Fundamentals of Audio Technology
One instance of compressions and rarefactions.
Frequency is a measurement of cycles per second
82.41Hz
Sound Wave Diagram
Sound Wave Diagram
  • A: Attack - duration for sound to reach full volume
  • D: Decay - duration from full volume to sustained level
  • S: Sustain - duration of ongoing sound
  • R: Release - duration for sound to reach silence
ADSR
ADSR
Volume
Sound
Waveform
20Hz - 20kHz
Hertz (Hz)
The frequency gets faster, the pitch goes up
1130 ft/sec at 68°F
Physical distance of cycles
Velocity/Frequency
Decibel
dB SPL
0 dB SPL
140 dB SPL
Integer divisions of a fundamental frequency - sonic fingerprint
Partials or Harmonics
f x partial
4400 Hz
1750 Hz
Odd partials
Odd partials, half the amplitude in relation to square wave
All partials
Tone or characteristics of sound
Lowest frequency of a harmonic sound
Divisions of a fundamental frequency
Sympathetic Vibration
Hammer, Anvil, and Stirrup
Transducer
Cochlea
Direct sound
Early Reflections
Reverb
Interaural Time difference (ITD), Interaural Level Difference (ILD), Effects of the Outer Ear (head-related transfer function)
Frequency response of the human ear.
Silence
Beating
Combination Tone
Masking
75-85 dB
Standing Wave or Room Mode
Omnidirectional
Cardioid
Condenser Mic
Dynamic Microphone
bidirectional_pattern
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