Originally Posted by dubber
I should have added that it actually sounds WORSE now than it did prior to the CALM Act going into effect.
Definitely seems like they are using more compression somehow.
Luckily for me I don't watch much TV at all anyhow. Most of what is on is CRAP. And unfortunately when there is quality programming on (which is rare anymore) the amount of spot ad time is so high during the programs and constant interruptions as well that it isn't worth bothering.
Got rid of Pay TV a couple of years ago. Don't miss it at all.
The fact of the matter is that the only thing that changed on December 13 is the law went into affect. Other than that, nothing else changed. We have been preparing for the CALM act for many months so 12/13 was business as usual.
We receive many commercials from many different advertisers. The vast majority of the local spots we receive are file-based in various video file formats. If the audio on the spot is compressed, it is because the advertiser/production company made it that way. Every file-based spot we receive is sent to a video transcoder to convert the file to the required format for our video server. During the transcode process, the B.S. 1770 loudness correction is applied. This is the only change we make to local commercials provided to us. This provides a high degree of consistency in local commercial audio levels. We also have an audio leveling device in line prior to sending the signal to our transmitter or re-distributors (cable and satellite).
Obviously, what happens to the audio after it leaves our facility is out of our control. One of the most troublesome issues is audio processing in home receivers and audio systems (look at your menu and see the many audio settings that allow end users to alter/control audio). Some of these can have an adverse affect on audio quality and perceived loudness especially when converting 5.1 to stereo.
It is always our goal to have consistent audio levels and we do everything we can to achieve that goal. The technology has improved but we still haven't attained perfection and it is unlikely we will any time soon. That said, our audio monitoring equipment provides the average loudness for each program and commercial we broadcast and the average loudness measurement is consistently +/- 2db of our desired level. Audio loudness is measured over time (usually averaged every 30 seconds). Instantaneous audio levels will vary much more.
The digital television system was designed to have a wide dynamic range for more realistic audio when watching movies and other entertainment programming. Do you really want a whisper to be the same level as an explosion?