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.

Features EBE's long time narrator, James Brill! The film discusses the evolution of educational sound films, starting from early silent films to the introduction of sound, highlighting the ...

Classroom sound amplification systems can make a difference in academic performance as well as the number of referrals to special education programs. There are many possible interventions that can ...

“SOME Photographic Aspects of Sound Recording” was the subject of the Sir Henry Trueman Wood Memorial Lecture, which was given by Dr. C, E. Kenneth Mees, of the Eastman Kodak Company, at the Royal ...