Resonators color spectral and temporal content of transmitted sound.

Evidence

Each resonator colours the spectrum of the sound travelling through it, changing the spectral content of the sound. It is also important to know how the sound changes in the temporal domain. As will be shown in the following chapters, hearing can resolve temporal changes in the positions of the signal components if they change at least every few milliseconds, although with rapidly-changing signals, like a sawtooth wave, very small differences are audible. At the resonance frequencies, the build-up and decay time of the system response is usually larger than between the resonant frequencies. For example, the impulse response corresponding to the magnitude response of the body, shown in Figure 6.2, is so long that the ear perceives it as a sort of reverberation. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 660

Categorization

• XREF: The build-up/decay differing between resonance and non-resonance frequencies, perceived as reverberation, ties directly to the body’s role as an acoustic filter shaping both timbre and time-domain behavior of plucked/instrument sounds.