Acoustics and beyond

A blog about Acoustics, Engineering and Audio

[ithelpstodream]

[ifunanyaa]

[resonance-chamber]

This phenomena occurs when you have surfaces arranged to face each other with low acoustic absorption. When these surfaces are far enough apart, the sound of each reflection becomes audible, forming this strange, layered effect that is usually seen as undesirable when designing acoustic spaces

The video through this link shows that, while the man is speaking, the reflections culminate in a reverb-like effect to the listener, but when the man claps (an impulse) an echo is perceived.

The first reflection after the impulse must arrive more than 1/15 of a second after the wavefront of the impulse for there to be a perceived echo, and given that the speed of sound in air is around 343 metres per second, the space in this hall must have reflective surfaces facing each other with at least 17m of distance in between.

Interestingly, there are some spots at my university (The University of Salford) where a strong flutter echo can be heard, under the canopy of a large glass building.

[resonance-chamber]

"New" blog

I set this blog up over a year ago to begin keeping interesting pieces of information on Acoustics, Engineering and Audio, but at the time my academic exposure to these subjects was very limited.

I have now started my degree in Audio Acoustics, and will finally be able to put out some content for this blog! Expect things to be basic now, but I will hopefully delve into more interesting topics over time as I learn more about this brilliant subject