MOTM

If I read this correctly, your concern about aliasing in a digital 
recording is theoretically possible.  But in practice, the 
converters will filter any frequencies above the sampling rate.  
I've *never* heard any aliasing artifacts in my recordings of the 
MOTM (or acoustic guitar, etc.). 

Some argue that because these frquencies are filtered, you don't get 
quite the right sound (the interaction of these too-high-to-hear 
frequencies and the ones we can hear is missing).  This may be why I 
prefer higher sample rates, even if I have to convert back down.  
It's that 'air' thing again.

The 510 user manual will be on CD and will include sound examples in 
three formats: MP3 (128K), 44-16 wav, and 48-24 wav.  If your system 
can play all of these back it's worth comparing them.  It's also 
worth noting that a crappy playback system may obviate any of these 
differences...

Mike

--- In motm@yahoogroups.com, Robert van der Kamp <robnet@w...> wrote:
> On Sunday 08 February 2004 19:14, Mike Marsh wrote:
> 
> > Regarding recording MOTM onto disc: the less between the
> > MOTM and the bits on the disc the better.  Once the
> > signal is converted to bits, you can tweak if you want,
> > but the keep original bits around. Also, go with 24 bits,
> > then dither to 16 AS THE LAST STEP before burning the CD.
> >  A 24 bit recording (properly) dithered to 16 sounds MUCH
> > better than a straight up 16 bit reording.  I use Ozone
> > to dither and it does a spectacular job.
> 
> I'm aware of the 24 bit technique, and the dithering. But 
> I'm surprised that no one suggests the need for high sample 
> rates. Afaik, sampling at 44.1 or 48k is asking for 
> aliasing caused by signals living around the 20k range (I'm 
> told they 'wrap' around the freq roof of an AD. Afaik, if 
> I'd use a '300 saw waveform, I get lots of partials in that 
> frequency range, and maybe even higher.
> 
> Mind you I've never tried it (no 96k option here). But I got 
> this knowlegde from web articles written by a mastering 
> engineer (can't remember the source right now). What I 
> concluded from those articles is that you have to use the 
> highest possible sample rate to approach that analog audio 
> feel (apart from a jittter-free clock, etc, etc.). 
> 
> - Robert