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Sound Speed in Gases
This online calculator computes speed of sound in an ideal gas.
Doppler Effect in sound
Calculation of frequency and wavelength change for a moving source
Tone generator
The calculator generates different frequency and waveform sound tones.
Audio file waveform
The calculator displays the waveform of the input audio file fragment.
Tips and tricks #10: Files, long calculation mode
The article describes how to use input and output files in Planetcalc calculators
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