Source Audio Spectrum Intelligent Filter User Manual page 40

Destination Dropdown Menus: Choose the final Output Destination of Processors 1 and 2. It
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is possible route the signal as follows
Output 1 Only: Routes all of that Processor's signals to the Spectrum's Output 1 jack.
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Output 1 + Output 2: Routes all of that Processor's signals to both the Output 1 & 2
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jacks.
Output 2 Only: Routes all of that Processor's signals to the Spectrum's Output 2 jack.
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Envelope 1 & 2
The Envelopes control amplitude and filter modulation of the each Spectrum Voice. Both Envelopes 1
and 2 run independently of each other and each can be assigned a different set of Voices.
Audio Input Selector Dropdown Menu: Selects the audio Input (select from Audio Input 1 and
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Audio Input 2) to which the Envelope will respond. This ability to isolate which input signal
each envelope responds to allows for what is know as "side chaining" the envelope, meaning
the envelope can react to a signal that is not necessarily being fed into one of the Voices or
being heard in the Spectrum's final Output Mix.
Envelope Type Dropdown Menu: Chooses the response of the Envelope. The Spectrum offers
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several different envelope types each with a different set of Attack, Decay, Sustain, and
Release characteristics.
Speed Knob: Depending on which Envelope Type has been selected; the Speed control
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adjusts how quickly the envelope opens and/or closes.
Sensitivity Knob: Adjusts how sensitive the envelope is to the level of the incoming signal.
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Turning the down the Sensitivity allows for harder playing, requiring that the player pluck
harder in order to fully open the envelope. Turning up the Sensitivity increases the likelihood
that the envelope opens fully with lighter playing.
Gate Knob: Adjusts the sensitivity of an internal Gate on the Envelope to Speed and Envelope
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to Depth controls (located in the LFO 1 & 2 block), meaning the Gate zeros the Speed and
Depth of the filter's LFO when it stops receiving an input signal above the assigned amplitude.
Increasing the Gate knob causes the LFO to decrease below higher and higher input levels.
SA248 Spectrum Intelligent Filter User Guide 40