Signal Source

Signal generator: generates a variety of waveforms.

Supports an output of type complex, float, int, and short

Parameters

(R): Run-time adjustable

Sample Rate (R)

Default value: samp_rate

Sample rate (fs) is the average number of samples obtained in one second. Its units are samples per second or hertz e.g. 48,000 sample rate is 48 kHz.

Waveform (R)

options: [Constant, Sine, Cosine, Square, Triangle, Saw Tooth]

For selection with a variable, the following values should be used:

 * Constant = 100
 * Sine = 101
 * Cosine = 102
 * Square = 103
 * Triangle = 104
 * Sawtooth = 105

Frequency (R)

Frequency of the waveform (default: 1000)

Amplitude (R)

Amplitude of the output (default: 1)

Offset (R)

Offset from zero (default: 0)

Initial Phase (Radians) (R)

Default: 0

Messages

The 'freq' message port has been deprecated in 3.9 in favor of the 'cmd' message port.

The 'cmd' message port accepts message pairs.

• 'freq' . float value
• 'ampl' . float value
• 'phase' . float value
• 'offset' . float value

Example Flowgraph

This flowgraph is for version 3.9+.

Example Output

Types of Waveforms:

Cosine (complex):

Constant:

Square:

Triangle:

Sawtooth:

Source Files

C++ files

[1]

Header files

[2]

Public header files

Base

Waveforms

Block definition

[3]