Is the echo still an issue when people are using the earbud headphone/mics that come with the phone?
On Mon, Dec 15, 2008 at 12:15 AM, Paul <[email protected]> wrote: > I have been thinking about the possible causes for the echo bug. I > have a feeling that it's actually feedback and not an echo. I think > what's happening is the sound is being picked up by the mic and being > sent to the remote phone for an extra round of fun. > > Does anyone know how I would start testing this? In particular, I > would like to try the following. > > 1. Disable the mic totally and raise the handset volume. I know the > handset volume is set by Control.4 values in gsmhandset.state file. I > would make some phone calls and have the remote party talk to see if > an echo occurs. If not echo occurs, well then we know the mic is part > of the cause. > > I also know that our telephone systems do not transmit the whole > audible frequency range. Is there a way to clip the audio from the > mic for phone calls? I think this would translate to > reduce/elimination of buzz. > >
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