Sweep generator

The most commonly-used progressive input parameter is frequency varied over the standard audio bandwidth of 20 Hz to 20 kHz.

A glide sweep (or chirp) is a continuous signal in which the frequency increases or decreases logarithmically with time.

An advantage over the stepped sweep is that the signal duration can be reduced by the user without any loss of frequency resolution in the results.

Although the theory behind the glide sweep has been known for several decades, its use in audio measuring devices has only evolved over the past several years.

Since the settling time of different test objects cannot be predicted, the duration of a stepped sweep cannot be determined exactly in advance.