Doppler Shift

Compute a Doppler shift:

Doppler shift 300Hz, 75mph

Subjective Acoustics

Compute perceived loudness:

perceived loudness 110 Hz, 60 dB

Compute source loudness:

source loudness 11 kHz, 25 phon

Sound Absorption

Find the absorption coefficient of seawater:

sound absorption in sea water

what is the absorption coefficient of sound in the atlantic ocean?

Determine the effect of distance on sound pressure levels in moist air:

decibel levels in moist air

Helmholtz Resonator Frequency

Determine resonant frequency of a cavity:

frequency of a helmholtz resonant cavity with a 4 inch neck

Threshold Hearing Distance in Moist Air

Find the maximum distance for hearing a sound:

furthest distance you can hear 100 dB

hearing threshold at 80 degrees and 80% humidity

Audio Waveforms

Generate sound with a specified waveform:

play 1.5kHz sawtooth

Specify a waveform as a mathematical function:

play sin(3000t)+sin(4243t)