
Recording 101 teaches us that the audio spectrum is 20-20,000 Hz and it is our job as recording engineers to manage those frequencies. For introductory level classes, that is a usable definition, but it often leads to misunderstandings. >Do we hear 20 Hz as much as 20,000 Hz? Do we hear those frequencies as well as 2,000 Hz? The answer to both is no. In fact, given contemporary technological limitations, it isn’t even possible to accomplish most of that. For those of you who read Jay’s Primer on Audio Frequency Bands and made it all the way the bottom, you would have read some interesting things about broadcast standards and encoding algorithms. Broadcast standards here in the US actually cut off frequencies above 15 kHz. That is, radio and television broadcasts don’t even bother with the top 5000 Hz of the audible spectrum! If there were such a thing as radio anymore, you’d know to laugh off any audio engineer who promises you “radio quality mixes.” Also, cutoffs... Read More →