LogSweep - Extract Pulses & Harmonic Distortion

[PhilActiveAudio]

Hi Uli,

I performed new measurements of my 3 drivers yesterday with adjusted frequency range. As I also wanted to analyse harmonic distortion, I copied LogSweep96_rec.wav and Inverse96.dbl files located in the ..\Documents\Acourate\LogSweep in the Workspace after each measurement (one Workspace per driver).

I think I found a small bug with the LogSweep - Extract Pulses & Harmonic Distortion function. It always displays Previous LogSweep Parameters related the very last LogSweep recording I did (the tweeter), but not the one of files located in the Workspace I am working on.

Below picture is taken while I was working on the Bass - Supravox with a recording range from 10 Hz to 2500 Hz.

Capture - Extract Pulses.jpg (61.36 KiB) Viewed 1382 times

Do you confirm?
However, results of the function look OK.

[UliBru]

I can confirm your obsewrvation. Acourate remembers the latest logsweep data for the calculation of harmonics.
It does not remember older logsweep recordings. So you have to calculate the distortions before taking a new measurement.
Another solution is to create a simple mono logsweep by Generate - Logsweep. But you have to remember the logsweep data anyway for this.

[PhilActiveAudio]

Thanks for your feedback Uli.

Fortunately, following Mitch procedure, I can use this function long time after the LogSweep recorder by proceeding with LogSweep Convolution using the additional saved files.