Dave-smith-instruments TETRA User Manual download pdf (Page 27)

Decay: 0…127 — Sets the Decay time.

Sustain: 0…127 — Sets the Sustain level.

Release: 0…127 — Sets the Release time.

Pan Spread: 0…127 — There is a pan circuit after the VCA that pans the audio

in the stereo field individually per voice. With a Pan Spread of 0, all four voices

are panned dead center. As you turn up Pan Spread, each voice is gradually

moved away from the center by different amounts. Every other voice goes in a

different direction, left or right. This provides a wide stereo field as the voices

play.

Note: Any modulation to pan will individually move each voice from its

static position as set by Pan Spread.

Program Volume: 0…127 — Sets the volume of the current program to match

volumes between programs.

Note: There is enough gain in the synth voice that with some settings,

some mild clipping distortion may be heard. If this happens, try lowering

the Voice Volume, and/or the VCA Envelope Amount (or VCA Velocity

Amount).

LFO Parameters

Tetra has four Low Frequency Oscillators (LFOs). The same parameters are

available for each.

Frequency: 0…150, sync — Sets the LFO frequency. Range 0—150 for un-

synced LFO; speed ranges from slow (30 seconds) to very fast — at 90 (8 HZ,

C-2) and above the speed steps in semitones, up to 150 (261 Hz, middle C).

Note: Some of the analog functions may not respond well to the fastest

LFO speeds, due to speed limitations of the control voltages; but they

will certainly generate some interesting sounds.

Above 150, the sync speeds are as follows:

Display Timing Sync

32 Steps

Sequence speed divided by 32; i.e. one LFO cycle

takes 32 steps

16 Steps

Sequence speed divided by 16

8 Steps

Sequence speed divided by 8

6 Steps

Sequence speed divided by 6

4 Steps

Sequence speed divided by 4

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 75 76

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Dave-smith-instruments TETRA User Manual Page 27