Undb20Approx

Overview

Converts from decibels to linear units

Discussion

Converts from decibels to linear units using a fast polynomial approximation. The maximum error in the result is 3.228661e-002 dB

Module Pack

Standard

ClassID

classID = 77

Type Definition

typedef struct _ModuleUndb20Approx
{
ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
} ModuleUndb20ApproxClass;

Pins

Input Pins


Name	in
Description	Input signal
Data type	float
Channel range	Unrestricted
Block size range	Unrestricted
Sample rate range	Unrestricted
Complex support	Real

Output Pins


Name	out
Description	Output signal
Data Type	float

Matlab Usage

File Name: undb20_approx_module.m 
 M=undb20_approx_module(NAME) 
 Creates an Audio Weaver module that computes the function 10^(x/20) 
 using a fast polynomial approximation  This converts from decibels  
 to linear units. 
    NAME - name of the module.