Freerunner audio channels

Denis Johnson denis.johnson at
Fri Aug 7 23:48:24 CEST 2009


2009/8/8 Vasco Névoa <vasco.nevoa at>

> I think you're all missing the point.
> David's initial post is a breath of fresh air into a long debated but
> (AFAIK) non-resolved issue.
> I deeply welcome his investigation into this subject, and support his
> questions (which I also would like to see answered).
> Although the issue of low playback volume is rather well controlled in
> our FRs, the issue of low recording volume for GSM transmission
> remains - with callers still complaining and going "what? I didn't
> hear you..." now and then, especially in (even slightly) noisy
> environments.
> The whole "audio settings for GSM" issue is _not_ cut and dried, in my
> view. I still have to go into frameworkd.conf every time I flash the
> phone and set the DSP to "long-aec" to avoid echo and sporadic audio
> clipping, as well as raising the volume in playback and mic in
> gsmhandset.state... and I'm still not satisfied with audio quality.
> So, can someone please humor David and me and explain this sidetone
> channel business?
> Thanks.
> Vasco.
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