Re: Call noise on buzz-fixed freerunner with Qtmoko
On Sunday 20 June 2010 16:27:34 Peter Mogensen wrote: It puzzles me that I should be the only one experiencing such big a difference. Can you please try to save the alsa state file during call on SHR and try the state on QtMoko? To save state during call do: alsactl -f gsmhandset.state store Copy the result to /usr/share/openmoko/scenarios in QtMoko and try call. You can also attach the state to mail so that we can see how are they different. Regards Radek ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
Al Johnson wrote: Depending on what NeoControl does my suggestion below may or may not help. Well... it did. A bit. But not enough to make people I call happy :( So, I tried install SHR-unstable from 19th. June on another partition and according to a quick test/poll, the sound in the other end is crystal clear with SHR. It puzzles me that I should be the only one experiencing such big a difference. /Peter ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
[Peter Mogensen So 20. Juni 2010]: Al Johnson wrote: Depending on what NeoControl does my suggestion below may or may not help. Well... it did. A bit. But not enough to make people I call happy :( So, I tried install SHR-unstable from 19th. June on another partition and according to a quick test/poll, the sound in the other end is crystal clear with SHR. Well maybe that's due to the fact I beaten and drilled the SHR devels ~496 times to read http://wiki.openmoko.org/wiki/Neo_Freerunner_audio_subsystem and http://wiki.openmoko.org/wiki/Neo_1973_audio_subsystem, and each time explained additional questions that came up. ;-D Please note that the setup as suggested 2 posts above is *exactly* according to the recommended setup procedure in those wiki articles. cheers jOERG signature.asc Description: This is a digitally signed message part. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
On Friday 18 June 2010, Peter Mogensen wrote:
Radek wrote:
You can tweak alsa state in NeoControl application.
Yeah,.. but I'm ok with editing
/usr/share/openmoko/scenarios/gsmhandset.state
for now.
However... I discovered that NeoControl shows 127 for playback while my
gsmhandset.state has 110.
Is it so, that Qtmoko will apply it's own setting (127) temporarily
every time I make a call and the reason for my noise is feedback to my
microphone from my speaker?
Depending on what NeoControl does my suggestion below may or may not help.
Echo cancelation is enabled by default. It's hardcoded in modem plugin
and cant be disabled.
Ahh.. ok.. that explains why I couldn't find where it was defined :)
Al wrote:
Can you try it yourself to see exactly what the problem sounds like?
My guess is that your voice is distorted when you're speaking, there
may be some distorted echo when they're speaking, and it doesn't buzz
when nobody's speaking.
It sound like a lot of electric interference. I hear the other part load
and clear though.
The recommended setting is just a reasonable starting point. What are
your settings?
I've included the alsa state file below:
[Snipped all but the 3 important channels, and reordered for the route the
signal takes]
control.48 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 3'
iface MIXER
name 'Mic2 Capture Volume'
value 3
}
+30dB
control.12 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 7'
iface MIXER
name 'Mono Sidetone Playback Volume'
value 7
}
+6dB
control.5 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 127'
iface MIXER
name 'Mono Playback Volume'
value 110
}
-11dB
Total: +25dB
This is a ridiculous way to get that total gain, unless you want distortion.
That may be a fine goal on a guitar amp, but not on a phone. For some reason
it seems to be the recommendation , but don't ask me why. To get the same
signal level with much less chance of distortion try these:
Control 48
value 2 (+24dB)
Control 12
value 5 (0dB)
Control 5
value 122 (+1dB)
___
Openmoko community mailing list
community@lists.openmoko.org
http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
Peter Mogensen wrote: Hi, I've installed Qtmoko V24 on a buzzfixed Freerunner, but people still complain that there's so much noise in the other end that it's impossible to understand. I've checked that the ALSA state file is about the same a recommended for buzz fixed phones. You can tweak alsa state in NeoControl application. I'm wondering whether there some echo-cancellation missing in the modem configuration. Where is that configured on Qtmoko? Echo cancelation is enabled by default. It's hardcoded in modem plugin and cant be disabled. You can search for echo in this source file: http://github.com/radekp/qtmoko/blob/master/devices/neo/src/plugins/phonevendors/neo/vendor_neo.cpp But i think echo is not the same as noise. When i had echo last time the voice was clean, but repeating so that the other side could not speak, but he heard me ok. I dont know what can be the cause for noise. Regards Radek ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
On Friday 18 June 2010, Peter Mogensen wrote: Hi, I've installed Qtmoko V24 on a buzzfixed Freerunner, but people still complain that there's so much noise in the other end that it's impossible to understand. Can you try it yourself to see exactly what the problem sounds like? My guess is that your voice is distorted when you're speaking, there may be some distorted echo when they're speaking, and it doesn't buzz when nobody's speaking. I've checked that the ALSA state file is about the same a recommended for buzz fixed phones. The recommended setting is just a reasonable starting point. What are your settings? I'm wondering whether there some echo-cancellation missing in the modem configuration. Where is that configured on Qtmoko? I don't know QtMoko that well. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Call noise on buzz-fixed freerunner with Qtmoko
Radek wrote:
You can tweak alsa state in NeoControl application.
Yeah,.. but I'm ok with editing
/usr/share/openmoko/scenarios/gsmhandset.state
for now.
However... I discovered that NeoControl shows 127 for playback while my
gsmhandset.state has 110.
Is it so, that Qtmoko will apply it's own setting (127) temporarily
every time I make a call and the reason for my noise is feedback to my
microphone from my speaker?
Echo cancelation is enabled by default. It's hardcoded in modem plugin
and cant be disabled.
Ahh.. ok.. that explains why I couldn't find where it was defined :)
Al wrote:
Can you try it yourself to see exactly what the problem sounds like?
My guess is that your voice is distorted when you're speaking, there
may be some distorted echo when they're speaking, and it doesn't buzz
when nobody's speaking.
It sound like a lot of electric interference. I hear the other part load
and clear though.
The recommended setting is just a reasonable starting point. What are
your settings?
I've included the alsa state file below:
state.neo1973gta02 {
control.1 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 255'
iface MIXER
name 'PCM Volume'
value.0 0
value.1 0
}
control.2 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 255'
iface MIXER
name 'ADC Capture Volume'
value.0 0
value.1 0
}
control.3 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 127'
iface MIXER
name 'Headphone Playback Volume'
value.0 0
value.1 0
}
control.4 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 127'
iface MIXER
name 'Speaker Playback Volume'
value.0 127
value.1 127
}
control.5 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 127'
iface MIXER
name 'Mono Playback Volume'
value 110
}
control.6 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 7'
iface MIXER
name 'Bypass Playback Volume'
value.0 7
value.1 7
}
control.7 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 7'
iface MIXER
name 'Sidetone Playback Volume'
value.0 0
value.1 0
}
control.8 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 7'
iface MIXER
name 'Voice Playback Volume'
value.0 0
value.1 0
}
control.9 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Headphone Playback ZC Switch'
value.0 false
value.1 false
}
control.10 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Speaker Playback ZC Switch'
value.0 false
value.1 false
}
control.11 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 7'
iface MIXER
name 'Mono Bypass Playback Volume'
value 0
}
control.12 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 7'
iface MIXER
name 'Mono Sidetone Playback Volume'
value 7
}
control.13 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 7'
iface MIXER
name 'Mono Voice Playback Volume'
value 0
}
control.14 {
comment.access
