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Subject: Re: Call for testers and DSP brains

Re: Call for testers and DSP brains

From: Bryan VanDyke <>
Date: Wed, 18 Feb 2009 14:49:38 -0500

pondlife wrote:
> Hi all,
> I'd very much like to see FS#8894 in SVN at some point. This allows speed
> to be changed independently of pitch. It's particularly useful with audio
> books/podcasts (and maybe would be useful for audible fast forward/rewind).
> However, it has had problems with locking up when EQ/crossfeed are in use,
> perhaps when CPU usage gets too high (given that it fails on target and
> never on the sim). Or maybe it's something to do with the various DSP
> initialisations being done incorrectly.
> However, I can no longer repro this on my real H300, so I wonder if it's due
> to another bug that's recently been fixed.
> So... I'd like help with two things:
> 1) People to test the patch and report back.
> 2) Rockbox DSP gurus to take a look at it. It might be something obvious.
> And if you think you can improve the audio quality, feel free to do that too
> ;)
> The other issue to be is that it grabs a chunk of static memory - I think
> this should be allocated from the audio buffer only when the feature is
> first enabled (restarting playback as needed).
> pondlife

Iriver H10 5g
Fresh pull and the 090218 patch.
With Speed turned on.

Crossfeed - can't get it lock up. Seems to work fine.

With Bass, Treble, Eq on.

I can change the settings while a song is playing and everything is fine.

If I skip to the next song, ffw, or try playing a new song with the
setting already on, lock up.

Received on 2009-02-18

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