9 mp3-audio-sounds for tag    Doppler effect

*Fluttering generated by synthesizer* >>> mp3-audio-sound-download

*Train close by with wheels rolling on metal, to some extend rhythmic rumbling noises* >>> mp3-audio-sound-download

*Ambulance drives past quickly with blasting siren* >>> mp3-audio-sound-download

*Jet fighter at low altitude over the square* >>> mp3-audio-sound-download

*Jet aircraft flying a curve at low altitude* >>> mp3-audio-sound-download

*Repeatedly honking car passing by quickly* >>> mp3-audio-sound-download

*Rails singing and train passing* >>> mp3-audio-sound-download

*Cars close by, reaching cobblestone* >>> mp3-audio-sound-download

*Motorcycle from right to left* >>> mp3-audio-sound-download