what it comes down to because of the bridge keeping the strings in place without slipping and the machine heads for the tuners keeping the Guitars tuning when we hit the strings they create music because when they're hit they vibrate back and forth at speeds that go throughout the neck and body to create sound
the faster the strings move the higher pitched the notes are , and vice versa the slower the lower the note which is why playing near the body (24th fret) compared to far away from the body of the guitar (1st fret) we get different sounding notes.
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Amplifying, or amplification would be common descriptors for the process of making sound louder.In musical instruments, sounding boards are one common practice. These vibrate a larger surface. This applies to piano and violas. A horn or trumpet is a device for matching the impedance of the source to that of free air, and this device is used in the brass instruments(including the digeridoo!) and some wood wind instruments. A car horn and a speaking trumpet are other examples.These simple systems may give in excess of 20dB amplification. (100 times).
When air from the lungs is passed over the vocal cords inside the larynx, they vibrate. This makes a sound. The vocal cords are tightened or relaxed to change their length. This changes the speed of vibration which alters the pitch. If only the larynx is involved, the sound comes out as a dull 'aaah' in varying pitch. No recognisable words can be formed without the use of the lips, teeth, tongue and palate. This is why people with serious facial injuries or with many teeth missing often have trouble speaking or being understood.
your vocal cords vibrate to make you voice
The holes in a sonometer will make sure the inside air in communication with outer air therefore we can hear the sound.
A lubricant and sound insulation.