Sound travels by means of air. Since sound is pressure waves of air, without it (air), sound would not exist. In more technical terms, sound travels through mechanical waves that transfers energy from one place to another by means of mediums. This means that sound can travel through any form, whether it be liquid, gas or solid.
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Sample size is the number of digits in the digital representation of each sample. It is measured in decimal digits.
Sample rate is measured in Hertz (Hz), or samples per second.
• AM radio ranges from 535 to 1705kHz
• FM radio ranges from 88 to 108 MHz
• Digital radio has frequencies below 30MHz
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