doepfer/a-118
A-118 Noise / Random
A noise and random voltage generator producing white noise, colored noise, and random voltage.207
Capabilities 3
- Noise Generatornoise-generator
- Produces white noise and colored noise (adjustable mix of red/low-frequency and blue/high-frequency components) generated 100% analog by amplifying transistor noise.207
- Random Sourcerandom-source
- Random Voltage Sourcerandom-voltage-source
- Produces a random voltage derived from the colored noise signal by lowpass filtering; rate of change and amplitude are independently controllable.207
Jacks 3
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Outputs (3) | |||
| Colored | audio | — | Colored noise output whose spectrum is determined by the Blue and Red control positions.207 |
| Random Output | cv | — | Random voltage output whose rate of change and amplitude are determined by the Rate and Level controls.207 |
| White | audio | — | White noise output containing all audio frequencies at random amplitude with a completely flat spectrum.207 |
Parameters 5
| Name | Type | Range | Behavior |
|---|---|---|---|
| Blue | menu_setting | — | Adjusts the amount of blue noise (high frequency components) in the colored noise output.207 |
| Level | menu_setting | — | Adjusts the amplitude of the random voltage at the Random Output.207 |
| Random Control | menu_setting | — | Two LEDs indicate whether the random voltage is positive (+) or negative (-) at any point in time. Their relative brightness also shows amplitude.207 |
| Rate | menu_setting | 0 – 10 | Controls the cycle time T of the random voltage output. A setting of 0 gives fast voltage changes (spectrum similar to pink noise); a setting of 10 gives slow changes. T is a theoretical figure due to the random nature of the output.207 |
| Red | menu_setting | — | Adjusts the amount of red noise (low frequency components) in the colored noise output.207 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [207]
- [208]