• sound-basic, sound-amplitude, sound-frequency

• FFT.analyze()
  • returns an array of 1,024 values between 0 and 255
  • Each value represents the amplitude (loudness) of a small frequency range (pitch of the sound)
• FFT.waveform()
  • returns an array of 1,024 values between –1 and 1
  • Each value represents the amplitude of the sound for a tiny portion of time
• FFT.energy(freq1, [freq2])
  • returns the volume of the sound at a frequency range specified by the freq1 and freq2 parameter
  • You can specify freq1 as a number, or p5.js provides strings for common values such as “bass” and “treble”, and leave freq2 empty

애니메이션 함수 참고 자료