Differences between compression drivers

[pos]

If recall correctly Dr Geddes has interest in the phase relationship of the higher harmonics with the fundamentals? I do. This is where for instance if a diaphragm is ringing, the sound is no longer correlated with the fundamental and is just noise. This is what we see with the diamond surround drivers. The extra HF is not signal correlated, its energy seen in many frequency domain measurements is energy dispersed in the time domain.

Oh I see, interesting!
Is there any specific representation he is using for that?

[Robh3606]

Oh I see, interesting!
Is there any specific representation he is using for that?

Hello Pos Barry

I remember Wavelets used in the Truextent PDF. I was looking at CSDs and Wavelets to look for correlation's and differences.

https://www.audioheritage.org/vbulle...mat-Diaphragms

Here are the plots Ribbed Ti Smooth Ti Aluminum and Berylium

Also Joseph Crowe reviews

https://josephcrowe.com/blogs/news/1...er-test-review

Looking at Wavelets they seem to highlight the resonances better than the CSD's

Rob

[pos]

I remember Wavelets used in the Truextent PDF. I was looking at CSDs and Wavelets to look for correlation's and differences.

Hi Rob

Oh ok, I read Barry's comment wrong and thought he was talking about harmonic distortion. It appears it was just the HF itself.
Sorry for the confusion.