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

Type Definition

CODE

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

CODE

 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.