Is there an error in the documentation for the CHIRP function using a

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Mackenzie - 2021-03-24T10:13:18+00:00
Question: Is there an error in the documentation for the CHIRP function using a

Is there an error in the  documentation for the CHIRP function using a logarithmic sweep in Signal Processing Toolbox 6.2.1 (R14SP1)? The instantaneous frequency sweep equation for the CHIRP function does not match what I observe in the output of the function in Signal Processing Toolbox 6.2.1 (R14SP1).  

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    • Expert Answer

    Profile picture of Neeta Dsouza Neeta Dsouza answered . 2025-11-20

    This change has been incorporated into the  documentation in Release 14 Service Pack 3 (R14SP3). For previous releases, read below for any additional information:
     
    This has been verified as an error within the documentation for Signal Processing Toolbox 6.2.1 (R14SP1) in the help for the CHIRP function. The documentation should read as follows:
     
    logarithmic specifies an instantaneous frequency sweep fi(t) given by
     
     fi(t) = f0 * (beta)^t

    wherer

     beta = (f1/f0) ^ (1/t1)


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