Prism Sound ADA-8 Operation Manual page 30

Prism Sound ADA-8 Multi-channel A/D D/A Converter Operation Manual - Revision 1.00
of dBs in the digital domain prior to monitoring (using, for example, the 'microscope' feature
on Prism Sound test equipment). Using this method it is easy to hear that the noise floor of
more extreme shapers is clearly not white – switching, say, from SNS1 to SNS4 sounds like
shhhhh..ssssss as the noise is shifted towards the higher frequencies. However, this is not
really a meaningful test since the sensitivity of the ear at different frequencies is very
dependent on level, and the design of the more extreme shapers is in any case intended to
render the noise floor completely inaudible at normal listening levels. Ultimately, the only
'right' choice of noise shaper is the one which sounds best for the material.
The Prism Sound SNS logo shown above is found on many of the world's finest CDs, and is
recognised as a standard of technical excellence. The logo, and accompanying sleeve note,
is available by contacting sales@prismsound.com.
© Prism Media Products Limited, 2002 Page 1.30