el.tapOut(props, xn)
The tapOut node pairs with the tapIn node to provide special case behavior for implementing feedback around arbitrary parts of your signal graph. A tapOut node is identified by name, and its signal can be fed back into any part of your signal graph using a tapIn node by the same name.
It's important to note that in the digital domain, feedback requires at least a single sample delay. For efficiency, the tapOut node implements an implicit block-size delay before the signal is propagated onwards and to any corresponding tapIn nodes.
Example
This example implements a simple feedback loop with no other delay time other than the implicit block-size delay. Depending on the block size then, this example may exhibit characteristics of a comb filter or perhaps more of a feedback delay.
let input = el.in({channel: 0});
let output = el.add(
// Propagate the input signal and insert a tap out
el.tapOut({name: 'a'}, input),
// Feed the tap back in here with a 0.5 gain in the loop
el.mul(
0.5,
el.tapIn({name: 'a'})
),
);
core.render(output);
Props
Name | Default | Type | Description |
---|---|---|---|
name | '' | String | Names the output tap |
- Note: the implicit delay is always exactly one block long. You therefore have some level of flexibility in your use case by configuring the engine with a block size that suits your needs.