Limit channel node

Provides a variety of functions to limit and quantize the input channels.

This chop provides a variety of functions to limit and quantize the input channels.

Limiting a channel causes all its values to lie within a range. Several different methods are available for limiting:

Off: Do not limit the values.
Clamp: Simply cut the channel value off if it is out of the Maximum/Minimum range, and replace it with the Maximum or Minimum limit value.
Loop: Continue the channel at the other end of the interval.
Zigzag: Mirror the values back inside the interval.

Quantizing a channel value snaps its values to the closest allowable value (the “quantized values”). Quantizing methods are: Floor, Ceiling, and Round.

Quantizing a channel index is like quantizing in time, and acts as a sample and hold mechanism. The channel is sampled at a quantized index, and held at that value until the next quantized index at which time the value takes on the input value at that point.

Parameters

Limit

Type

The limit function to use:

Off	Do not limit the values.
Clamp	Simply cut the channel value off if it is out of the Maximum/Minimum range, and replace it with the Maximum or Minimum limit value.
Loop	Continue the channel at the other end of the interval.
Zigzag	Mirror the values back inside the interval.

Maximum

The maximum value the output channel can have.

Minimum

The minimum value the output channel can have.

Positive Only

Takes the absolute value of the channel, making all negative values positive.

Normalize

Scale and shift the channel so that it lies between -1 and +1.

Quantize

Quantize Value	Selects the quantization method to use: Off, Floor, Ceiling and Round.
Value Step	The increment between quantized values.
Value Offset	The offset for quantized values, to allow steps to not lie at zero, the default.
Quantize Index	Selects whether to quantize the index relative to the sample 0, or the start index of the CHOP.
Index Step	The increment between quantized indices, in seconds, frames or samples.
Index Offset	The offset for quantized indices.

Locals

C	the current channel (0 to NC-1)
NC	the total number of channels

Examples

The following examples are specifically designed to demonstrate this node:

LimitBasic

$HFS/mozilla/documents/examples/nodes/chop/limit/LimitBasic.cmd