Audio Beam loudspeaker

cha11enge · 15th January 2008, 03:43 PM

Hi,

ANyone familiar with audio beam speaker? particularly in measurements of audio beam loud speaker....

lets discuss on this... it is the coming hot stuff...

ShinOBIWAN · 15th January 2008, 04:32 PM

Are you talking about this sort of stuff?

http://www.holosonics.com/?g&gclid=C...FQ5OQgodEHDQ2A

As far as know its an offshoot of US military technology.

Svante · 15th January 2008, 09:25 PM

Sennheiser has a product like this too.

Rather a smart idea, it uses ultrasound and the nonlinearity of air at extreme sound pressure levels (~140 dB). One should not expect extreme directivity in ordinary sized rooms, though, the beam is still reflected on the walls and will hit you eventually.

cha11enge · 16th January 2008, 06:49 AM

Hi, yeah... I'm currently working on the audio beam loudspeakers now. I also have the commerical product from ATC(H460). Intending to carry out some measurements on the sound parameters, freq response and etc on the H460..

Any idea which software is good for recording? particularly on user friendly and robust controls:

1. adobe audtion
2.NI lab view
3. win MLS.

Im currently leaning towards labview...any opinions?

soongsc · 12:18 AM

I would be interested in seeing some FR, CSD, and distortion plots of those.
Looks like "class D speaker".

Pano · 14th October 2009, 01:25 AM

Quote:

Originally Posted by soongsc

Looks like "class D speaker".

LOL! Yeah, kinda, sorta. That's what got me interested in Class-D amps back in the late 80s. Wanted to drive an array like that. I never could make it work. =(

soongsc · 14th October 2009, 02:04 AM

Quote:

Originally Posted by panomaniac

LOL! Yeah, kinda, sorta. That's what got me interested in Class-D amps back in the late 80s. Wanted to drive an array like that. I never could make it work. =(

It seems like the driver needs to be an ultrasonic driver.

cbdb · 14th October 2009, 04:55 AM

Why do you want a narrow beam? If this is for listening to music at home your going in the wrong direction.

jzagaja · 14th October 2009, 10:03 AM

Ultrasonic beam speaker.

soongsc · 14th October 2009, 12:20 PM

Quote:

Originally Posted by jzagaja

Ultrasonic beam speaker.

Are you sure it actually beams? Doen't look like it from the response.

15th January 2008, 03:43 PM	#1
cha11enge diyAudio Member Join Date: Jan 2008	Audio Beam loudspeaker Hi, ANyone familiar with audio beam speaker? particularly in measurements of audio beam loud speaker.... lets discuss on this... it is the coming hot stuff...

15th January 2008, 09:25 PM	#3
Svante diyAudio Member Join Date: Feb 2004 Location: Stockholm	Sennheiser has a product like this too. Rather a smart idea, it uses ultrasound and the nonlinearity of air at extreme sound pressure levels (~140 dB). One should not expect extreme directivity in ordinary sized rooms, though, the beam is still reflected on the walls and will hit you eventually. __________________ Simulate loudspeakers: Basta! Simulate the baffle step: The Edge

14th October 2009, 12:11 AM	#5
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	I would be interested in seeing some FR, CSD, and distortion plots of those. Looks like "class D speaker". __________________ Hear the real thing! Last edited by soongsc; 14th October 2009 at 12:18 AM.

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15th January 2008, 04:32 PM	#2
ShinOBIWAN diyAudio Member Join Date: Feb 2004 Location: UK	Are you talking about this sort of stuff? http://www.holosonics.com/?g&gclid=C...FQ5OQgodEHDQ2A As far as know its an offshoot of US military technology.

16th January 2008, 06:49 AM	#4
cha11enge diyAudio Member Join Date: Jan 2008	Hi, yeah... I'm currently working on the audio beam loudspeakers now. I also have the commerical product from ATC(H460). Intending to carry out some measurements on the sound parameters, freq response and etc on the H460.. Any idea which software is good for recording? particularly on user friendly and robust controls: 1. adobe audtion 2.NI lab view 3. win MLS. Im currently leaning towards labview...any opinions?

14th October 2009, 04:55 AM	#8
cbdb diyAudio Member Join Date: Oct 2008 Location: Vancouver	Why do you want a narrow beam? If this is for listening to music at home your going in the wrong direction.

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