"Test Pattern," MuchMusic's inaugural game show in the late 1980s to early 1990s, featured Bill St. Amour on music and sound, with announcer Bill Carroll. Hosted by Dan Gallagher and produced by ...

When you step up to the mic, it's not just amplifying you; it's also picking up sound from the front, back, sides, or from multiple directions at once. This is what's known as a microphone's polar ...