I recently attended a local Media Communications Association International meeting of area sound and video producers and my friend JJ Wright of Different Drummer Studios was sharing the finer points of audio engineering.
I learned a few things that may be of interest:
Any room’s acoustics distorts and bends sound. Mitigation of sound issues include use of rigid fiberglass covered with fabric to create bass traps and reduce bass tones.
Foam isolates high tones.
JJ also played a before and after clean up of a file with crickets that needed to be eliminated from the raw file. He demonstrated by showing with the visual of a spectrographic view of an audio file. The cricket noise was a specific frequency that he was able to erase from the image view, and thus the audio. Amazing.
The biggest part of the presentation however is dealing with audio file preparation now with the CALM Act, a new law signed into law about a year ago by President Obama . Read more on the “Commercial Advertisement Loudness Mitigation” or “CALM Act.”
Supposedly the law was to go into effect January 1 of this year. All commercials produced for network and local TV must run -23db average and -10 peak. So television commercials will not sound louder than the sound of its programs .
I took a visit to the FCC’s website to learn more.
Have you noticed any difference? I’m hearing a lot of compression or EQ on spots that still seem louder.