guitars

I'd just use my ears tbh. That sounds like another chance to inject some more snake oil into our gullible guitar brains lol.

For building guitars, yea that's cool af.

For a buyer or player? Complete bs probably used to inflate prices.

For someone researching guitar manufacture? Potentially interesting.

Clever idea but probably really a niche case - but I could see it making its way into the marketing for when e.g. Gibson puts out high end replicas of their old 60s guitars

Pretty cool from a manufacturing standpoint and an interesting way to 'archive' historic guitars. But if I see any manufacturer use this as a marketing thing to tell people guitar Y sounds exactly like guitar X, I will be sceptical. The amount of variables is just to large to earnestly guarantee it based on the body alone. It will make a ton of cash for Gibson though.

I don’t know how that might impact my buying decisions, but sounds frickin cool.

Not necessarily valuable in practice. Much of your town will come from technique/string choice and a sign wave sweep won't account for that. Also does not take into account recording/micing techniques .

If you are comparing two frequency response graphs, how do you decide which is "better"? It's totally subjective and depends on what sound you prefer. And there's much more to choosing a guitar than that. For example, the action and quality of the fretboard is a major consideration.

related article about measuring violins with CT scans: https://arstechnica.com/science/2021/09/study-confirms-superior-sound-of-a-stradivari-is-due-to-the-varnish/