Support and General Use > Audio Playback, Database and Playlists
24/96 (HIRES files for playback...)
znorter:
Hi!
Do you know if RockBox for iPod is able to playback .FLAC and/or .WMA and/or .WAV files at 24bit/96...or higher formats?
very thank you ;)
preglow:
Rockbox plays back files of higher bit depth and higher sample rates than 16 bits and 44100 Hz just fine right now, but not with full quality. Here is what happens:
* Bit depth: Rockbox will decode all formats to as high a bit depth as possible for both lossy and lossless formats. All internal processing is also done at 32 bits bit depth. However, all current targets truncate to 16 bits at the output. This can be fixed if someone cares enough about it to do some programming, but the DACs in current targets really aren't good enough for this to make much sense.
* Sample rate: Rockbox will decode higher sample rate files (like 96 kHz) just fine, but resamples to 44100 at the output, so some quality is lost (especially considering the extremely crappy resampler we use). Again, someone needs to care enough to do some programming to fix this, and it makes more sense to fix this problem than the bit depth problem.
znorter:
Thank ypu, Preglow.
So, "the problem" is (are) DACs, 'cause Rockbox read all the HIRES formats also installed on iPods, right?
BUT, if the iPod is connected via USB (or another portable player that has this output) to an hiend DAC that accept 24/96?
You think I will lsten the hires without truncate something?
Again, thank you, Luca
preglow:
Well sure, if a player is able to send it's audio via USB to another DAC, anything could be possible. I don't really know the limitations of the USB audio protocol, though.
znorter:
Hi, preglow.
This is the protocol link, I am not able to understand IF...24 bit...is possible... ???
http://www.usb.org/developers/devclass_docs/audio10.pdf
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