Audacity:. • file→new. Left track• tracks→add new→mono track• change become left channel. • generate→chirp. . . - waveform: sine- startfrequency: 1000amplitude: 0. 5- endfrequency: 3000amplitude: 0. 5- interpolation: linear- duration 00h 00m 01. 000s. • effect→tremolo- wavefrom type: sine- starting phase (degrees): 0- wet level (percent): 100- frequency (hz): 6. 0. Right track:• tracks→add new→mono track• change become right channel. • generate→chirp. . . - waveform: sine- startfrequency: 1500amplitude: 0. 5- endfrequency: 4500amplitude: 0. 5- interpolation: linear- duration 00h 00m 01. 000s. • effect→tremolo- wavefrom type: sine- starting phase (degrees): 0- wet level (percent): 100- frequency (hz): 6. 0. • make stereo track.
Author: Sieuamthanh