Acoustic beamsteering with speakers and Arduino

[@martincremer1422]

Absolutely brilliant work! I love the use of a string and protractor for detection. It demonstrates the kind of practical ingenuity employed by great scientists throughout history working with contained resources.

[@masonjohn4433]

Thanks for showing the actual data and not just saying "It worked! Make sure to like and subscribe..." Very cool video!

[@lolo-om9rs]

Just keep posting I promise you this channel will get big some day

[@hubercats]

Great work!

[@enricoubaldino5856]

is it possible to do the same reasoning with microphones? Use beamforming to choose a privileged direction from which to listen and amplify.

[@CharlesGrassin]

Yes, transmission and reception are completely equivalent. With software shifting and addition of the waveforms, it should be possible to do both beamforming and beamsteering. That is actually a great idea for a future project...

[@sullivanzheng9586]

@@CharlesGrassin I am also trying to build a microphone array to amplify faraway sound signal from a specific direction. But different from sound transmission, the computing power required for such microphone array seems dauting. The entire signal chain includes high sampling rate ADCs to sample sound signal from each microphone synchronously with the same clock signal, and collect the data to a central MCU for data processing (digital phase delay etc.) . Data collection and transmission seems way beyond what AVR based arduino can do, or even beyond the capacity of an Raspberry Pi. Or we may choose to go for a pure analog solution using analog phase delay component to reduce computing power, but design and debugging seem to a big project. Any thoughs?

[@williamwright9681]

Brilliant

[@arizona111]

Very nice

[@linkmaster959]

nice

[@arturdubois8982]

nice video!

[@rca168]

Did you try to noise-normalize?

[@jomfawad9255]

If i put this on my forearm it will detect muscle contractions so i can control bionic prosthetic hand?