Generates an array containing a chirp pattern.


icon

Inputs/Outputs

  • ci32.png samples —

    samples is the number of samples of the Chirp Pattern. The default is 128.

  • cdbl.png amplitude —

    amplitude is the amplitude of Chirp Pattern. The default is 1.0.

  • cdbl.png f1 —

    f1 is the beginning frequency of Chirp Pattern in normalized units of cycles/sample.

  • cdbl.png f2 —

    f2 is the ending frequency of Chirp Pattern in normalized units of cycles/sample.

  • i1ddbl.png Chirp Pattern —

    Chirp Pattern is a signal with frequency ramping from f1*fs to f2*fs, where fs is the sampling rate.

  • ii32.png error —

    error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

    • If the sequence Y represents Chirp Pattern, the Chirp Pattern VI obtains the elements of Y using the following equation:

    yi = A*sin((0.5*a*i + b)*i)

    for i = 0, 1, 2, …, n – 1

    where A is amplitude,

    a = 2π(f2 – f1)/n, b = 2πf1, f1 is the beginning frequency in normalized units of cycles/sample, f2 is the ending frequency in normalized units of cycles/sample, n is the number of samples.