UFO Hạ Cánh.wav

UFO landing like from Hanna Barbara's space cartoons (stereo):
AUDACITY
For right channel:
- Generate→Chirp...
Waveform: Sine
Frequency Start: 1800
Frequency End: 1
Amplitude Start: (0.3)
Amplitude End: (0.3)
Interpolation: Linear
Duration: 00h 00m 06.000s

- Tracks→AddNew→MonoTrack

- Generate→Silence...
Duration: 00h 00m 16.000s

- Tracks→Mix and Render

- Effects->Echo
Delay time: 0.3
Decay factor: 0.8

- Cut become 9.0s

-Effect→Fade In
From 0.0s to 1.2s

- Effect→Fade Out
From 6.0s to 9.0s

For left channel (same formula for right channel except Chirp):
- Generate→Chirp
Waveform: Sine
Frequency Start: 2000
Frequency End: 2
Amplitude Start: (0.3)
Amplitude End: (0.3)
Interpolation: Linear
Duration: 00h 00m 06.000s