4 Mar
2007
4 Mar
'07
7:33 p.m.
On Mon, 2007-03-05 at 08:37 +1100, Erik de Castro Lopo wrote:
I would be **very** surprised if it was. For a
normalised WAV file
the maximum value would be 1.0 which will correspond to a pcm24
value of 0x7ffffff.
i see no problem with that value, assuming you mean it represent 2^24-1.
do you?
The float32 file could also contain a sample
with a value of 1/(2^25) which is smaller than the pcm24 value of
0x1. Hence, float32 -> pcm24 -> float32 is not lossless.
IEEE 32 bit floating point has 1 sign bit and 23 bits of mantissa. i
don't see how you can get 1/(2^25) out of that. the small representable
value with an effective non-unity exponent (i.e. ignoring the bias
stuff) is 1/(2^23), isn't it?
awaiting enlightenment ....