22:49:49 An: > Frank Lorenz <Frank_wtal at web.de <http://lists.xiph.org/mailman/listinfo/speex-dev> > CC: speex-dev at xiph.org <http://lists.xiph.org/mailman/listinfo/speex-dev> Betreff: Re: > [Speex-dev] Problem with Blackfin assembly optimizations -- bug in > fixed_bfin.h / resampler saturation??? > > &g...

...stortion lasts forever. Addittionally, I always hear some kind of "fast ticking" noise in the background (sounds like non-smooth frame-fades). Does this help you to get some idea about the cause of the problem? best regards, Frank -----Urspr?ngliche Nachricht----- Von: Frank Lorenz <Frank_wtal@web.de> Gesendet: 22.01.08 23:16:05 An: speex-dev@xiph.org Betreff: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- bug in fixed_bfin.h? Hi Marc, I encountered the problems even with older versions of speex, including 1.2beta2 and 1.1.12, too. I had no time in the last weeks to...

...for what inputs that functions fails. That would help in fixing the problem. Thanks, Jean-Marc > best regards, Frank > > -----Urspr?ngliche Nachricht----- Von: "Jean-Marc Valin" > <jean-marc.valin@usherbrooke.ca> Gesendet: 01.02.08 12:11:39 An: > Frank Lorenz <Frank_wtal@web.de> CC: speex-dev@xiph.org Betreff: Re: > FW: Re: [Speex-dev] Problem with Blackfin assembly optimizations -- > bug in fixed_bfin.h / resampler saturation??? > > > Frank Lorenz a ?crit : >> didn't get a reply to my last post (see below) -- do you have no >> i...

...ages are caused by the enhancer. When I turn the enhancer off, the messages vanish, but the "freak out" of the codec is still there - so the problem seems not to be related to the overflow messages. best regards, Frank ---------- Urspr?ngliche Nachricht ---------- Von: Frank Lorenz <Frank_wtal at web.de> An: speex-dev at xiph.org Datum: 18. Dezember 2009 um 13:36 Betreff: [Speex-dev] Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off" Hi, I'm quite sure we found a bug inside the codec (1.2rc1, wideband mode). It only occurs when speex is...

Did not send this to speex-dev mailing list by error... -----Urspr?ngliche Nachricht----- Von: "Frank Lorenz" <Frank_wtal at web.de> Gesendet: 14.01.10 14:03:22 An: Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> Betreff: Re: [Speex-dev] Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off" Hi Jean-Marc, The codec mostly does not recover, it stays instable....

Hi Jean-Marc, dBFS means dB relative to digital full scale. In other words: a sine value of -42 dBFS will, on a 16 bit PCM signal, swing between 131 and -131 only (16384 * 10^(-42/20)) So we are far below +/-8000. At the moment, I'm out of ideas how to debug systematically. That even very small rounding errors alter pitch values fundamentally makes the situation worse for me, because it

Just had a look and the fixed-point residual *does* look odd. That's worth investigating (though I don't think it's related to LPC stability). Jean-Marc Quoting Frank Lorenz <Frank_wtal at web.de>: > Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca> hat am 1. Februar 2010 um > 17:29 geschrieben: > > > Can you look at the residual signal? i.e. what it looks like after the > pitch is > > removed. Any significant difference there? Also, the pitch g...

O.k., some more info: I just tested bandwidth widening to fix this. But I need to go to gamma values below 0.9 to become stable -- clearly too much widening, I think. I looked inside the Levinson-Durbin algorithm next. The lines #ifdef FIXED_POINT r = DIV32_16(rr+PSHR32(error,1),ADD16(error,8)); #else r = rr/(error+.003*ac[0]); #endif look interesting. While for floating point,