Pure Sine Wave 1000Hz Ten Hours

$1.50

Pure Sine Wave 1000Hz Ten Hours

Description

Pure sine wave 1000Hz is a common tone used in broadcast as a test tone and a ‘please stand by’ or ‘off the air tone’ in the 20th Century. The Sine wave has no overtones so it is sometime called pure as it is only the fundamental frequency. Ten Hours 192kbps mp3 format

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