How to get the size of the measured impulse response to be a power of two (2^N)?

Some other software demands that the size of the impulse response is a power of two.

To make an impulse response of this size in WinMLS you must go to Measurement->Settings... and set the Max. decay time + system delay [s] since this determines the length of the impulse response.

The length in seconds and that is found by the formula

#seconds = #samples / Fs

Using the formula above, if the sampling frequency Fs equals to 48000 and the #samples you want is 2¹⁴ then the #seconds is 0.34133 as shown in the figure below.

If the number of samples you want is 2¹⁴-1 then you must use the formula above and type in the number (2¹⁴-1)/48000 = 0.34131.

Note: If the check box  is checked the size should always be a power of two (you find the check box by clicking the  button in Measurement->Settings...).

Note: If you are using the Impulse/Frequency Response Advanced mode shown in the figure below you can specify the length of the impulse response using the  check box.