Tartini Tones and Under/Overtones


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21 minutes ago, VicM said:

What then was this : "Right. For an idiot. "  ?

Not decent calling David Burgess an idiot and then apologized like nothing happened.

Easy there, Vic. Much as I appreciate the thought, I think John and I are both OK. :)

This was mild, compared to some of the go-arounds some people here have had in the past. :o

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26 minutes ago, David Burgess said:

Easy there, Vic. Much as I appreciate the thought, I think John and I are both OK. :)

This was mild, compared to some of the go-arounds some people here have had in the past. :o

Thank you David. You really are too kind.

To be honest I don't know what came over me. Some kind of weird episode of craziness.

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21 hours ago, David Burgess said:

Here's one example of a "waveform" without amplitude. It looks like this:

________________________________________________________________

No sound.

Not only one of us can cherry-pick our definitions. ;)

The way I view this is from an electronics viewpoint. Amplitude without change is DC voltage, and does not contain any wave form (alternating current) component.

A flat line essentially amounts to atmospheric pressure, but because our ears equalize to this on both sides of the eardrum, it can be considered a zero baseline. In order to qualify as a wave, there has to be some sort of change in the amplitude vs time domain.

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3 hours ago, JohnCockburn said:

Thank you David. You really are too kind.

To be honest I don't know what came over me. Some kind of weird episode of craziness.

thank god you didn't happen upon an unsuspecting pile of bricks, just....sitting there, you might have been tempted to pick one up and, I dunno, throw it through a shop window and take some tennis shoes.

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15 minutes ago, jezzupe said:

thank god you didn't happen upon an unsuspecting pile of bricks, just....sitting there, you might have been tempted to pick one up and, I dunno, throw it through a shop window and take some tennis shoes.

What could be more important than fashion sneakers? :D

Tartini footwear might be winner... Has his copyright expired?

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6 minutes ago, David Burgess said:

What could be more important than fashion sneakers? :D

why, a matching rolex of course :lol: well I just hope no one got the bright idea to go window shopping for violins at anyone we knows shop

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15 minutes ago, jezzupe said:

why, a matching rolex of course :lol: well I just hope no one got the bright idea to go window shopping for violins at anyone we knows shop

There has been no rioting and plundering in Ann Arbor, so far. What a buncha sissies around here! :lol:

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2 minutes ago, David Burgess said:

There has been no rioting and plundering in Ann Arbor, so far. What a buncha sissies! :lol:

I'm sure they think making it through winter is hard enough , I guess the brickman drove right past you on the way to Detroit, oh well I'm sure you guys will have better luck next time. :)

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  • 8 months later...

In playing double stops on the cello, if perfectly in tune, my tuner app will display the exact Hz of the Tartini tone exactly when I stop the sound. Therefore my tuner heard the note. The tuner doesn’t think it’s a psycho-acustic or illusory phenomenon. The Tartini notes for each interval can be found in Cello Mind by Jensen and Chung.

On 5/30/2020 at 3:05 PM, David Burgess said:

Which to me is a little weird, since TT tones can be mathematically calculated, and the calculations correspond very well with ear/brain impressions.

 

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On 5/31/2020 at 6:25 AM, JohnCockburn said:

no, my explanation is the correct one. Beats and combination tones have a different origin, and the former don't require nonlinearity. You can never see beats in an FFT because they are just an amplitude fluctuation.

We can start throwing equations around if you like :P

What is frequency, but a repetitive change in amplitude over time?

Edit: Sorry, I thought this was a recent post until I looked closer at the date.

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FFT is designed to detect independent components.  I there are two fundamental tones, that is what FFT will find. 

Your ear also hears the sum of those two fundamental tones, which is often perceived as "beats'.

But mathematically FFT is incapable of hearing the beats.

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