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  2. Beat (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Beat_(acoustics)

    Time duration of 10 seconds Binaural Beats Base tone 200 Hz, beat frequency from 7 Hz to 12.9 Hz. Time duration of 9 minutes. Time duration of 9 minutes. A binaural beat is an auditory illusion perceived when two different pure-tone sine waves , with a less-than 40 Hz or so difference between them, are presented to a listener dichotically (one ...

  3. Acoustic resonance - Wikipedia

    en.wikipedia.org/wiki/Acoustic_resonance

    The term "acoustic resonance" is sometimes used to narrow mechanical resonanceto the frequency range of human hearing, but since acousticsis defined in general terms concerning vibrational waves in matter,[1]acoustic resonance can occur at frequencies outside the range of human hearing.

  4. Helmholtz resonance - Wikipedia

    en.wikipedia.org/wiki/Helmholtz_resonance

    The size and shape of these components are crucial in determining the resonant frequency, which is the frequency at which the system naturally oscillates. In the context of acoustics, Helmholtz resonance is instrumental in the design and analysis of musical instruments, architectural acoustics, and sound engineering. It is also utilized in ...

  5. Stokes's law of sound attenuation - Wikipedia

    en.wikipedia.org/wiki/Stokes's_law_of_sound...

    In acoustics, Stokes's law of sound attenuation is a formula for the attenuation of sound in a Newtonian fluid, such as water or air, due to the fluid's viscosity.It states that the amplitude of a plane wave decreases exponentially with distance traveled, at a rate α given by = where η is the dynamic viscosity coefficient of the fluid, ω is the sound's angular frequency, ρ is the fluid ...

  6. Underwater acoustics - Wikipedia

    en.wikipedia.org/wiki/Underwater_acoustics

    Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries. The water may be in the ocean, a lake, a river or a tank. Typical frequencies associated with underwater acoustics are between 10 ...

  7. Violin acoustics - Wikipedia

    en.wikipedia.org/wiki/Violin_acoustics

    Violin acoustics is an area of study within musical acoustics concerned with how the sound of a violin is created as the result of interactions between its many parts. These acoustic qualities are similar to those of other members of the violin family, such as the viola . The energy of a vibrating string is transmitted through the bridge to the ...

  8. Acoustic wave equation - Wikipedia

    en.wikipedia.org/wiki/Acoustic_wave_equation

    Acoustic wave equation. In physics, the acoustic wave equation is a second-order partial differential equation that governs the propagation of acoustic waves through a material medium resp. a standing wavefield. The equation describes the evolution of acoustic pressure p or particle velocity u as a function of position x and time t.

  9. List of equations in wave theory - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in_wave...

    Acoustic beat frequency f 1, f 2 = frequencies of two waves (nearly equal amplitudes) ... Wave functions for sound Acoustic beats = ...