Delay Between Direct Sound and First Reflection

A long delay ( 50 ms) can result in distinct echoes.
A short delay ( 5 ms) contributes to the listener's perception that the space is small.
A delay between 10 and 20 ms is found in most good halls.

Figure 3: An example impulse response showing direction sound, early reflections, and exponential decay of the sound.

$\includegraphics{eps/impulse.eps}$

**Figure 3:** An example impulse response showing direction sound, early reflections, and exponential decay of the sound.
$\includegraphics{eps/impulse.eps}$

``Music 175: Space'' by Tamara Smyth, Department of Music, University of California, San Diego (UCSD).