Array of underwater transducers for sound massage

[lost_in_space]

hello,

since a while my mind is caught by an idea. This idea is concerned with underwater sound massage system.

For this purpose i would like to build an array of underwater sound transducers, which can all be steered individually (to do a coarse beam forming).


However, since i am not an engineer it is difficult for me to evaluate which transducers are appropriate for the application i have in mind and would be very greatful if someone here could comment on my guesses:

I need a broadband transducer that is capable to produce sound waves in a very broad range (200 Hz - 30khz) and with sound intensity around 60 db. It may be also possible to use different transducers for low and high frequencies. However, in order to do beamforming at a frequency of 30kHz the distance of the transducers must be around 5 cm. thus the transducer sizes must be quite small. (the most appropriate transducers i found were from the company benthowave, can anyone comment on this)

I would be very greatful if anyone could comment on the spezifications i have in mind.




best regards,

lost_in_space

 

[anorlunda]

High frequencies tend to dissipate, both in the water and in the body. Therefore, high frequency massage is a bit of an oxymoron. So instead of 200-30K Hz, I would suggest 0.2-3 Hz.

Those frequencies are best though of as pistons displacing water, not as sonic transducers.

 

[paxaran]

hello,

since a while my mind is caught by an idea. This idea is concerned with underwater sound massage system.

For this purpose i would like to build an array of underwater sound transducers, which can all be steered individually (to do a coarse beam forming).However, since i am not an engineer it is difficult for me to evaluate which transducers are appropriate for the application i have in mind and would be very greatful if someone here could comment on my guesses:

I need a broadband transducer that is capable to produce sound waves in a very broad range (200 Hz - 30khz) and with sound intensity around 60 db. It may be also possible to use different transducers for low and high frequencies. However, in order to do beamforming at a frequency of 30kHz the distance of the transducers must be around 5 cm. thus the transducer sizes must be quite small. (the most appropriate transducers i found were from the company benthowave, can anyone comment on this)

I would be very greatful if anyone could comment on the spezifications i have in mind.

best regards,

lost_in_space

Hi there. Did you ever get anywhere with you underwater acoustic sound array?

 

[tech99]

Of course, these arrays are used for sonar for military and also for fishfinders etc.
Poor creatures like whales have to endure our activities.

 

[paxaran]

Of course, these arrays are used for sonar for military and also for fishfinders etc.
Poor creatures like whales have to endure our activities.

I know they exist, I guess I was just wondering if lost_in_space ever got his project off the ground. As for the animals, I agree with you. It must be worse than Times Square down there as for noise.