Plucked string excitation is independent of vibration so it models easily

Evidence

In plucked string instruments, the excitation is impulse-like. Ideally, the plucking imposes a pulse of acceleration on the position of plucking from where the wave starts to propagate in both directions of the string. Figure 6.1 shows the playing of the classical acoustic guitar, where the strings are plucked with fingers. When plucking with fingers, the temporal excitation of the string is smoother than an ideal impulse, causing a low-pass filtering effect in the sound. After the plucking, the string vibrates autonomously, the amplitude decaying with time. In this case, the modelling is relatively easy, because the vibrations of the string occurring after the excitation cannot affect the excitation itself. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 668

Categorization

Category: Causal Relationships

• DEFINE: Establishes the key distinction between linear (plucked) and non-linear (blown/struck/bowed) excitation from a signal-processing standpoint.

Related

• Plucked strings vibrate autonomously after excitation, simplifying their modelling. (similarity 0.92)
• Plucked strings vibrate as a sum of harmonic partials, not as a pure tone (similarity 0.83)
• Striking near a string’s fixed end cancels the sound (similarity 0.82)
• Plucking position on a string suppresses modes with nodes there (similarity 0.81)
• Plucking position on a string determines which harmonic modes are suppressed (similarity 0.81)
• Plucking a string at a node suppresses every Nth harmonic (similarity 0.80)
• A stringed instrument’s pluck position can be read from harmonic amplitude dips. (similarity 0.79)
• Adding mass at a node leaves a vibrating string’s mode unchanged (similarity 0.79)