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PCScope

Modules:

SigGen

SoundImp

SoundExp

Plot

Meas

Stats

FileImp

TextImp

TextExp

Filter

FFT

DspWnd

Visa

Arithmetic

Plugins:

CodeEditor

SchEditor

Wizards:

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Help:

Getting Started

Examples:

PC Oscilloscope

Signal Generator

Amp. Modulation

Freq. Modulation

Phase Modulation

AM, FM & PM

PAM

PWM

Text Imp. & Exp.

Filter: FIR & IIR Digital Filters

Programming Interface

Settings

Filter Type

Syntax	:filtertype
Type	:string
Unit	:n/a
Default	:"FIR"

Either "FIR" or "IIR"

Delimiter

Syntax	:delimiter
Type	:string
Unit	:n/a
Default	:","

Specify "tab", "line", "space", or your own, for example ",".

Filter Bypass Mode

Syntax	:bypass
Type	:long
Unit	:n/a
Default	:0

0=OFF, 1=ON

Continuous Mode

Syntax	:continuous
Type	:long
Unit	:n/a
Default	:0

0=OFF, 1=ON

FIR Filter Coefficients

Syntax	:coeffs
Type	:string
Unit	:n/a
Default	:"1"

List of coefficients separated by commas or user specified delimiter, in the order a₀...a_n.

IIR Filter X-Coefficients

Syntax	:coeffs
Type	:string
Unit	:n/a
Default	:"1"

List of X-coefficients separated by commas or user specified delimiter, in the order a₀...a_n.

IIR Filter Y-Coefficients

Syntax	:y.coeffs
Type	:string
Unit	:n/a
Default	:""

List of Y-coefficients separated by commas or user specified delimiter, in the order b₁...b_n.

Filter Output Gain

Syntax	:gain
Type	:double
Unit	:n/a
Default	:1

Floating point value, >0

Number of Stages

Syntax	:stages.count
Type	:long
Unit	:n/a
Default	:1

Integer value, greater than or equal to 1

Stage Output Gain

Syntax	:stages.gain
Type	:double
Unit	:n/a
Default	:1

Floating point value, >0

Decimation Factor

Syntax	:decimation
Type	:long
Unit	:n/a
Default	:1

Integer value, greater than or equal to 1

Functions

Reset State

Resets the filter state when in continuous mode.

void reset()

Returns

:None

Window Size

Changes the width and height of the GUI window.

void gui.size(float width, float height)

Returns	:None
width	:Window width in pixels
height	:Window height in pixels

Window Location

Moves GUI window to the specified location and optionally changes size.

void gui.move(float left, float top, float width, float height)

Returns	:None
left	:Horizontal coordinate for the left edge of the window in pixels.
top	:Vertical coordinate for the top edge of the window in pixels.
width	:Optional. Window width in pixels
height	:Optional. Window height in pixels

Ports

Data In

Syntax	:src
Type	:Input

Data stream to be filtered.

Data Out

Syntax	:out
Type	:Output

Filtered data out.

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