Overview

Smooth scaler in which the gain (in linear units) is taken from an input pin

Discussion

The Scaler Control module smoothly scales multichannel input data by a single gain value. The first pin is the control pin. The gain (in linear units) value is provided at the first sample of the first pin. So the module has N+1 number of input pins and N number of output pins 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 _ModuleScalerControl
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 smoothingTime;                        // Time constant of the smoothing process
    FLOAT32 currentGain;                          // Instantaneous gain applied by the module.
    FLOAT32 smoothingCoeff;                       // Smoothing coefficient
} ModuleScalerControlClass;

Variables

Properties

Pins

Input Pins

Name: g

Description: linear gain to apply

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Complex support: Real and Complex

Output Pins

Name: out1

Description: audio output

Data type: float

MATLAB Usage

File Name: scaler_control_module.m

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