MultiplexorSmoothed

Discussion

THIS MODULE IS DEPRECATED AND NOT RECOMMENDED FOR NEW DESIGNS. PLEASE USE THE MultiplexorV2 MODULE INSTEAD.

This module has a variable number of input pins and routes (or copies) one of these pins to the output. Each input pin must have the same number of channels and block size. The parameter .index specifies which of the input pins to route to the output. The parameter index is zero based and must lie in the range [0 NUMINPIN-1] where NUMINPIN is the number of input pins. If index is outside of the allowable range, it is clipped so that it lies in the proper range.

Note that this module has built in smoothing to prevent audible clicks. Use the multiplexor_module.m if you do not need smoothing.

Module Pack

Deprecated

ClassID

classID = 2031

Type Definition

typedef struct _ModuleMultiplexorSmoothed
{
ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
INT32 index;                                  // Specifies which input pin to route to the output. The index is zero based.
FLOAT32 smoothingTime;                        // Time constant of the smoothing process.
FLOAT32 smoothingCoeff;                       // Smoothing coefficient.
INT32 currentIndex;                           // This is the index that is currently being used and the module smoothly transitions to index.
FLOAT32 currentGain;                          // Instantaneous gain being applied. This is an internal variable used in the smoothing process.
} ModuleMultiplexorSmoothedClass;

Variables

Properties

Name	Type	Usage	isHidden	Default Value	Range	Units
index	int	parameter	0	0	0:2
smoothingTime	float	parameter	0	10	0:100	msec
smoothingCoeff	float	derived	1	0.002081	Unrestricted
currentIndex	int	parameter	1	0	Unrestricted
currentGain	float	state	1	1	Unrestricted

Pins

Input Pins


Name	in1
Description	Input signal
Data type	float
Channel range	Unrestricted
Block size range	Unrestricted
Sample rate range	Unrestricted
Complex support	Real


Name	in2
Description	Input signal
Data type	float
Channel range	Unrestricted
Block size range	Unrestricted
Sample rate range	Unrestricted
Complex support	Real


Name	in3
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: multiplexor_smoothed_module.m 
 M=multiplexor_smoothed_module(NAME, NUMINPIN) 
 Creates a multiplexor module with built-in smoothing.  The module 
 has multiple input pins and switches from one input to another. 
 Arguments: 
    NAME - name of the module. 
    NUMINPIN - number of input pins. 

 All input pins must have the same block size and number of channels. 

 Note, this version has built in smoothing with a progammable smoothing 
 time. During the transition period, the first signal is smoothly muted 
 and when a level of -100 dB is reached, the signals are switched and 
 then unmuted.  During the transition period there is a slight drop 
 out.  If you do not need smoothing, use multiplexor_module.m instead 
 which leads to a more efficient implementation.  If you don't want 
 any audible drop outs then use the multiplexor_fade_module.m