Blog 3
The human ear has evolved amazingly throughout or brief time on this earth. It is capable of allowing us to hear from approx. a 20hz fq to one of 20,000. Past these markers are what are known as infra/ultrasound. Infrasound is any fq below 20 hz and ultrasound is any fq higher than 20,000. When 2 fq of different hz match up it creates a pleasant tone. This tone is known as consonant. This usually happens when 1 tone has double the fq of another. This idea forms the basis of what is known as an interval in music. When the spaces between two notes are completely skipped, it is said that the 2 notes are at different octaves. But when one these tones are disrupted, say the fq is of by even 2 hz, it creates a dissonant tone.
Decibels are a unit that measure the degree of loudness. Having 0 db does not mean there is no sound. It actually means it’s in the range of human hearing. But if you were to shoot it up to 150, your eardrum would rupture from the pressure.
The human ear is very delicate. It consists of:
Ear canal - the entryway for sound
Ear flap - concentrates sound waves
Middle ear- eardrum and three tiny, interconnected bones - the hammer, anvil, and stirrup
Inner ear - serves as the body’s microphone, and converts sound into electrical impulses