Tone sounds

Signal 900 hz (1 min, -24db)
2451 809
Sawtooth signal from 20hz to 20000hz
2436 587
918. 5 hertz signal
2427 722
Sound 440 hertz (a) for tuning viola, viola
2401 889
Sound 41. 20 hertz (e) for bass tuning
2358 674
Sound 293. 66 hertz (d) for violin tuning
2348 578
To hide censorship (short, 1 sec)
129 4

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