English: After every second, a harmonic is added on top a 220Hz sine wave, creating a 220Hz sawtooth wave. This file is generated using wavepot.com. The source code can be found
here.
Tiếng Việt: Sau mỗi giây, một sóng điều hòa được cộng vào sóng sin 220 Hz ban đầu, tạo thành răng cưa 220Hz. File được tạo từ wavepot.com. Mã nguồn
ở đây.
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