SOUND ART EXHIBIT- frequency test - Subtropics 20

[jfurman47]

The parallel wall cavity is not the only path sound travels : consider any glancing reflection that has the lucky path length. I bet these walls are parallel and perpendicular-- great for loops due to oblique reflections, for example consider diagonally opposite corners. Oscillation occurs when the amplitude and phase satisfy the Barkhausen criterion( phase~ n*2pi and amplitude ~1 in the loop.) The solution of such a boundry value problem makes my head spin.

[mariothepookster]

Pretty cool ... sound art is something I've always appreciated and enjoyed. My first experience with creating interesting sounds was us of a cheap 50 portable tape recorder and playing the inside of a baby grand piano. I was 16 years old. Wish I still had those tapes! ... nice work!

[jfurman47]

I can almost see the chaldni figures of the space.The most sound occurs at antinodes, the least at nodes. The phase changes rapidly in space, inversely as the wavelength. As an example, for velocity of sound very roughly 1100 ft/sec, one foot wavelength is 1100hz. Within that one foot distance, the relative phase changes 360 degrees. The microphone finds the antinodes with proper phase shift to support oscillation. The room owns its own modes, so not every resonant frequency is possible....

[PrivateBuckwheat]

@jfurman47 With only two sets of parallel walls, there are only two fundamental frequencies, and every other frequency that can be heard is just a harmonic of one of these two fundamentals, right? I think it's pretty neat hearing so much sound emerge from what initially appears to be a limited source.

[dbhhcho]

beautiful....... Alvin......

[dovalenano2]

silent hill soundtrack? : ) nice

[UMADYET]

just brilliant.

[h1sname1sunknown]

But this is not the work itself, am i right?

[dieg112]

its abstract art through sound. this guy is actually my listening and analysis teacher. he's insane haha but very profound.

[industrialborn]

although the video is simply illustrating the room, the man and the instruments i find it relaxing apart from the squeaks now and then...very interesting