Overview

Smooth scaler with independent gain per channel with gain (in linear units) is taken from an input pin

Discussion

The Scaler Control module smoothly scales multichannel input data by a independent gain value. The first pin is the control pin with gain values. The size of the control pin (i.e. number of gain values) is same as number of channels on input data. So the module has 2 input pins and 1 output pin Internally, currentGain represents the instantaneous smoothed gain that is applied. currentGain exponentially approaches gain with a time constant equal to smoothingTime.

Type Definition

typedef struct _ModuleScalerNControl
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 smoothingTime;                        // Time constant of the smoothing process
    FLOAT32 smoothingCoeff;                       // Smoothing coefficient
    FLOAT32* currentGain;                         // Array of instantaneous linear gains, one per channel.
} ModuleScalerNControlClass;

Variables

Properties

Pins

Input Pins

Name: g

Description: linear gain to apply

...

Sample rate range: Unrestricted

Complex support: Real

Output Pins

Name: out

Description: Output signal

Data type: float

MATLAB Usage

File Name: scalern_control_module.m

...