IN GREEK mythology, Echo was a mountain nymph who lost her voice and was condemned to repeat only the words of others. Now science is poised to silence the sprite completely. A group of physicists, ...

So far we have only considered sound in isolation and we have seen that sound has velocity, frequency, wavelength and reduces in intensity in proportion to the square of the distance from the source.

For more than 50 years, scientists have theorized that a special kind of reflection known as time reflections have existed in the realm of quantum mechanics. However, proving the existence of this ...

So far in this book we have considered acoustics and psychoacoustics as separate topics. However, real applications often require the combination of the two because although the psychoacoustics tells ...

No, I am not sitting in my home theater at 6:00 a.m., ruminating about how the pattern on the wall from the lighting sconce looks different from the back row. This article is about sound reflections.

The anechoic chamber where sound reflections are minimized is seen at Kajima Technical Research Institute's Nishichofu Complex in Chofu, Tokyo, on Jan. 16, 2025. A measuring device is attached to the ...