Audio Post Production Knowledge Base

Today's Audio Term: Clash Clash is a peak distortion...

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Quintaphonic Stereo
Quintaphonic Stereo was a "one hit wonder" technology, with its sole motion picture release, Ken Russell's rock opera Tommy (1975).  Quintaphonic Stereo, as the name implies, is a five-channel stereo presentation that offers full bandwidth stereo surrounds. The speaker placement is

Amplitude
A sound wave moving through the atmosphere pushes air. As the air in front of the wave gets compressed, the air pressure goes up. The magnitude of change in the air pressure from that sound wave is its amplitude. The bigger its amplitude, the louder the wave will sound.

Decibel
A decibel (dB), named by Bell labs for it's founder, Alexander Graham Bell, is a logarithmic, relative scale for measuring power or amplitude, and it is used in a wide variety of disciplines. With respect to audio, it is a measurement of loudness. Human hearing has a dynamic range of about