Add more plucked instruments

[jonikorpi]

This is apparently almost impossible to do well with subtractive synthesis, but I like the plucked bowed strings I have so far, so…. https://www.soundonsound.com/techniques/final-attempt-synthesize-guitars

• Pick a set of instruments to model
  • Some guitars
  • Harp
  • Kantele
    • range from F1 to c4
    • “formants" maybe at 250, 380, 480, 800, 1300, 1800
• Find the frequency ranges for each
• Find the harmonic spectrums for each (which overtones they have, don’t have, and how strong they are)
• Find the “formants” for each
• Model them

[jonikorpi]

Guitars

Info from A Synthesist's Guide to Acoustic Instruments, Howard Massey, Alex Noyes, Daniel Shklair, 1987

• Nylon string guitar
  • Here, the fundamental is little more than twice as loud as the second partial (which, remember, is just a bit sharper than the true second harmonic due to that inharmonicity). The second partial is little more than twice as loud as the third. Interestingly, both the fourth and eighth partials are virtually absent. The fifth and seventh partials are half as loud as the third, and the sixth partial is just a bit louder than both of these. Here, the ninth and tenth partials have negligible presence.
  • Decay can last up to 20 seconds on low notes
  • Harmonics decay in about a second
  • 117.5Hz harmonic thud, very brief
• Steel string guitar
  • The second, third, and fourth partials are all present in significant strengths, with the second and third partials are actually stronger than the fundamental in the early stages of the sound. The third partial fades away somewhat more rapidly than the others, but all the lower overtones up to the 13th are substantially present - except for the sixth partial, which remains at a low level throughout the duration of the sound.
  • The relationship between the fundamental frequency and partials 2-9 remains pretty much the same throughout. Overtones above the ninth partial are gone completely by about half a second into the sound
  • bit longer harmonic decay