[A6] Rich, rich, rich

[UnderTow]

On Fri, 14 May 2004, Ioannis Kazlaris wrote:

> Hi people,
>
> >>>NO. It's only fair to point out (for the zillionth time simce they invented
> digital audio) that when the audio goes in, it is stored as discrete steps.
> When it is brought back out, it IS an analog waveform again. Not the same one,
> but it IS analog (continuous), the same as you sampled. No matter how low the
> sampling rate.
>
> Well, sure but the continuity is different, so again the initial sound
> is not the same. I believe, based on what I have read about
> psychoacoustics, that the ear likes to INVENT the in-between harmonics
> or frequencies.

Actually it is the filters of the DAC that make the wave form continuous.
With a good 192Khz system (or a DSD system or a even a 96Khz system) you
can record a sine wave at 20Khz and reproduce it _exactly_. Even a FFT
analyse won't show any differences.

> This doesn't happen with analog or digital instruments.

It certainly does. Especially with analogue devices. The inter-modulation
happens with electricity but it is still there.

> When somebody
> hears or programs a sound at a specific frequency, he also has to
> program some 2% amplitude at an octave higher, some 0,47% at a major
> seventh above that, blah blah...you get the point...

This happens automaticly in analogue devices. No need to program it. :)

UnderTow