Version: current

Sweep

Description

The signal generator block sweep can generate logarithmic or linear types of sweeps. The sweeps are designed in the frequency domain according to Transfer-Function Measurements with Sweeps by Müller and Massarani.

Mx1

Output

The output is a single dimension Mx1 sweep.

Attributes

AttributeValue
NameSweep
Settings
Sample rate48000 Hz
Start0 s
Length1 s
Amplitude1 FS
TypeLogarithmic
Frequencies
Phase-in25 Hz
Start Sweep50 Hz
Stop Sweep16000 Hz
Phase-out20000 Hz
Outputs1

Name

Name specifies the name of the block.

Sample rate

Sample rate is the sample rate of the sweep.

Start

Start specifies when the sweep should start. If start is above 0 s the start is zeropadded accordingly. The start can be defined in either s, ms or samples.

Length

Length specifies the length of the sweep from start in either s, ms or samples.

Amplitude

Amplitude is the amplitude (Peak) of the sweep. As the signal is generated on the computer the unit is defined as FS.

Type

Type is the sweep type. It can either be logarithmic or linear.

Phase-in

Phase-in is the sweeps starting frequency. The sweep will not be white or pink in the frequency domain, dependent on type, at this frequency.

Start frequency

Start frequency is the frequency where the sweep starts being white or pink in the frequency domain.

Stop frequency

Stop frequency is the frequency where the sweeps stop being white or pink in the frequency domain.

Phase-out

Phase out is the sweeps stopping frequency.

Outputs

Outputs specifies the number of output(s) the block will have. Each output will output the same sweep.

Examples

A logarithmic sweep with default attributes

ProjectsDockA

ProjectsDockA

A logaritmic sweep in frequency domain with default attributes and 48000 point FFT. Because the sweep is designed in the frequency domain the sweep is very smooth without spikes.

ProjectsDockA

ProjectsDockA