🧠 Human harmonic series recognizer §

= an algorithm to identify that a note is being played, which works for all different overtone series-es (→ different timbres)

How? §

1. Normalization (→ theme)
   1. reduce ⛓ Harmonic series (tones) to ratios → normalize to intervals
      • → ⚖️ Relative Pitch
   2. half/double (= shift octabe) ⛓ Harmonic series (tones) until it is within a particular frequency range spanned by a factor of 2 → normalize to one octave
2. Recognition
   1. Normalize (step 1) the input signal in parallel with many different half/doublings
   2. Check if any 🟨 Abstraction matches a feature vector → choose highest likelihood

Artifacts §

• recognize important sounds
  • → input gets simplified