also it seems to be suggesting it can project sounds to precise points in
space, at different distances from the speaker - in a way that someone
breaking the beam wouldnt necessarily hear it (as they do in normal
directional speaker sin museums etc) - thats the bit Im skeptical about....

On 8 March 2018 at 00:24, Augustine Leudar <augustineleu...@gmail.com>
wrote:

> Hi Charlie !
> Im aware of course of directional loudspeakers that use ultrasonic beating
> - but I understood this is able to position sounds in 3D space - without
> physically having to point the speaker - if so that would be quite a cool
> advance,
> best
> Gus
>
> On 7 March 2018 at 23:51, Charlie Richmond <charlie....@gmail.com> wrote:
>
>> These have been around for a long time and they do work but there is a
>> sharp sweet spot and no bass at all of course...  and it's really only
>> stereo for the one person they are focused on but if the 3d imaging of the
>> original source is reasonable then the one listener will definitely hear
>> the 3d imaging that one can hear with two regular loudspeakers when they
>> are precisely in the originally prescribed sweet spot.  Therefore, you can
>> say that they technically do what they say they can do but that is less
>> than regular a good stereo speaker pair.  The main feature is that the
>> ultrasonic beating that the two drivers do which produces the audible
>> sound
>> at the crosspoint is only audible for the one listener exactly in the
>> crosspoint and not audible to anyone else in the vicinity, which is a good
>> trick when it is desired.
>>
>> Charlie
>>
>> Charlie
>>
>> On Wed, Mar 7, 2018 at 2:47 PM, Augustine Leudar <
>> augustineleu...@gmail.com>
>> wrote:
>>
>> > Im desperately trying not to be skeptical because I really really want
>> this
>> > to be true - has anyone had a chance to test one out ?
>> >
>> > http://www.electronicbeats.net/the-feed/ultrasonic-
>> > speaker-emits-3d-spatial-sound/
>> >
>> > ?
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>>
>>
>> --
>> * Charlie Richmond - http://www.RichmondSoundDesign.com
>> <http://www.richmondsounddesign.com/>
>> * Viber: +16047159441 Skype, LinkedIn & Twitter: charlierichmond
>> * facebook: charlie.richmond
>> * facebook.com/pages/Richmond-Sound-Design-Ltd/130195960832
>> <https://www.facebook.com/pages/Richmond-Sound-Design-Ltd/130195960832>
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>
>
>
> --
> Dr. Augustine Leudar
> Artistic Director Magik Door LTD
> Company Number : NI635217
> Registered 63 Ballycoan rd,
> Belfast BT88LL
>
>


-- 
Dr. Augustine Leudar
Artistic Director Magik Door LTD
Company Number : NI635217
Registered 63 Ballycoan rd,
Belfast BT88LL
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