Celestion bass speakers - orange label v green label

[voxpop]

Think of it as being like the ads on telly. The peaks in volume are the same as the programmes but the average volume is raised because of the compression they apply to the sound.


Great way of explaining SS v Valve loudness.

[Bill Fitzmaurice]

[quote name='voxpop' timestamp='1368085854' post='2072898']
Think of it as being like the ads on telly. The peaks in volume are the same as the programmes but the average volume is raised because of the compression they apply to the sound.
Great way of explaining SS v Valve loudness.
[/quote]+1. Regulations say that commercials cannot be louder than the program. By using compression the maximum dB level isn't higher, but the content has higher density due to the loss of dynamic range, so it sounds louder. Not because the peaks are any higher, but because the valleys have been filled in.

[LawrenceH]

[quote name='Bill Fitzmaurice' timestamp='1368100465' post='2073145']
+1. Regulations say that commercials cannot be louder than the program. By using compression the maximum dB level isn't higher, but the content has higher density due to the loss of dynamic range, so it sounds louder. Not because the peaks are any higher, but because the valleys have been filled in.
[/quote]

Rather off topic, but in Europe at least there have been recent recommendations and defined standards using perceived loudness-based metering that are changing this, and will have knock-on effects for music production intended for commercial broadcast - if anyone's interested look up ITU BS.1770-3 and the earlier EBU R128. The old trick of overcompressing will potentially be quite counterproductive as the level will get dropped anyway.

[Bill Fitzmaurice]

[quote name='LawrenceH' timestamp='1368101849' post='2073177']
Rather off topic, but in Europe at least there have been recent recommendations and defined standards using perceived loudness-based metering that are changing this, and will have knock-on effects for music production intended for commercial broadcast - if anyone's interested look up ITU BS.1770-3 and the earlier EBU R128. The old trick of overcompressing will potentially be quite counterproductive as the level will get dropped anyway.
[/quote]One can get around that by fiddling with the frequency content, emphasizing the mids. You can't beat the marketeers. That's why I record what I want to watch and view it at a later date, so I can jump the commercials and regain the 20 minutes out of every viewing hour I'd otherwise lose to them.