Since sound is a mechanical perturbation in a fluid, it travels at
comparatively slow <a href="http://en.wikipedia.org/wiki/Speed_of_sound">speed</a>
of about 340 m/s. As a consequence, your acoustic guitar or piano has a
- latency of about 1–2 ms, due to the propagation time of the sound
+ latency of about 1–2 ms, due to the propagation time of the sound
between your instrument and your ear.
</p>
<h3>Digital-to-Analog and Analog-to-Digital conversion</h3>