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Sonic beacon Loudspeaker Test Software



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dBA to Sones conversion

Sound Pressure Level, loudness and intensity are not the same things. Human hearing is more sensitive to some frequencies than others and furthermore its frequency response varies with level. The most common method of measuring perceived loudness is the Sound Pressure Level (SPL) meter with an dB(A) Weighting. This weighting basically adjusts the value of the SPL measurement based on the curve below.




Using the above weighting curve we can gauge the relative impact of environmental noise on our hearing. The sone is a unit of measure of the perceived loudness of sounds. It is commonly used in the assessment of such things as mechanical noise. Many SPL meters do not measure sones directly so we must convert from the common dBA scale available on most units. The graph below approximates the conversion to an accuracy of about 2dB.


What We Do

Sonic beacon produces electrical and acoustical data acquisition and analysis software for the Windows operating system.


About Us

Sonic beacon is a Canadian organization that provides a free set of virtual instruments that are useful for measuring the time and frequency domain responses of audio components using a personal computer. It is located in Pakenham Ontario which is near Ottawa, Canada.

News and Events

March 23, 2014: 32 and 64 Bit Versions of sonic beacon ( released. Tested on Microsoft Windows 8 (64 Bit), Microsoft Window 7 Home Premium (64 Bit) and Windows XP 32 Bit Professional.

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