Agreed, classical music has many characteristics that make it sensitive to
truncation distortion.
And speaking of pop music, fresh of Ian Shepherd’s Dynamic Range Day webcast…
I happened to pull up vinyl today, unrelated to anything…I really wanted to get
a decent digitization of an ancient (19
On 30/03/2014, Didier Dambrin wrote:
> You keep saying that & everyone seems to agree, but I'd still like to hear
> just one simple example of that, in a wav file. Until I've heard it, I'll
> keep saying that dithering to 16bit is pointless.
I wish I could show you a sample of that badly mastered
around 14bits, for a
final result not to be post-processed).
-Message d'origine-
From: robert bristow-johnson
Sent: Saturday, March 29, 2014 8:55 PM
To: music-dsp@music.columbia.edu
Subject: Re: [music-dsp] R: Dither video and articles
but at 16 bits (like mastering a red
book CD
On 3/29/14 12:37 PM, Nigel Redmon wrote:
(Not address to you, Robert, because you know it well...)
One thing people don’t realize is that integer processors like the 56k family
had a full-precision accumulator for 24-bit multiply results (48-bit), plus 8
bits of headroom (56 bit accumulator).
(Not address to you, Robert, because you know it well...)
One thing people don’t realize is that integer processors like the 56k family
had a full-precision accumulator for 24-bit multiply results (48-bit), plus 8
bits of headroom (56 bit accumulator). Floating point, in general, truncates on
e
On 2014-03-29, robert bristow-johnson wrote:
and all the headroom in the world (i think about 750 dB, i wonder what
750 dB above my threshold of hearing might sound like :-).
If I'm getting my energetics half right, that's well above even what
hypernovas put out. Those things don't so much so
On 3/29/14 10:55 AM, robert bristow-johnson wrote:
in general (well, assuming uniform pdf up to the max signal level), to
compare the tradeoff between fixed and float of the same word-width,
it's:
8.45 dB + (headroom in dB) > (6.02 dB) * (num bits in exponent)
if that inequality is sat
On 3/29/14 4:43 AM, Nigel Redmon wrote:
20 * log10(2^num_bits)
which is about 6.0206 * num_bits.
So, 32 bits is 192.7 dB.
no headroom.
32-bit floating point has 23 bits for mantissa, plus a hidden bit from
normalization, plus a sign bit, for 25 bits of precision, so that works out to
1
20 * log10(2^num_bits)
So, 32 bits is 192.7 dB.
32-bit floating point has 23 bits for mantissa, plus a hidden bit from
normalization, plus a sign bit, for 25 bits of precision, so that works out to
150.5 dB.
On Mar 29, 2014, at 1:06 AM, Marco Lo Monaco wrote:
> Hey Robert, can you give a qu
Hey Robert, can you give a quick detailed computation about the 32bit fixed
vs floating (or where the 40dB limit headroom just comes from)?
Fixed point to me is kind of the dark side of the force...
:)
M.
> -Messaggio originale-
> Da: music-dsp-boun...@music.columbia.edu [mailto:music-d
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