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SOUND :loud_sound: - Coggle Diagram
SOUND :loud_sound:
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QUALITY OF SOUND, AND NOISE: SUPERPOSITION
:star: The characteristics of a sound which allow the human to distinguish between sounds of the same pitch and loudness:star: For an instance, why does a flute playing a "C" sound differently from a guitar playing the same note?:star: There are three contributors to timbre:pencil2: Attack and Decay
:pencil2: Vibrato
:pencil2: Harmonic Content (the most important contributor) 
Why does a trumpet sound different from a flute:question:
The answer lies in overtones— which ones are present, and how strong they are makes a big difference.The plot below shows frequency spectra for a clarinet, a piano and a violin. The differences in overtone strength are apparent. :
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STANDING WAVES
:+1::skin-tone-2: A standing wave is the combination of two waves that are moving in opposite directions, also known as a stationary wave
:+1::skin-tone-2: Standing waves are typically formed in situations where a wave is bouncing back and forth in an environment that produces constructive interference
:book: Nodes and antinodes in a standing waveNodes: areas in a standing wave that are constant and do not changeAntinodes: areas that fluctuate the most:!:In a standing wave, the nodes do not move even though waves are constantly passing through them in both directions
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CHARACTERISTICS OF SOUND
- Sound can travel through any kind of matter,
but not through a vacuum
- the speed of sound is different in different materials
- slowest in gasses, faster in liquid and fastest in solids
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audible range
about 20 Hz to 20,000 Hz;
upper limit decreases with age
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BEATS
sound wave also interfere like other waves, when two waves of different frequency interfere, it will cause beats
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APPLICATION
sonar
:question: how sonar works :question:
- A sonar device sends pulses of sound waves down through the water
- When these pulses hit objects like fish, vegetation, or the bottom, they are reflected back to the surface
- The sonar device measures how long it takes for the sound wave to travel down, hit an object, and then bounce back up
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medical imaging
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repeated traces are made as the transducer is moved and a complete picture is built
SHOCK WAVES & SONIC BOOM
If a source is moving faster than the wave speed in a medium, waves cannot keep up and a shock wave is formed
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