Moog SPECTRAVOX - Page 23

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FILTER BANDS (Continued)
1 VCA CV (2 VCA CV, etc.)
A control voltage patched to this input will control the level of the associated
filter band in the synthesis filter bank. In VOCODER mode, the matched
ENV F CV output from the analysis filter bank is internally patched to its paired
synthesis filter.
CV INPUT: 0V to +8V
1 ENV F (2 ENV F, etc.)
This is a control voltage output from the analysis filter bank that tracks the
amplitude of the associated frequency band in the PROGRAM signal. In
VOCODER mode it is internally patched to its associated synthesis filter
VCA input.
CV OUTPUT: 0V to +8V
NOTE: In VOCODER mode each analysis filter ENV F output is internally patched to its
paired synthesis filter VCA CV input, but you can reroute these any way you like! Playing with these routings can
create strange vocal eects. See some of the PRESETS later in the manual for examples.
BANDS 9 & 10
This switch reproduces the HISS/BUZZ switch originally used by the Voder
operators in 1939 and changes the functionality of bands 9 & 10 in the synthesis
filter bank.
Set to BUZZ, band 10 is a bandpass filter and bands 9 & 10 receive their audio
input from the CARRIER MIX (just like all of the other filters). The levels of
bands 9 & 10 are controlled by their corresponding analysis filter bank envelope
follower outputs.
Set to HISS, band 10 is a highpass filter and bands 9 & 10 receive pure white noise as their audio input
instead of the CARRIER MIX signal (which is sent to the lower eight filters). Additionally, the level
control for bands 9 & 10 are replaced by a simple on/o signal generated by analysis filters 9 & 10.
NOTE: The ENV F outputs for bands 9 & 10 of the analysis filter bank still function as normal and can be patched
to 9 VCA CV/10 VCA CV while in HISS mode to override the on/o behavior.
TIP: BUZZ is best for when using Spectravox as a filter bank, as your CARRIER is sent to all 10 filters. HISS is best
when using Spectravox as a vocoder since its changes increase speech intelligibility and capture sibiliant and
plosive sounds better than when set to BUZZ.
1 ENV F
PANEL CONTROLS & FUNCTIONS (Continued)
1 VCA CV