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Subject: Re: voice recording...

Re: voice recording...

From: <>
Date: Sun, 3 Aug 2003 14:12:25 +0200 (CEST)

On Sun, 3 Aug 2003, Rob wrote:

> Hi. I am curious about voice recording of Rockbox versus Archos code.
> It seems that using absolute worst recording settings (ideal for
> recording university lectures), Rockbox takes 10MB to record a 50 minute
> lecture. However the Archos code only takes about 7.5MB at it's absolute
> worst settings.
> Does Archos use VBR and Rockbox NOT use VBR?
> Thanks in advance.
> Rob

Simply put, the firmware sets bits in the MP3 coding chip, waits for what
the chip delivers, and stashes that to the disk. (Sorry, guys... :)

The MP3 chip always uses VBR.

I presume that you recorded two different lectures. Even if you'd put two
recorders with different firmware - but identical settings - next to each
other during one lecture, they wouldn't give the same results because of
the difference in placement. Acoustics.

If you're into real testing, then play one of your lectures on a device
with S/P-DIF out and record it using different firmwares (using DIGITAL IN
on the Archos). If you don't get identical results, someone should eat a

If you do the test, I'm very interested in your findings...

Good Da'ay,
Received on 2003-08-03

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