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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.
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