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	21000 Hz clean pure sine wave TEST TONE 21 khz frequency (SupernaturalMusic) View
	25000 Hz clean pure sine wave TEST TONE 25 khz frequency (SupernaturalMusic) View
	Speaker test tone (1 - 21000 Hz) - 10 minutes of linear frequency (DIY / Do It Yourself) View
	22000 Hz clean pure sine wave TEST TONE 22 khz frequency (SupernaturalMusic) View
	23000 Hz clean pure sine wave TEST TONE 23 khz frequency (SupernaturalMusic) View
	19000 Hz clean pure sine wave TEST TONE 19 khz frequency (SupernaturalMusic) View
	20000 Hz clean pure sine wave TEST TONE 20 khz frequency (SupernaturalMusic) View
	24000 Hz clean pure sine wave TEST TONE 24 khz frequency (SupernaturalMusic) View
	1Hz - 22Khz (Human Audio Spectrum) \| ∿ Sine wave \| 4k (Sk M) View
	Adderall - 10 Hz to 759.80 Hz + 9.80 Hz Brainwave - 7 Frequency’s Adderall (Dj M6e6n6s) View