Resonance chamber
Encyclopedia
A resonance chamber uses resonance
to amplify sound
. The chamber has interior surfaces which reflect an acoustic
wave. When a wave enters the chamber, it bounces back and forth within the chamber with low loss (See standing wave
). As more wave energy enters the chamber, it combines with and reinforces the standing wave, increasing its intensity
.
Resonance
In physics, resonance is the tendency of a system to oscillate at a greater amplitude at some frequencies than at others. These are known as the system's resonant frequencies...
to amplify sound
Sound
Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.-Propagation of...
. The chamber has interior surfaces which reflect an acoustic
Acoustics
Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics...
wave. When a wave enters the chamber, it bounces back and forth within the chamber with low loss (See standing wave
Standing wave
In physics, a standing wave – also known as a stationary wave – is a wave that remains in a constant position.This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling...
). As more wave energy enters the chamber, it combines with and reinforces the standing wave, increasing its intensity
Amplitude
Amplitude is the magnitude of change in the oscillating variable with each oscillation within an oscillating system. For example, sound waves in air are oscillations in atmospheric pressure and their amplitudes are proportional to the change in pressure during one oscillation...
.
See also
- Cavity resonator (electrical version)
- ResonanceResonanceIn physics, resonance is the tendency of a system to oscillate at a greater amplitude at some frequencies than at others. These are known as the system's resonant frequencies...
- Sounding box
- WaveguideWaveguideA waveguide is a structure which guides waves, such as electromagnetic waves or sound waves. There are different types of waveguides for each type of wave...