Re: Buzzing on GSM audio

I am also a T-Mobile user in the U.S. (Tampa FL) and I've had the buzzing noise from the get go. It's pretty bad. So much so that I've had to remove my SIM card and stuff it back into my old phone. Jim Morris wrote: Matt Luzum wrote: I'm using 2007.2. I've attached everything in /usr/sh

Re: Buzzing on GSM audio

Am So 27. Juli 2008 schrieb Dave Clark: > I've seen a couple articles explaining that the buzz in GSM systems is > at a fundamental frequency of 217hz and its harmonics, due to TDMA > transmission. It would seem to me that a graphic equalizer that > suppresses these audio frequencies might be m

Re: Buzzing on GSM audio

I've seen a couple articles explaining that the buzz in GSM systems is at a fundamental frequency of 217hz and its harmonics, due to TDMA transmission. It would seem to me that a graphic equalizer that suppresses these audio frequencies might be more effective... Any thoughts? Dave __

Re: Buzzing on GSM audio (settings also work well with GTA01)

I spoke a little too soon. A real test talking to someone else still had echo. So, it's better, but could still use improvement. Eric Eric Olson wrote: > Hi, > I'm just confirming that this helps audio on GTA01 as well. Testing > with another phone, I was able to get rid of echo almost entir

Re: Buzzing on GSM audio (settings also work well with GTA01)

Hi, I'm just confirming that this helps audio on GTA01 as well. Testing with another phone, I was able to get rid of echo almost entirely (between our two phones) by reducing Mono Playback Volume to 72. Hopefully, this will be loud enough to hear well in noisy places -- I'll have to try that o

Re: Buzzing on GSM audio

On Sat, Jul 26, 2008 at 8:22 PM, Andrew Bruno <[EMAIL PROTECTED]> wrote: > I've found using alsamixer helpful for testing and then comparing which > values changed against the original gsmhandset.state file. My procedure > usually goes something like this: > > 1. ssh to FreeRunner > 2. Make a phon

Re: Buzzing on GSM audio

"Timo Jyrinki" <[EMAIL PROTECTED]> writes: > > My paranoid / not-knowing-what-I-do procedure is to: > 1. change /usr/share/openmoko/scenarios/gsmhandset.state > 2. alsactl -f /usr/share/openmoko/scenarios/gsmhandset.state restore > 3. alsactl -f /etc/asound.state store > 4. reboot > I've found usi

Re: Buzzing on GSM audio

> This may be related to US GSM frequencies ? buzzing here with simyo (an e-plus company in germany), hamburg. actually the buzzing seems worse with qtopia than with 2007.2 -- and with 2007.2 it went away when i shut down the mic (fiddling with the alsamixer while calling, the slider didn't sa

Re: Buzzing on GSM audio

2008/7/26 Andrew Bruno <[EMAIL PROTECTED]>: > FWIW, I've found tweaking these specific settings in > /usr/share/openmoko/scenarios/gsmhandset.state effect the intensity of the > buzzing sound. Specifically: > > * 'Mono Playback Volume' (85) > * 'Mono Sidetone Playback Volume' (7) > * 'Mic2 Ca

Re: Buzzing on GSM audio

Am Sa 26. Juli 2008 schrieb rakshat hooja: > I have an interesting observation to share. India still has old fixed copper > wire telephones (landlines) and when I call a landlines both sides seem to > be getting clear connections (no buzz and even the volume on the receivers > end is louder) > >

Re: Buzzing on GSM audio

> > > Belgium (JIMmobile) > and I also have this problem with the 2007.2 image, with our without wifi > or gps > there isn't much static on my end, > but the volume is quite low > the other end also has low volume and when i increase his/her volume > they get an echo > >

Re: Buzzing on GSM audio

On Sat, Jul 26, 2008 at 8:59 AM, Olivier Berger <[EMAIL PROTECTED]> wrote: > "Andrew Bruno" <[EMAIL PROTECTED]> writes: > >> I'm also experiencing buzzing during GSM calls. I'm running the latest >> 2007.2 and using a T-Mobile sim in US. From my testing the buzzing sound >> is only heard on the oth

Re: Buzzing on GSM audio

* Olivier Berger <[EMAIL PROTECTED]> [2008-07-26 08:59 +0200]: > > Anyone in Europe (or other areas than states) having the problem ? > > For me in Europe/France(/EuroDisney ;-) no problem. I'm in France (Paris, using Bouygues Tel) and I have this problem :-( > This may be related to US GSM fre

Re: Buzzing on GSM audio

Anyone in Europe (or other areas than states) having the problem ? > > For me in Europe/France(/EuroDisney ;-) no problem. > > This may be related to US GSM frequencies ? > > Just my 2 cents, > -- > > For me in India it changes almost everyday. Some days I get clear connections and on some days the

Re: Buzzing on GSM audio

"Andrew Bruno" <[EMAIL PROTECTED]> writes: > I'm also experiencing buzzing during GSM calls. I'm running the latest > 2007.2 and using a T-Mobile sim in US. From my testing the buzzing sound > is only heard on the other end (the person I'm calling). On the neo side > things seem fine. Anyone in E

