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As most people are familiar, the sound pressures we study in acoustics are measured in decibels (dB). Decibels are measured in a logarithmic scale, based upon a reference pressure level, of usually 20 micro Pascals (or 2x10e-5 Pa). By using the equation dB=10*log(pressure/2x10e-5), we can accurately translate sound levels into decibels. Another unit, more often used in reference to sound power levels, as opposed to sound pressure levels, is the bel. One bel is equivalent to 10 decibels. |
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As most people are familiar, the sound pressures we study in acoustics are measured in decibels (dB). Decibels are measured in a logarithmic scale, based upon a reference pressure level, of usually 20 micro Pascals (or 2x10e-5 Pa). By using the equation dB=10*log(pressure/2x10e-5)^2, we can accurately translate sound levels into decibels. Another unit, more often used in reference to sound power levels, as opposed to sound pressure levels, is the bel. One bel is equivalent to 10 decibels. |
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Subfields and related fields of acoustics: * [Structural acoustics]? * [Noise control]? * [Concert hall acoustics]? * Musical instrument * [Underwater acoustics]? * Audio signal processing ** [Audio storage]? ** [Sound synthesis]? ** Speech processing * Psychoacoustics |
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