The Pitch Change
Pitch Change is available on both channel ‘a’ and channel ‘b’ and therefore the
following notes will apply to both channels. Remember that any effect selected using the
‘C’ key will always be in addition to the programmed delay, and also that an inherent
effect of the pitch shifting process is an inbuilt delay which varies continually.
Programming Pitch Change - Channel a
First set all the controls to the ‘ORIGINAL SETTINGS’ outlined in the ‘Original Settings’
section and press the ‘D’ key followed by the ‘0’ key. Now depress the ‘C’ key, both the
channel ‘a’ LED and the ‘c’ LED will illuminate and the display will read 1.000 indicating
a pitch ratio of one i.e. no change in pitch from the original, or ‘unison’. The lowest pitch
available is an octave down from the original, that is half the original frequency or a ratio
of ‘0.500’. To obtain this depress the ‘*’ key followed by the ‘5’ key, the display will now
read ‘0.5’ and the ‘a’ and ‘c’ LEDs will flash indicating temporary data in the display.
Entering this ratio by depressing the ‘#’ key will cause the ‘a’ and ‘c’ LEDs to stop
flashing and the display to read ‘0.500’ indicating an octave decrease in pitch on
channel ‘a’. If we now look at the contents of channel ‘a’ (this is accomplished by
depressing the ‘A’ key) the letter ‘H’ will be flashing on the left of the display indicating
that the original and output ‘a’ are not in unison. If a delay is now required on channel
‘a’ it can be programmed in exactly the same way as in the ‘Channel ‘a’ Delay’ section.
The highest pitch available is an octave increase in the original, that is twice the original
frequency or a ratio of 2.000, and can be programmed by depressing the ‘C’, ‘2’ and
‘#’ keys respectively.
Pitch ratios of less than half or greater than two are not programmable and if tried an
error (Err) message will be displayed to warn the operator of his mistake. Pitch changes
between these two extremes are programmable to three decimal places.
The ‘Nudge’ buttons can be used to alter the pitch up or down and are most effective for
pitch searching and tuning.
Programming Pitch Change - Channel b
This is achieved exactly as for channel ‘a’ except that the ‘B’ key must be depressed prior
to programming the pitch ratio. In this case the ‘b’ and ‘c’ LEDs will flash until the pitch
ratio is entered.
S-DMX User Manual
Issue 3
Page 15
Summary of Contents for S - DMX
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