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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