Huron & SNAP Documentation

Patching the 96kHz Convolver
Loading the 96kHz Convolver
THE ENGINEERING TOOLS
For each channel of 96kHz convolution, the 96kHz Convolver
requires an input signal which has been divided into two 48kHz
streams of data. Each stream carries either the odd samples or
the even samples of the 96kHz data. These odd and even data
streams are input to the Convolver via a synchronous AES/EBU
Digital Input Module. The 96kHz Convolver processes the
signals in parallel, with the resultant signals being passed out of
the Huron as a pair of odd and even 48kHz signals. The final
96kHz output signal is derived by combining these interleaved
samples via a Digital to Analogue converter external to the
Huron.
Figure 59 — Patching a channel of the 96kHz convolver correctly
When loading the 96kHz Convolver the following guidelines
should be used to prevent errors occurring in the output signal:
• The 96kHz Convolver should be the first DSP using
application loaded into the VRack.
• The 96kHz Convolver should load all of the DSP resources
it requires before any other applications which utilise DSPs
are used.
• If it is impossible for the 96kHz Convolver to be the first
application using DSPs loaded into the VRack, it is
important that the Convolver is started when the DSP usage
count is a multiple of four, i.e. when the DSP usage count is
0,4,8,12,16 etc.
HURON TECHNICAL MANUAL PAGE 195