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Echo xảy ra như thế nào?

Các gương sẽ chảy các hình ảnh và gửi ánh sáng trở lại. Các bức tường cũng gửi tiếng nói trở lại. Nếu bạn đứng xa hơn một chút từ một bức tường cao hoặc một vách đá lớn, bạn sẽ nghe giọng nói của bạn quay trở lại một vài giây sau đó.

Nếu một làn sóng âm thanh gặp một bức tường hoặc một bề mặt đá cao và rộng, nó quay ngược về phía nguồn của nó. Đó là cách mà ECHO xảy ra. Nếu âm thanh được trích ra là ngắn và sóng âm thanh đến pin như bình thường, ECHO được nghe rõ ràng. Dấu vết của âm thanh vẫn ở trong tai trong 1/10 giây.

Bởi vì tốc độ của âm thanh trong không khí là 340 mét/giây, khoảng cách giữa các nguồn âm thanh và pin là một echo phải có ít nhất 17 mét.

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