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HOW IT IS PRODUCED AND PROPAGATED.
HOW IT IS PRODUCED AND PROPAGATED.
Sound is produce when an object vibrates. That movement travel through sound waves until it reaches our ears. The waves travel to the air at 340 meters per second (m/s).
HOW DO WE HEAR?
HOW DO WE HEAR?
The ear is the organ that perceives sound. Hearing is the process in which sound waves are captured by the outer ear and cause the eardrum to vibrate in the middle ear. These vibrations are turned into electrical signals and transmitted to the brain in the inner ear.
INFRASOUNDS AND ULTRASOUNDS
INFRASOUNDS AND ULTRASOUNDS
The human ear cannot detect all sounds.
- Regarding pitch, the range of human hearing normally goes from 20 to 20.000 hertz (Hz). Frequencies below the human hearing range are known as infrasounds and those above it are known as ultrasounds. But age and prolonged exposure to loud sounds can significantly lower your ability to hear high frequencies.
REVERBERATION AND ECHO
REVERBERATION AND ECHO
Reverberation is produced when sound waves find obstacles on their way. They are reflected or bounced back in the opposite direction of the sound source.
Echo is a kind of reverberation that creates the repetition of sound. When the time-lapsebetween the emitted and the reflected sounds is wide enough, we perceive them both separately.
Difference between Sound and Noise.
Difference between Sound and Noise.
Noise and sound are differentiated by the periocidity of the wave.
Noise and sound are differentiated by the periocidity of the wave.
Sound is produced by a regular or periodic vibrations and noise is produced by irregular vibrations, but there are other significant difference, a noise is unpleasant, annoying and a sound produces us a more pleasant feeling.
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