<br> Is the echo still an issue when people are using the earbud headphone/mics that come with the phone? <br><br><br><div class="gmail_quote">On Mon, Dec 15, 2008 at 12:15 AM, Paul <span dir="ltr"><<a href="mailto:paultsai@gmail.com">paultsai@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I have been thinking about the possible causes for the echo bug. I<br>
have a feeling that it's actually feedback and not an echo. I think<br>
what's happening is the sound is being picked up by the mic and being<br>
sent to the remote phone for an extra round of fun.<br>
<br>
Does anyone know how I would start testing this? In particular, I<br>
would like to try the following.<br>
<br>
1. Disable the mic totally and raise the handset volume. I know the<br>
handset volume is set by Control.4 values in gsmhandset.state file. I<br>
would make some phone calls and have the remote party talk to see if<br>
an echo occurs. If not echo occurs, well then we know the mic is part<br>
of the cause.<br>
<br>
I also know that our telephone systems do not transmit the whole<br>
audible frequency range. Is there a way to clip the audio from the<br>
mic for phone calls? I think this would translate to<br>
reduce/elimination of buzz.<br>
<br></blockquote></div><br>