Re: audio problem ...

Hi Paul (et all),

it seems that iPAQ-3870 is equipped with a philips uda1341 sound chip.
Therefore sa1100-audio, uda1341 & h3600-uda1341 modules are involved ... I
was able to compile/build them myself (with the click/pop problem).

Now I´ll try to understand this printk thing - & how to build them with the
debug stuff enable ... maybe this will throw some more light on the issue.

with kind regards,
Patrik

On Tuesday 30 August 2005 03.39, Paul Eggleton wrote:
> Hi Patrik,
> > The main symptoms are clicks when opening & closing /dev/dsp. As I listen
> > to e-books with opie-reader & flite I've those clicks after every
> > sentence (there's a work around - but it's still anoying).
>
> Yes I agree this is very annoying. There are other problems too - on the
> h3800 the audio device does not always work after resume, either. But
> that's a separate issue.
>
> > Well - I decided to try to fix this, but I've to confess that I'll need
> > some help/tips.
> > As the bug was not present in 0.7.2 I thought with diff'ing some driver
> > source files I should find the track - but I was wrong.
> > Bugzilla #722 has the same symptoms - but I don't know if 39xx uses the
> > same driver as the 38xx family.
>
> It doesn't, they have different sound chips. I can't recall how it works
> on h3800, but the h3900 uses a uda1380.
>
> > What is "soft-start" - & where can it be configured (Google was not able
> > to answer ...)?
>
> Soft-start I believe means ramping the volume up and down rather than just
> turning the output on/off. I imagine you'd have to do it quite quickly so
> that it's not noticable. At this stage I don't believe the driver supports
> this so you would have to modify it. I can't imagine why this is more of a
> problem now than it was before, though.
>
> Cheers,
> Paul
Received on Thu Sep 08 2005 - 12:04:41 EDT