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In Reply to: More on "self dithering" and actual noise levels in recordings posted by Christine Tham on March 2, 2007 at 15:46:57:
"Even in the best case scenario, noise levels may be at -90-100dB. This may potentially produce a "self dithering" effect for a 16-bit recording, but it won't for a 24-bit recording (with between 20-22 bits effective resolution)."I think you meant to swap the numbers: This may potentially produce a "self dithering" effect for a 24-bit recording, but it won't for a 16-bit recording.
Note that nobody is denying that applying dither noise *is* required if a high-resolution audio signal is truncated to 16 bits. But I don't think adding noise is necessary if the same high-resolution signal is truncated to 20 bits.
And comparing dither needs of audio signals with the dither needs of video signals is comparing apples with oranges. Note that video color is not something that is hurt by dynamic range, since the color range is finite. Low rez video color deals with wider spacing between adjacent colors. Which is a lot more benign than such application applied to audio signals.
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Follow Ups
- Re: More on "self dithering" and actual noise levels in recordings - Todd Krieger 00:36:14 03/08/07 (1)
- Re: More on "self dithering" and actual noise levels in recordings - Christine Tham 14:19:47 03/08/07 (0)
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