Undb20Fract32

Overview

Computes the undb20 using fixed-point math.

Discussion

Computes the undb20 function using fixed-point math. The input and output fixed-point data is in Q9.23 format and must be in the range [-138 +48] dB. The result is accurate to about 0.005 dB, or about 0.04%.

Module Pack

Standard

ClassID

classID = 213

Type Definition

typedef struct _ModuleUndb20Fract32
{
ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
} ModuleUndb20Fract32Class;

Pins

Input Pins


Name	in
Description	Input signal
Data type	fract32
Channel range	Unrestricted
Block size range	Unrestricted
Sample rate range	Unrestricted
Complex support	Real

Output Pins


Name	out
Description	Output signal
Data Type	fract32

Matlab Usage

File Name: undb20_fract32_module.m 
 M = undb20_fract32_module(NAME) 
 Creates an Audio Weaver module that converts from linear to dB units using 
 fixed-point arithmetic.  The input and output formats are assumed to be Q16.16. 
 Arguments: 
    NAME - name of the module.