getGroupDelays

Get group delays

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Syntax

groupDelays = getGroupDelays(obj)
[groupDelays,centerFrequencies] = getGroupDelays(obj)

Description

groupDelays = getGroupDelays(obj) returns the group delay of each filter at its center frequency.

example

[groupDelays,centerFrequencies] = getGroupDelays(obj) returns the center frequency of each filter.

Examples

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Open Live Script

Create a default octaveFilterBank object. Call getGroupDelays to get the group delay of each octave filter at its center frequency.

octFiltBank = octaveFilterBank;
[gd,cf] = getGroupDelays(octFiltBank);

Plot the group delay as a function of filter center frequency.

loglog(cf,gd,'k-',cf,gd,'bo')
grid on
xlabel('Frequency (Hz)')
ylabel('Delay (samples)')
xticks(round(cf))
yticks(round(fliplr(gd)))

Figure contains an axes object. The axes object with xlabel Frequency (Hz), ylabel Delay (samples) contains 2 objects of type line. One or more of the lines displays its values using only markers

Input Arguments

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Object to get group delays from, specified as an object of octaveFilterBank.

Output Arguments

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Group delay of each filter at its center frequency in samples, returned as a row vector.

Center frequencies of filters designed by obj in Hz, returned as a row vector.

Data Types: double | single

Version History

Introduced in R2019a

See Also