This is a measure in decibels of the sound power produced by an object. It is measured with a sound level meter. There are contests held to see what vehicle can produce the highest SPL through its sound system.
Sound Pressure Level is the loudness of sound relative to a reference level of 0.0002 microbars. Standing Wave - A stationary sound wave that is rein-forced by reflection between two parallel surfaces that are spaced a wavelength apart. Supercardioid Microphone - A unidirectional micro-phone with tighter front pickup angle (115 degrees) than a cardioid, but with some rear pickup. Angle of best rejection is 126 degrees from the front of the micro-phone, that is, 54 degrees from the rear.
Intensity of sound measured in decibels.
Sound Pressure Level. Expressed in decibels (dB), a logarithmic measure of the energy (amplitude) of a particular sound as compared to the energy of a specified reference sound.
sound pressure level. The intensity of a sound wave which, in decibels, equals 20 log (PslPr), where Ps is the pressure produced by the sound and Pr is a stated reference pressure.
A standard measurement of the amplitude of sound, expressed as the ratio in decibels between the measured sound pressure and standard reference of 0 dB SPL = 20 microPascals = 0.0002 dynes/cm2.
A measurement of the volume of sound, expressed in decibels (dB): a function of amplitude.
Sound Pressure Level. A measure of the sound pressure present; dB above the Threshold of Hearing (.0002 Microbars).
An abbreviation of Sound Pressure Level, referring to a pressure of .0002 microbar, considered to be the Threshold of Hearing (lowest level where people begin hearing sound).
A measurement of the loudness of a sound.
Sound-Pressure Level. Measured in dB.
Sound Pressure Level. The measurement of loudness, or amplitude, of sound, expressed in dB.
Sound pressure level. Given in decibels (dB), it is 20 times the logarithm to the base 10 of the ratio of a given sound pressure to the reference sound pressure, which is 20 micropascals (mPa) for airborne sound. The sound pressure is the root mean square value of the instantaneous sound pressure over a given time interval (IEC 84).
Sound Pressure Level. A measurement of loudness, rated in dB or decibels. This is a logarithmic unit, so 100dB doesn't mean twice as loud as 50. It takes twice the power to increase output by 3dB.
Sound Pressure Level. An acoustic measurement for sound output, usually from speakers, measured in decibels.
Sound pressure level. The measurement of the amplitude (loudness) of sound. The unit of measurement is the decibel.
See sound pressure level.
Sound Pressure Level The unit of measurement of sound pressure expressed in dB re 20 ?Pa (the lowest threshold of hearing for 1 kHz). 0dB is therefore the threshold of hearing.
Sound-Pressure Level. See also dB.
Sound Pressure Level. the loudness of an acoustic wave stated in dB that is proportional to the logarithm of its intensity.
The acoustic level of sound waves measured in dB's.
Sound Pressure Level, the basic measure of noise loudness, expressed in decibels
Sound Pressure Level. An acoustic measurement for the ratios of sound energy. Rated in decibels (SPL dBA, SPL dBC).
abbreviation for "sound pressure level," a means of expressing sound levels. Frequently used as a comparative measure of speaker efficiency or maximum system output.
Sound Pressure Level. An important measure of sound loudness, the level is calculated in decibels by 20 times the logarithm to the base 10 of the ratio of the measured sound pressure level and the reference point.
Reference efficiency value of a speaker; it is measured in decibels and at a distance of one meter, with 2.83 Volts in the input.
Set priority level, a function that was formerly part of the DDI/DKI, and used to lock or allow interrupts on a processor. It is not possible to use spl effectively in a multiprocessor system, so it has been superceded by more sophisticated means of synchronization such as the lock and semaphore.
Sound Pressure Level. the sound pressure level of a noise source, expressed as a decibel value
Sound Pressure Level. The momentary pressure measurement expressed in dB as a ratio to a given power level.
Sound Pressure Level, intensity measurement of sound waves.
Sound Pressure Level. An acoustic measurement of sound energy, typically expressed in dB SPL.
Sound Pressure Level. Splatter Splay
A measure of the loudness of sound at a particular point in an auditorium. All cinemas and mixing studios are aligned to the same SPL to ensure the audience hears the film soundtrack at the level the director intended.