The standard sound level for humans is 60 dB. This level represents the threshold of normal conversation and is commonly used as a reference point for measuring other sound levels. Sound levels above 85 dB can cause hearing damage with ...
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Doppler effect is related to sound. It describes the change in frequency of sound waves due to relative motion between the source and observer. Approaching objects increase the frequency (higher pitch), while receding objects decrease it (lower pitch), affecting how ...
When we hear people talking in the same room without seeing them, it is due to diffraction. Sound waves bend around obstacles and spread out after passing through openings, allowing us to hear voices even when the source is not ...
Tuning a radio station is an example of resonance. By turning the knob, the radio’s circuit is adjusted to resonate at the specific frequency of the desired station. This resonance amplifies the signal from that station, allowing clear reception of ...
Women’s voices are thinner (shrill) compared to men’s voices primarily because the frequency is higher. Higher frequency results in a higher pitch, characteristic of women’s voices. This is due to women having shorter and thinner vocal cords that vibrate at ...