thats a might big log youve got there... On Wed, Jul 8, 2009 at 12:57 PM, Risto H. Kurppa<[email protected]> wrote: > om2009t5 and the same issue here. > > I had a discussion about it at #openmoko(-cdevel), here's the log > > > Jun 17 23:51:10 <rhkfin> DocScrutinizer: The echo doesn't to seem to > be stable: during one call it sometimes echoes sometimes doesn't (when > I'm quiet and the other end talks). To me it sounds like the noise > gate doesn't work fully but the background noise (be it the voice of > the other person or background noise like bus, computer fan, whatever) > is amplified a lot.. > Jun 17 23:52:23 <DocScrutinizer> hmmm, so maybe reducing control.5 a > few units may help a lot then > Jun 17 23:52:56 <DocScrutinizer> also I'm not quite sure OM2009 > handles AT%N correctly > Jun 17 23:53:49 <rhkfin> the echo reduction? Hmm.. I really hope it > doesn't and when it's fixed things get easier.. I'll ask nytowl > later.. > Jun 17 23:53:51 <DocScrutinizer> and if OM2009 has borked statefiles, > everything may happen, even feedback inside mixer > Jun 17 23:54:15 <rhkfin> DocScrutinizer: I'm using the -new (-based > I've tried to fix further a bit myself) > Jun 17 23:55:51 <DocScrutinizer> aah, ok. Then just reduce control.5 > until you get decent sensitivity for far end hearing you loud but > without ambient noise penetrating noisegate > Jun 17 23:55:53 <rhkfin> DocScrutinizer: Do you think the -new > statefile should work for all FR's or are there small differencies in > the component values that cause the need for a little tuning for each > unit? (well, depends on the operator etc... Hmm.. ) > Jun 17 23:56:42 <DocScrutinizer> rhkfin: for sure you need to adjust > according to your particular buzzfix situation > Jun 17 23:56:59 <rhkfin> 'mono playback volume' is the volume of > signal from my microphone sent to calypso? > Jun 17 23:57:14 <DocScrutinizer> *sigh* mompl > Jun 17 23:57:27 <DocScrutinizer> numid=5,iface=MIXER,name='Mono Playback > Volume' > Jun 17 23:57:32 <rhkfin> yes > Jun 17 23:59:32 <DocScrutinizer> during call open amixer, adjust "mono > pl.b. vol", then do a `alsactl store .../gsmhandset.state` > Jun 17 23:59:45 <DocScrutinizer> *then* finish call > Jun 18 00:00:23 <DocScrutinizer> probably you prefer to do this from a > decent PC via ssh > Jun 18 00:00:33 <rhkfin> yes, understand and can do that, just want to > understand the behaviour.. > Jun 18 00:01:14 <rhkfin> mono playb. vol is the signal that I hear > from my speaker, isn't it? > Jun 18 00:01:39 <DocScrutinizer> alternatively write a script you call > in FR terminal that does the amixer invocation and after amixwer > returns does the alsactl store thingie automatically > Jun 18 00:01:54 <rhkfin> reducing it reduces the changes of the mic > picking up the signal - but also at the same time makes it harder for > me to hear the other end? > Jun 18 00:02:10 <DocScrutinizer> rhkfin: nope, control.5 is > mixer-to-gsmMicInput > Jun 18 00:02:19 <rhkfin> oh, ok.. > Jun 18 00:02:46 <DocScrutinizer> it's the sensitivity of your handsets > microphone > Jun 18 00:03:02 <rhkfin> ok, understand. Now it makes sense. > Jun 18 00:03:17 <rhkfin> How can I play with the gate level? > Jun 18 00:03:46 <DocScrutinizer> see wiki for description of AT%N > valid numeric arguments > Jun 18 00:04:02 <rhkfin> so the gate is in calypso, not alsa. ok > Jun 18 00:04:03 <DocScrutinizer> sorry no pointer ATM, you have to search for > it > Jun 18 00:04:15 <rhkfin> np > Jun 18 00:04:20 <DocScrutinizer> yup, gate and echo cancellation in modem > Jun 18 00:04:36 <rhkfin> ok, got it.. > Jun 18 00:04:54 <rhkfin> Thanks for this, let's see if i'd be able to > improve it a bit again.. > Jun 18 00:05:13 <DocScrutinizer> mixer is a simple preamp for mic from > modems POV > Jun 18 00:06:13 <rhkfin> This is the one, I guess: > http://wiki.openmoko.org/wiki/Hardware:AT_Commands#Echo_Suppression_and_Noise_Reduction > Jun 18 00:06:44 <DocScrutinizer> yup, exactly > Jun 18 00:06:57 <rhkfin> what's short & long AEC? > Jun 18 00:07:08 <DocScrutinizer> I think it's n some of FSOs config-files > Jun 18 00:08:04 <DocScrutinizer> I guess it'S about signal delay from > output to input, I.E. how long the sound needs thru the air from > speaker to mic > Jun 18 00:08:31 <DocScrutinizer> not sure about that though, mere guess > Jun 18 00:08:37 <rhkfin> ok.. > Jun 18 00:09:23 <DocScrutinizer> might as well be sth about how long > it takes the AEC to recalibrate from silence to voice and back > Jun 18 00:11:04 <rhkfin> and noise cancellation is the gate? > Jun 18 00:11:07 <DocScrutinizer> rhkfin: check mailing lists, there > has to be a better more comprehensive explanation of AT%N > Jun 18 00:11:14 <DocScrutinizer> yup, > Jun 18 00:11:31 <rhkfin> ok, thanks for the pointerst! > Jun 18 00:11:41 <DocScrutinizer> the dB value is probably the level > where it kicks in > Jun 18 00:11:51 <rhkfin> right > Jun 18 00:12:41 <DocScrutinizer> be aware there's lots of confusion > about exact semantics of AT%N > Jun 18 00:13:28 <rhkfin> ok.. I'll try to find my way through the > nasty poisonous AT-spikes shot at me from the Fortress of Calypso.. > Jun 18 00:13:50 <DocScrutinizer> I even seen statements these commands > are accumulative, like "AT%N293; AT%N105" > Jun 18 00:15:22 <rhkfin> long AEC -12dB and nose reducion is active.. > Jun 18 00:19:27 <DocScrutinizer> mompl, started search across *all* my OM-mail > Jun 18 00:19:45 <DocScrutinizer> may take a few minutes (no quadcore here ;-) > Jun 18 00:24:13 <wpwrak> i'd have to call the CIA to do that ... > Jun 18 00:25:41 <DocScrutinizer> sheeesh, 80.000 msgs searched, no > success to find the code sniplet I know I've seen long ago :-/ > Jun 18 00:25:57 <DocScrutinizer> start agin with more fuzzy searchstring > Jun 18 00:26:19 <DocScrutinizer> start agin' - yeah, true ;-) > Jun 18 00:29:54 <DocScrutinizer> kmail search eats swap like hell > Jun 18 00:32:39 <DocScrutinizer> ooooh my.... > Jun 18 00:33:16 * DocScrutinizer considers to install a beowulf with > all the FR around here ;-) > Jun 18 00:34:18 <DocScrutinizer> though kmail using threads for search > would help a lot to exploit full power of dual cores > Jun 18 00:34:53 * DocScrutinizer considers using grep instead > Jun 18 00:36:11 <wpwrak> mutt can also search mail bodies > Jun 18 00:50:17 <DocScrutinizer> rhkfin: > http://lists.openmoko.org/pipermail/hardware/2009-June/001240.html > Jun 18 00:51:36 <fredrin> wpwrak: thanks again for the buzzfix :DD > Jun 18 00:52:58 <DocScrutinizer> rhkfin: be aware though nobody knows > exactly what's the meaning of ""reset trigger for AEC / SPENH "" > Jun 18 00:54:06 <DocScrutinizer> rhkfin: I strongly suggest to OR the > bitmasks for the desired settings, and send these to calypso as a > single AT%N command > Jun 18 00:55:22 <fredrin> DocScrutinizer: Do i need to use the AT > command to fix the echo? how? > Jun 18 00:55:49 <DocScrutinizer> the meaning of bit0 ""ACK bit : set > to 1 in order to warn DSP..."" is completely up to anybody's guess > Jun 18 00:57:40 <DocScrutinizer> depends on your distro, and on your > config. please read backscroll of this #chan, starting with > ""[2009-06-18 01:44:45] <wpwrak> DocMobilizer: 1k seems good, yes. he > had some big problems with echo, but that may be the alsa state"" > Jun 18 00:58:01 <DocScrutinizer> fredrin: you got backscroll? > > I also have these links open as tabs to try out at some stage to play > around with the settings - haven't had the time so far.. > > http://wiki.openmoko.org/wiki/Hardware:AT_Commands#Echo_Suppression_and_Noise_Reduction > http://wiki.openmoko.org/wiki/Neo_1973_and_Neo_FreeRunner_gsm_modem#AT_command_interface > > > r > > -- > | risto h. kurppa > | risto at kurppa dot fi > | http://risto.kurppa.fi > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community >
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