Welcome to the Rockbox Technical Forums!
Re-enable the currently unused and broken dithering and noise shaping code already in Rockbox.......feedback is welcome.
Most of our lossy codecs decode to a bit depth that's significantly higher than the 16 bits that are used for output. For example, MP3 is decoded to 29 bits and Ogg Vorbis to 25 bits.
Quote from: preglow on October 29, 2006, 01:39:03 PMMost of our lossy codecs decode to a bit depth that's significantly higher than the 16 bits that are used for output. For example, MP3 is decoded to 29 bits and Ogg Vorbis to 25 bits.Aha! This I didn't know!What are the options right now? Can I test with/without myself?I guess this is used also for the optical output, as it should be limited to 16 bits. Would you consider this power consuming (thinking battery life) - e.g. compared to using the software eq?Without testing in THIS context I know I am generally PRO-dither.
Newer Apogee products use a 22kHz "bias" signal instead of audible noise, but that's expensive stuff.(http://www.apogeedigital.com/products/uv22hr.php)
Honestly, all three of the samples at their page hurt my ears quite a bit (dither, uv22hr and truncate) but the *least* painful was their Truncate sample. The audio itself was the worst sounding, but at least the noise wasn't causing me pain while listening to it.
Page created in 0.581 seconds with 25 queries.