WHAT IS AUDIO AUDIO UNIT 01 WHAT IS

WHAT IS AUDIO? AUDIO UNIT 01

WHAT IS AUDIO? • How would you answer this question If a tree falls in the forest and there is no one around to hear it, does it still make a sound? What is your definition of sound?

WHAT IS AUDIO? • How would you answer this question If a tree falls in the forest and there is no one around to hear it, does it still make a sound? What is your definition of sound? Is it a 2 part process? Event and perception of event?

WHAT IS AUDIO? • Complete this sentence _ Sound travels as a _____.

WHAT IS AUDIO?

FREQUENCY / HERTZ • What is frequency?

FREQUENCY / HERTZ • What is frequency? • The pitch we can hear (cycles per second).

FREQUENCY / HERTZ • What is the range of human hearing?

FREQUENCY / HERTZ • What is the range of human hearing? 20 Hz – 20, 000 Hz What is another way to say 1, 000 Hz?

FREQUENCY / HERTZ • What is the range of human hearing? 20 Hz – 20 k. Hz

FREQUENCY / HERTZ • What is the range of human hearing? 20 Hz – 20 k. Hz https: //www. gieson. com/Library/projects/utilities/tonegen/- Online tone generator

FREQUENCY / HERTZ • A Graphic Equalizer allows to to customize your frequency ranges.

AMPLITUDE • What is amplitude?

AMPLITUDE • What is amplitude? • The volume (height of wave)

DECIBEL / SPL • How do we measure loudness?

DECIBEL / SPL • How do we measure loudness? • We measure loudness in decibels.

VU METER / HEADROOM / CLIPPING • A VU Meter is…

VU METER / HEADROOM / CLIPPING • A VU Meter is… • Used to monitor loudness. • Clipping is …

VU METER / HEADROOM / CLIPPING • Clipping is … when your audio is distorting!

HEADRROOM • What is headroom?

HEADRROOM • What is headroom? The safe area you can record sound before distortion.

SPEED OF SOUND • How fast does sound travel?

SPEED OF SOUND

SPEED OF SOUND • How come we can’t hear sound in space?

WHAT IS THE INVERSE SQUARE LAW?

WHAT IS THE INVERSE SQUARE LAW?

WHAT IS THE INVERSE SQUARE LAW? Whenever you double the distance from point of origin, sound decrease to ¼ it’s intensity or amplitude!

WHAT IS THE INVERSE SQUARE LAW? So how can we possible hear anything?

HOW WE HEAR Pay particular attention to the outer and middle ear!

RECAP Sound is a ___ part process. The sound _____ and the _____ of the sound. Sound travels as a _____. The range of human hearing is…. . The speed of sound is…. . When you double the distance from point of origin the volume decreases to what? What overcomes the Inverse Square Law and by how much? Our ear does what?

RECAP What is audio ?

RECAP What is audio ? Changes in air density / pressure which is converted into electrical impulses by our ear and interpreted as sound in our brain.