Prism Sound ADA-8 Operation Manual page 39

Prism Sound ADA-8 Multi-channel A/D D/A Converter
One-wire
Overkiller
Reference Sync
Sampling Jitter
Sample Rate
SNS
Split96
SSRC
Superclock
TDIF
Truncation
Two-wire
Wordclock
Wordlength
© Prism Media Products Limited, 2002
An AES3 interface carrying extended-sample-rate audio by using an
increased bit rate. Two channels can be represented just as at low
sample rates.
A proprietary Prism Sound device which progressively limits
transients ahead of an A/D converter allowing better use of dynamic
range and 'louder' recording levels.
A signal passed between digital audio equipment to ensure that all
work at identical sample rates.
Jitter in the timing of an A/D or D/A converter (or within a sample rate
converter) which causes unpleasant aharmonic distortion in the
converted audio signal.
The rate at which digital audio samples are produced by an A/D
converter. Higher sample rates allow a wider range of input
frequencies to be represented in the digital signal.
'Super Noise Shaping' – a family of Prism Sound noise shapers
providing optimal A/D conversion or wordlength reduction. See also
Noise Shaping.
An AES3 interface carrying extended-sample-rate audio by carrying
odd and even samples in the A and B channels respectively. Thus
the interface can carry only one audio channel. This technique is
also being applied to other interface formats, including MADI and
ADAT, where half the normal channel count is sacrificed.
Prism Sound 'Synchronous Sample Rate Conversion' – a sample
rate conversion technique without the distortions associated with
conventional asynchronous rate converters.
A high speed Reference Sync format at 256x the audio sample rate,
passed directly between equipment on coaxial cable, in order to
remove the need for each equipment to have its own clock-
multiplying PLL. First used on Digidesign Pro Tools I/O interfaces,
this technique is questionable since it is the PLLs which allow
incoming Ref Sync jitter to be eliminated from the point of
conversion. Jitter from the Superclock cable results directly in
sampling jitter and thus in distortion.
An eight-channel digital audio interface format first used in Tascam
DA-88 recorders.
Loss of resolution (shortening of wordlength) in a digital audio signal
path which, if not accompanied by dithering or noise shaping, results
in truncation (or quantization) distortion products.
See Split96.
A Reference Sync format comprising a TTL square clock at the
sample rate, transmitted on a coaxial cable.
The number of bits in a digital audio sample.
Operation Manual - Revision 1.00
Page 1.39