Yes, it is possible to use lasers to measure speaker directivity / dispersion!

Nyal Mellor

Industry Expert
Jul 14, 2010
590
4
330
SF Bay Area, CA, USA
It's been just over a year since the UK's National Physical Laboratory first released information on their innovative laser-based acoustical mapping technique.

Thanks to UK loudspeaker company PMC we now have a real life use case for this technology - using lasers to study the dispersion characteristics of loudspeakers.

Please read :)

Very very cool stuff!
 

treitz3

Super Moderator
Staff member
Dec 25, 2011
5,455
949
1,290
The tube lair in beautiful Rock Hill, SC
Hello, Nyal. That is very cool indeed. How far away from the speaker can the tools pick up on the bending of the light? I'm curious as to how low a frequency this technology will allow them to measure. Nice post, BTW.

Tom
 

JackD201

WBF Founding Member
Apr 20, 2010
12,304
1,420
1,820
Manila, Philippines
Awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 

Nyal Mellor

Industry Expert
Jul 14, 2010
590
4
330
SF Bay Area, CA, USA
Hello, Nyal. That is very cool indeed. How far away from the speaker can the tools pick up on the bending of the light? I'm curious as to how low a frequency this technology will allow them to measure. Nice post, BTW.

Tom

I am not sure on the distance. As far as I know it should work from 1Hz: physics is physics; though the plate used to scatter back the light would need to be VERY big to see anything useful ;)
 

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification. Founded in 2010 What’s Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals, we enjoy learning about new things and meeting new people, and participating in spirited debates.

Quick Navigation

User Menu

Steve Williams
Site Founder | Site Owner | Administrator
Ron Resnick
Site Co-Owner | Administrator
Julian (The Fixer)
Website Build | Marketing Managersing