A-100 Modulators
Module | Description | Controls | Inputs/Outputs |
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A140 Envelope generator. 4 controls for Attack, Decay, Sustain and Release. Gate and re-trigger input for multiple A-D phase while gate is on. 3-step switch for 3 time ranges: from some milisecond to a few minutes. Normal and inverted output. Envelope display with LED. |
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A 145 Low frequency oscillator. Modulation oscillator with 5 waveforms: triangle, rectangle (symmetrical) sine rising and falling sawtooth. Sawtooth has twice the frequency of
the other outputs. A three-way switch for 3 frequency ranges, from some minutes up to audio range (max 5 kHz) 2 LEDīs for frequency display of triangle / sine and sawtooth. |
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A 146 Low frequency oscillator. Modulation oscillator with the waveforms: positive rectangle, symmetrical (around 0 line) rectangle, sawtooth / triangle The waveform is
continuously adjustable from rising sawtooth, through triangle to falling sawtooth. The
same control affects the pulse width of the square wave. |
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A148 Dual sample and hold. Module A-148 has two identical sample & hold modules, designed to produce 'staircase' voltages. The signal present at the sample input is sampled at a rate set by the signal at the trigger input, and held at that voltage at the S&H output. The exact shape of the staircase depends on the sort of waveform at the sample input: NOISE or RANDOM signals produce random patterns; an LFO produces rising or falling staircase patterns. Two LEDs for each S&H indicate the voltage (positive or negative) of the sampled signal. |
Each S&H |
Each S&H |