This version (14 Sep 2022 13:59) was approved by Angu Sewa.The Previously approved version (04 Feb 2020 10:38) is available.
Table of Contents
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Multi-Tap Voltage Controlled Delay
Description
The Multi-Tap Voltage Controlled Delay cell provides a variable delay to a single audio input, producing multiple outputs. Each output signal is called a “tap.” The amount of delay for each tap can be modified in real-time by updating the value on the corresponding control input pin.
Usage
The multi-tap voltage controlled delay allows a single signal to be output as multiple, independently-delayed copies. By right-clicking and selecting the “NumChannels” option, the user can increase the number of copies, or “taps”, to be output.
A delay “Max” size is chosen prior to compilation; this value will determine the amount of modulo data RAM that the compiler will attempt to reserve for each tap. The equivalent delay in milliseconds/samples is displayed below this menu. Note that this delay Max size is reserved for each tap. It is not a shared Max-Delay that can be used by individual taps.
If the control input for any tap exceeds the maximum allowable delay for that tap, then the maximum value will be used.
Care must be taken so that the control inputs never go below zero (integer). If the control input a negative number, the output of the algorithm will jump to -1 (decimal).
Variants
- VoltageControlledDelay
- Fractional Delay Multi-Tap Voltage Controlled
Targets Supported
| Name | ADSP-214xx | ADSP-215xx/SC5xx | ADAU145x/146x |
|---|---|---|---|
| —————————————————————————- | ——————-- | ——————————-- | —————————- |
| VoltageControlledDelay | B/S | B/S | S |
| Fractional Delay Multi-Tap Voltage Controlled | NA | NA | S |
Pins
Input
| Name | Type | Description |
|---|---|---|
| ———————- | ————-- | ———————- |
| Input | Audio | Input channel 0 |
| DelayTap X | Control | Current delay for Output channel X |
Output
| Name | Type | Description |
|---|---|---|
| ———————- | ————-- | ———————- |
| Output X | Audio | Output channel X |
Note:
- X - Channel Index
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| —————————————- | ———————- | —————— | —————————————- |
| MaxDelay | 1 | Depends on Size of the Memory available | Controls the maximum amount of delay that can be used for each output tap. Change in this value requires a re-compilation |
| Memory | DM1 | NA | It allows the user to choose in which memory the delay buffer to be stored(Not for ADSP-214xx, ADSP-215xx/SC5xx) Change in this value requires a re-compilation |
| NumChannels | 1 | 20 | Number of Dealy-Tap and Output channels. Change in this value requires a re-compilation |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx | ADAU145x/146x |
|---|---|---|---|
| —————————————- | ——————————————————————————-- | —————————————- | —————————- |
| MaxDelay | The maximum delay (in samples) for each delay tap | Integer32 | Integer32 |
DSP Parameter Computation
MaxDelay = ( MaxDelay in ms ) * (FS/ 1000)
- FS - Sampling Rate
resources/tools-software/sigmastudiov2/modules/basic/voltagecontrolleddelay.txt · Last modified: 10 May 2021 17:11 by Nikhin Shetty