Quét Điện Tử 0

Use Audacity
• Generate→Chirp…
- Start
Frequency (Hz): 100
Amplitude: 0.5
- End
Frequency (Hz): 10000
Amplitude: 0.5
Interpolate: Log
Duration: 00h 00m 1.000s

• Copy all

• Paste (in new track at 0.000s)

• Effect→Reverse

• Original track (top track) press down arrow (left side where show data about track)
Make Stereo Track

• Select stereo track

• Effect→Vocoder…
Distance: 1
Output choice: both channels
Number vocoder bands: 240
Amplitude of original audio (percent): 100
Amplitude of white noise (percent): 0.0
Amplitude of Radar Needles (percent): 0.0
Frequency of Radar Needles (Hz): 1.0