Re: Buzzing on GSM audio

On Sat, 2008-07-26 at 00:47 -0400, Sparrow wrote: > we always started by creating an issue profile containing > information such as: > > 1) Wireless band being used. > 2) Geographic location. > 3) Cell Side equipment (hard to determine without details from the > providers) > 4) Signal Strength (r

Re: Buzzing on GSM audio

Am Sa 26. Juli 2008 schrieb christopher bradski: > Just curious if there is a gsm "saw filter" somewhere in the audio path (or > another filter by the amp)? Not quite sure what you mean by saw-filter, but i guess the answer is "No". > Also, I haven't popped open my freerunner yet > but could ano

Re: Buzzing on GSM audio

Am Sa 26. Juli 2008 schrieb Sparrow: > Evening Folks, > > I just wanted to enquire if anyone has started to gather info on which > bands are being using during calls that have the buzzing occurring? I tried to, but with very little success. > I > used to work with a wireless telecom pro

Re: Buzzing on GSM audio

On Fri, Jul 25, 2008 at 9:47 PM, Sparrow <[EMAIL PROTECTED]> wrote: > Evening Folks, > >I just wanted to enquire if anyone has started to gather info on > which > bands are being using during calls that have the buzzing occurring? I > used to work with a wireless telecom provider here in

Re: Buzzing on GSM audio

> Dave Clark wrote: > >> Can you correlate the buzzing to your signal level? IIRC, most phones >> will increase transmit power as needed to overcome noise. If the noise >> is caused by RFI from the GSM radio, increased power would tend to >> increase the interference. > > I have a very low signal

Re: Buzzing on GSM audio

Evening Folks, I just wanted to enquire if anyone has started to gather info on which bands are being using during calls that have the buzzing occurring? I used to work with a wireless telecom provider here in Canada in the R&D lab, and when issues like this came up with new handsets (wh

Re: Buzzing on GSM audio

Am Sa 26. Juli 2008 schrieb Dave Clark: > Jim Morris wrote: > > Dave Clark wrote: > > > > > >> Can you correlate the buzzing to your signal level? IIRC, most phones > >> will increase transmit power as needed to overcome noise. If the noise > >> is caused by RFI from the GSM radio, increase

Re: Buzzing on GSM audio

Jim Morris wrote: > Dave Clark wrote: > > >> Can you correlate the buzzing to your signal level? IIRC, most phones >> will increase transmit power as needed to overcome noise. If the noise >> is caused by RFI from the GSM radio, increased power would tend to >> increase the interference. >>

Re: Buzzing on GSM audio

Dave Clark wrote: > Can you correlate the buzzing to your signal level? IIRC, most phones > will increase transmit power as needed to overcome noise. If the noise > is caused by RFI from the GSM radio, increased power would tend to > increase the interference. I have a very low signal here o

Re: Buzzing on GSM audio

Jim Morris wrote: > Matt Luzum wrote: > >> I'm using 2007.2. I've attached everything in >> /usr/share/oopenmoko/scenarios/, and I don't believe I've updated >> anything since I received a call earlier today that sounded fine on both >> ends, so they should be good. Also, I'm using T-mobile

Re: Buzzing on GSM audio

Am Sa 26. Juli 2008 schrieb Jim Morris: > Matt Luzum wrote: > > > > > > I'm using 2007.2. I've attached everything in > > /usr/share/oopenmoko/scenarios/, and I don't believe I've updated > > anything since I received a call earlier today that sounded fine on both > > ends, so they should be

Re: Buzzing on GSM audio

Matt Luzum wrote: > > > I'm using 2007.2. I've attached everything in > /usr/share/oopenmoko/scenarios/, and I don't believe I've updated > anything since I received a call earlier today that sounded fine on both > ends, so they should be good. Also, I'm using T-mobile in the U.S. > Ok so t

Re: Buzzing on GSM audio

Matt Luzum wrote: > Jim Morris wrote: >> No luck yet, and no one has actually reported being able to make a call >> without the noise, I am >> starting to get worried that there is a fundamental flaw in the unit :( > > Just in case you really mean "no one", I should mention that I've never > ha

Re: Buzzing on GSM audio

Jim Morris wrote: > No luck yet, and no one has actually reported being able to make a call > without the noise, I am > starting to get worried that there is a fundamental flaw in the unit :( Just in case you really mean "no one", I should mention that I've never had any problem with buzzing (o

Re: Buzzing on GSM audio

Scott Benninghoff wrote: > Any luck with this? I was fooling with alsamixer last night and managed > to drown out the buzzing sound but also drowned out the voice. After > fooling with is some more, I don't hear the calling party nor can they > hear me. I'm going to start from scratch. Hopef

Re: Buzzing on GSM audio

Any luck with this? I was fooling with alsamixer last night and managed to drown out the buzzing sound but also drowned out the voice. After fooling with is some more, I don't hear the calling party nor can they hear me. I'm going to start from scratch. Hopefully I don't have to flash the f