Bit depth (8, 16, etc.) represents how precisely the audio data is stored. If you understand floating point and fixed point arithmetic, it is easy to follow, or else a simple google search would do it.
Basically 32 bit float is approximately 25 bit fixed point audio. We prefer operating in floating point domain because most of the DSP processors and DSP algorithms are tuned for that. This gives more dynamic range and slightly higher precision than, say 24 bit.
Now you might have figured out why 32 bit integer which is fixed point, sounds better than a 32 bit IEEE floating point.
I am not a firm believer of upsampling (for e.g. you converting a 16bit mp3 to a 32 bit wav). Usually upsampling tries to create some additional samples using "weighted average", "interpolation filter" techniques etc and create an illusion that it is sounding better.
If you need more info, send me an email
:: Bharath
On 10/5/05, Roshan <[EMAIL PROTECTED]> wrote:
Hi ppl,
I am just curious
i just got a new toy, Sonic Sound Forge, was playing around with it
and found out a bit - depth converter which can convert the normal mp3
and sound files to 32 bit, 32 bit IEE float, 64 bit and 64 bit iee
float and a few more.
Just wondering if anyone could explain what is it all about.. just
noticed that that if i convert to 32bit, the quality is seems to be
increasing (??) but not much changes in IEE float. sounds the same.
let me know if anyone knows about it.
thanks and regards
Roshan
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