Ennet wrote:
I don't know much about the recording process, but it would be intresting if someone could explain:
- What is the point of raising the volume in the first place? Is it that for a given volume on a system the sound will appear to be better if it is louder, or are there other benefits?
Not quite sure to be honest - there aren't really any from a listener's point of view. A lot of artists are fooled into thinking there could be financial benefits because their recordings 'stand out'. The record labels seem blinded by the same misconception too...
The artist/businessmen behind the music gets played the first 20 seconds of two or three mixes, one louder (which engineers hate having to do) and one quieter (which is what most professional engineers ACTUALLY want) and maybe a few different levels between. The first 20 seconds of a 'crushed' loud recording usually sound better on a pair of mediocre, poorly set-up hifi/monitoring system in an acoustically poor room, but it's very disappointing to sit down and LISTEN to at length on a decent system which could otherwise make the music sound ace.
Try comparing two of your favourite recordings, but turn one of them up a couple of notches on the BeoSound - you'll find the louder one naturally sounds better, even if it didn't before. However, as said above, what sounds louder/better in the short-run can often sound worse in the long run, especially when you squash the dynamics out of the music in the process of making it louder...
Listeners will just end up turning the volume knob down if they find it too loud anyway, so what's the point in making records so loud?
Ennet wrote:
- Where in the process is the loudness / compression introduced? Are the dynamics lost already in the recording process, in mixing or in the final transfer/CD mix? Is the "source" kept in a high quality format anywhere so that in the future new "remastered" CD's with better dynamics can be released (opposite from now), or are recordings from the present time forever doomed to be of lesser quality/dynamics?
It seems to vary. Take for example the remastered versions of Fleetwood Mac's Rumours; the original master (which is or was available on CD) sounds fantastic. Very dynamic, all the instruments/guitar strums are still there as they should be, jumping out of the speakers at you, and the drums still sound fantastic/dynamic/punchy. Compare this to the latest 'remastered' version and you'll find a lot of the 'realness' of the original recording is gone.
In this example, the squashing of dynamics has happened at a mastering stage (which is where it normally happens, after the recording & mixing process). Making something sound 'loud' in the recording studio is normally very difficult, as a recording studio engineer will know how to make equipment work musically, and do what the musicians kinda wanted, but won't necessarily know how to make a waveform take up as much volume/loudness as possible without sounding crackley/distorted/compressed (which is what a mastering engineer does, along with making the whole album sound 'continuous' and complete).
A different example could be say, the Red Hot Chilli Peppers. Their music is some of the worst recorded music I've ever listened to - talk about compressed and clipped! This is quite obviously a recording which has just been recorded loud and noisy from the outset - and unfortunately seems quite unlistenable at any decent length of time.
I can listen to good dynamic music for hours on end every day when listening on good speakers. Listen to squished, compressed, 'loudness-wars-victim' music at length and you'll find your ears getting tired quite quickly. You'll end up sitting in a quiet room to get away from the noise!
Sadly, most people don't seem to care about the loudness wars as 80% of the population listens to music on the speakers in their laptops/computers and the earbuds connected to their iPhones. Because these devices often have volume limits as a result of EU legislations, the louder the recording a better - as it helps to cut across the background noise. If the EU removed this restrictions, and instead introduced more legislation to do with the education of the effects of hearing damage, then none of these problems would exist (in my opinion of course)!
Ennet wrote:
In the future I hope someone will utilize digital media to actually go one step beyond CD's and improve quality. With modern broadband connections and cheap storage it should be possible to use a lossless format with better specification than CD's. When you buy a song it could be downloaded in multiple formats, one high-quality, full dynamics version for hifi stereos, and one "compressed" version for iPods, cars etc. where it actually makes sense. It should all happen automatically, behind the scenes!
Mattias
Absolutely agreed!
MP3, AAC, WMA and other compressed PCM formats/variants for iPods/iPhones - i can't hear the difference between 192k MP3 and the original audio on my iPhone to be honest!
SACD/Pulse Width Modulation (PWM) for listening at home. PWM is a much smarter way of doing things than the conventional way of recording/storing/reproducing digital audio - it almost always seems to sound less angular and edgy! Unfortunately, PWM recording takes up a lot more processing power than the conventional digital format and would make a lot of modern recording techniques impossible to do!
Incidentally, PWM is actually how B&O's ICEPower amps work. Very clever technology!
Hope I haven't confused people.
Reading back through this post, I probably have. Oh well...