I split my response to @Ya’akov in “Line Array Directional Sound”. Ya’akov directed a response to me in that response.
My application requires projecting sound to an approximately 25 sq ft area in which up to 5-6 people may occupy (there will be two such areas adjacent to each other). Everyone within this space must hear the sound. There will be a dozen or so such areas all contained within a larger 2,500 sq.ft. open space. When a person is in one of the many 25 sq.ft. spaces, he should hear the sound for that area. He should not hear anything from the other spaces.
I have contacted Holosonics with regard to this application, met with the engineers and got a product demo. I have also negotiated a significant discount.
But even then, their product for my application (20-24 speakers) is a significant investment. Most of us know that sometimes we want good and inexpensive, but that’s not always possible.
Ya’akov posted the following video.
The author says the audio quality is due to his smartphone (as anyone whose tried to record a live concert can attest). My audio will primarily be voice, with occasional music. Will the quality be good enough so listeners can understand the voices?
Secondly, there is a section of the video where it shows a nearby person hearing the voice “bounced” off his neighbor. First, the perception of direction is important and this could affect quality. Second, when there are 5-6 people under each speaker, won’t sound be a muddy perception of multiple reflections. And where there are two adjacent “speakers”, wouldn’t these reflections ruin the direction perceived?
And I haven’t asked about volume…
My application requires projecting sound to an approximately 25 sq ft area in which up to 5-6 people may occupy (there will be two such areas adjacent to each other). Everyone within this space must hear the sound. There will be a dozen or so such areas all contained within a larger 2,500 sq.ft. open space. When a person is in one of the many 25 sq.ft. spaces, he should hear the sound for that area. He should not hear anything from the other spaces.
I have contacted Holosonics with regard to this application, met with the engineers and got a product demo. I have also negotiated a significant discount.
But even then, their product for my application (20-24 speakers) is a significant investment. Most of us know that sometimes we want good and inexpensive, but that’s not always possible.
Ya’akov posted the following video.
I have two questions, Ya’akov (and others).I forgot about the possibility of parametric speakers using ultrasonics. I also think it is possible to combine a line array and para metric speaker techniques to create an electronically steerable array since an ordinary parametric speaker has a fixed direction. The video below is just one of many resources for home builds.
@djsfantasi is this something like what you were looking for?
The author says the audio quality is due to his smartphone (as anyone whose tried to record a live concert can attest). My audio will primarily be voice, with occasional music. Will the quality be good enough so listeners can understand the voices?
Secondly, there is a section of the video where it shows a nearby person hearing the voice “bounced” off his neighbor. First, the perception of direction is important and this could affect quality. Second, when there are 5-6 people under each speaker, won’t sound be a muddy perception of multiple reflections. And where there are two adjacent “speakers”, wouldn’t these reflections ruin the direction perceived?
And I haven’t asked about volume…