Rockbox

  • Status Closed
  • Percent Complete
    0%
  • Task Type Feature Requests
  • Category Codecs
  • Assigned To No-one
  • Operating System
  • Severity Very Low
  • Priority Defer
  • Reported Version
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by Anonymous Submitter - 2002-01-23
Last edited by Björn Stenberg - 2002-09-21

FS#1 - uncompressed PCM recording

I would like to have the ability to develop firmware
for the Archos Recorder that allows users to record
uncompressed PCM audio to the hard drive.

Useful potential features:

PCM recording to wave files.

A recording UI that allows settings similar to those
found on a DAT recorder:

sample rate selection
stereo of mono
input level control
recording feedback to the headphones
ALC
level meter

store date/time stamp info to each sound file.

John Burt

Closed by  Björn Stenberg
2002-09-21 20:06
Reason for closing:  
Additional comments about closing:  

Closing all feature requests.

Admin
Linus Nielsen Feltzing commented on 2002-02-06 09:31

The 1Mbit/s link between the Mp3 chip and the CPU is a limiting factor.
Uncompressed 16bit audio at 44.1kHz needs about 1.5Mbit/s.

So the
theoretical maximum sample rate would be about 30kHz.

Admin
Björn Stenberg commented on 2002-02-17 17:14

Actually, in the Recorder the MAS is connected via the
parallell interface (the data bus), not via the 1Mbit/s
serial interface.

Jason Brantley commented on 2002-05-31 08:24

Is this possible? Recording PCM would be great!

JB

Admin
Björn Stenberg commented on 2002-05-31 08:27

It is possible, but we need to write new DSP code. We are desperately seeking information about the DSP but it is very hard to come by.

Anonymous Submitter commented on 2002-09-05 08:38

The classical Jukebox have an imput too, and he can
probably record in PCM too, that well be very interresting to
permit to the owners of Jukebox 6000 or studio to record in
PCM format.

Admin
Linus Nielsen Feltzing commented on 2002-09-05 08:41

Yes, the classical jukebox has a Line-In jack but the CODEC has *no*
recording capabilities. It doesn’t even have an A/D converter!

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