8ve Oscillator Lite (Version 1.0 - December 2009)

Octave Oscillator with Noise Lite produces test signals (sine, square, pulse, triangular, sawtooth and white noise) at a selection of octave spaced fundamental frequencies (except the noise!).

The fundamental frequency can be selected at the octave values (going up or down by one octave doubles or halves the frequency respectively) that are typically used for acoustic testing of rooms, equipment testing and clinical hearing tests: 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz and 8 kHz.

The output level can be varied with a decibel (dB) calibrated volume control in 6 dB steps; a -6 dB (+6 dB) step is a halving (doubling) in sound pressure.

Summary of differences between Lite and Full versions:

Octave Oscillator with Noise Lite differs from the full version in that: (1) fundamental frequency cannot be arbitrarily selected via a text box; it can only be selected in octaves between 250 Hz and 8 kHz (the full version has 125 Hz to 16 kHz), and (2) it only has one decibel control in 6 dB steps (the full version also has 1, 2, and 10 dB steps available).

Please be aware that listening to loud sounds can damage your hearing. Please also bear in mind that if you cannot hear a sound it does not mean that others around you cannot hear it (everyone will lose high frequency hearing with age - an effect known as presbycusus).

More details about human hearing can be found in: Howard and Angus, Acoustics and psychoacoustics, 4th Edition, Oxford: Focal Press, 2009, ISBN: 978-0-240-52175-6.

Please use Octave Oscillator with Noise with care and due consideration for others.

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