Chladni patterns of a guitar top plate

[rick-slo]

Chladni patterns of a guitar top plate:



Rest of frequency images here: https://www.phys.unsw.edu.au/music/guitar/patterns.html

Does that relate to how to mike a guitar in some practical way to tailor the
sound?

[runamuck]

Originally Posted by rick-slo

Chladni patterns of a guitar top plate:



Rest of frequency images here: https://www.phys.unsw.edu.au/music/guitar/patterns.html

Does that relate to how to mike a guitar in some practical way to tailor the
sound?

The image you've shown is a top's response to one frequency. At other frequencies the pattern will be different.

Even if there was a positive correlation between a pattern and the best mic placement - and I don't believe there is, which pattern, or which frequency would be best?

[rick-slo]

Originally Posted by runamuck

The image you've shown is a top's response to one frequency. At other frequencies the pattern will be different.

Even if there was a positive correlation between a pattern and the best mic placement - and I don't believe there is, which pattern, or which frequency would be best?

Other patterns at other frequencies show in link I gave. Patterns will vary with different guitars but probably are mostly similar in nature.

[jim1960]

Originally Posted by rick-slo

Does that relate to how to mike a guitar in some practical way to tailor the sound?

I think you'd have to raise Jean-François Champollion from the dead to figure that out.

[rick-slo]

I mentioned it as one more reason for experimenting around with small changes in mike placements (especially if doing rather close mic'ing). Also when recording the possible effect of rather small changes
in body position can have.

Another interesting thing about the pictures is that they show that the guitar records to an extent out of phase with itself at a given mike position. Stereo mic'ing helps alleviate that to our ears. Various other sound sources (such as a voice, flute, etc.) sound like more like themselves recorded mono with a single mike.

[Gordon Currie]

I would think that you would need to measure the top when it is attached to a body (including the bracing) to ever come up with something usefully predictive for miking.

Essentially the difference between in vitro and in vivo.

[KevWind]

Wonder why it only shows patterns up to 618 hz Given there is a bunch of Acoustic Guitar above that

[rick-slo]

Originally Posted by KevWind

Wonder why it only shows patterns up to 618 hz Given there is a bunch of Acoustic Guitar above that

I have seen patterns up to about 1800 hertz. As the frequency gets up there the there are more patterns within patterns into smaller areas. For example see
https://www.woodringguitars.com/arti...ict-the-future

[KevWind]

Originally Posted by rick-slo

I have seen patterns up to about 1800 hertz. As the frequency gets up there the there are more patterns within patterns into smaller areas. For example see
https://www.woodringguitars.com/arti...ict-the-future

Interesting ......that would makes sense I assume since the wavelengths get shorter ?