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Subject: Re: More recording feedback
From: Martin Borus (martin_at_borus.de)
Date: 2002-11-16


Am 16 Nov 2002 um 13:49 hat Linus Nielsen Feltzing geschrieben:

> On Sat, 16 Nov 2002 11:49:22 +0100, Martin Borus wrote:
> > Hi,
> >
> > - While recording from the digital input with a 48kHz signal the
> > peak meter is almost completely deactivated: When I start the
> > recording the peak levels go up once for a split second (probably
> > the beginning) and then fall down permanently. Only this first 2-3
> > pixels of the left peak bar then show some movement.
>
> And how does the original Archos firmware behave when recording
> Digital signals? I can imagine that the peak meters don't move in the
> Archos firmware either.

The do. I'm currently uploading some quicktime videos to show you the
differences. Both time it's a digital recording. The sound you hear
in the background is the digital out of the Archos fed thru my MD
recorder.

See "http://www.syltlinks.de/rockbox/"
clip2.mov - for the Archos
clip3.mov - for Rockbox. (I didn't press play to start the recording
until after the clip - the peak meter does not change when I start it
though)

>
> > - When I stop recording and play back a file I got some strange
> > results. The playback was stuttering several times per second. After
> > turning off the unit completely the recorded file played OK.
>
> Hmm, does it happen every time you do the same thing?

Yep, at least after each longer recording. See "clip1.mov"

Here I stop a two hour recording and play it back right away.
Stutters three times (at :20) and then starts... afterwards I try to
confuse the machine by forwarding which had caused trouble the last
time... [sorry, this clip is so dark you'll have to turn up the
brightness on your screen]

> > - I know it's only demo code, but I'd still love to get text
> > feedback on the recording screen (like running time or number
> > written blocks - anything that shows that the unit is still alive
> > and gives me an estimation on how long the recording gets)
>
> I will do that when I find the time.

Here's another short suggestion. Unlike the Archos firmware you do
not turn off the input when I stop a recording. This is really useful
- because I can still hear the source and already get ready for the
next recording.

Can we have a similar thing for the recording source selection menu
as well? I would welcome if you put the selected source on the
headphones while you're in that menu as well.

> > While I'm writing this I'm doing long time recording tests - let's
> > see if the code works for 3 hours in a row... I'll post the results
> > soon.
>
> Great. It's really appreciated that you do these tests for us.

You can be shure to hear more from me... I bought the Archos because
it could record and I'm fed up with it crashing half of my overnight
recordings.

BTW, the fist two 1/2 hour recording seemed OK - couldn't record
longer as the batteries were almost empty. I edited it in with
mp3directcut and there was only one very small drop out (which might
have come from the satellite source) - apart from that everything
seemed OK.

How is the behaviour for low batteries at the moment? Do I have to
watch them closely or will the unit turn of soon enough?

The next long recording is running, if anything worth mentioning
happens, I'll post that.

Martin



Page was last modified "Jan 10 2012" The Rockbox Crew
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