Support and General Use > Recording

Recording Enhancements Pack

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petur:
and which gain levels. Anything above +15dB will give audible hiss. Get an external pre-amp if you need more amplification

amoergosum:
I just recorded two test files.
Both were recorded with maximum gain in order to hear the difference.
One with the Iriver firmware, the other with RB.
When I listen to the two files they seem to be equal in volume.
What I noticed was that there’s much (!) more hiss with the RB version.
How’s that possible?

petur:
you have no idea what gain settings the original firmware uses so you can't compare them.
Using max gain will give you A LOT of hiss. As the whole gain and ADC thing is done by a hardware chip, I don't see how noise levels can be different...

As stated, keep gain well below +15dB (in rockbox) and you'll be fine.

This is a table somebody once made, don't know how accurate it is:

orig fw setting     rockbox
                          adc     decrementer
line in ~             -6    +   0  (???)
ext mic 0            18   +   0
ext mic 5 ~         24   +  0
ext mic 20 ~       24   +  24

petur:
Mmmm: I think it's worth rebuilding your REP as jhMikeS committed some important recording changes which should guarantee more stability (ie no missing samples).

Mmmm:
I'm just waiting until JDGordon moves the recording settings menu really! or I'll just have to go and do it all again in a week or so! :)

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