FLANGE
– This switch sets the H949 into automatic flanging
mode. Flanging is the effect created by frequency can-
cellations when a signal with a varying delay is added to
another constant signal. The lowest frequency affected is
roughly reciprocal of the time delay (
0-10 ms
), so a
1ms
delay causes a cancellation at
1kHz
and multiples thereof.
In this mode, Manual controls sweep, the rate at which the
variable delay changes.
REVERSE
– causes short signal segments (up to the
400 ms
memory capacity of the system) to be played back in time-
reversed order. N.B. Main Output delay is not available
in Reverse mode – the Main Output delay switches are in-
stead used to select the length of the reversed segments.
Algorithm Select
The H949 allows you to select one of two pitch change algo-
rithms in order to support optimal pitch change with a vari-
ety of source material. In general, Algorithm 2 is glitch free,
but will add varying degrees of coloration to the signal, and is
more suitable for extreme pitch ratios. Algorithm 1 may cause
glitches with increasing frequency as the pitch ratio deviates
from 1:1, and is generally more appropriate for smaller pitch
ratios. We recommend experimentation to determine which
algorithm is most appropriate for any given program material
and pitch ratio. The two algorithms converge in audible effect
as pitch ratios approach an octave in either direction, and both
will perform identically at these extremes.
Main Output
Controls the delay time of the Main Output. The locking push-
buttons can be activated in any combination. Delay times are
selected in
6.25 ms
increments to a maximum of
393.75 ms
(
6.25
+ 12.5 + 25 + 50 + 100 + 200)
.
Power
When the Power button is IN the unit is powered up and oper-
ational, when it is OUT the unit is powered off and the plug-in
bypasses.
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