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| Re: How many of you master 100% ITB? [message #304213 is a reply to message #302122 ] |
Thu, 10 January 2008 13:55   |
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Schallfeldnebel
Messages: 800
Registered: October 2004
Location: Europe |
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| Kees de Visser wrote on Fri, 04 January 2008 00:17 |
Dan Lavry stated in a recent thread in the Gearslutz forum (http://www.gearslutz.com/board/1723848-post76.html) that digital is great for linear processing, but "not so good" for non-linear processing like compressing. According to him all non-linear processors introduce aliasing unless specifically designed not to. Using higher sample rates will reduce the audible effects (but IMO that's only a workaround, not a solution).
Could aliasing have been that seriously overlooked/neglected in most non-linear digital applications ?
I also wonder if this could be an explanation for the popularity of some outboard processors that use internal upsampling.
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How can digital compressor-limiters cause aliasing problems? It is nothing more than a volume control, and if it is a multiband like my Weiss DS1mk2, the filter used is a phase linear one.
BTW, I master everything in the digital domain, but with outboard digital equipment, mostly Weiss and some Z-Sys. But I am in the classical music domain.
Schallfeldwebel
Bill Mueller:"Only very recently, has the availability of cheap consumer based gear popularized the concept of a rank amateur as an audio engineer. Unfortunately, this has also degraded the reputation of the audio engineer to the lowest level in its history. A sad thing indeed for those of us professionals."
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| Re: How many of you master 100% ITB? [message #305959 is a reply to message #301898 ] |
Wed, 16 January 2008 00:27 |
Matt Winegar
Messages: 122
Registered: August 2006 |
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Does his name rhyme with *****?
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| Re: How many of you master 100% ITB? [message #308464 is a reply to message #305597 ] |
Wed, 23 January 2008 19:06 |
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Schallfeldnebel
Messages: 800
Registered: October 2004
Location: Europe |
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The most common one happens when the attack time is set very short (for example in brickwall limiting), creating the potential for an instantaneous level change (which like any step function, generates harmonics).
I assume when a pre-watch delay is build in you avoid that problem.
A less obvious and yet more insidious problem is that some digital limiters exhibit aliasing in the sidechain and this causes amplitude anomalies in the audio path, unrelated to the input signal.
But these are badly designed units I assume. I can imagine there is more digital equipment causing aliasing problems when not designed well.
Thanks for your explantion CZ.
Schallfeldwebel
Bill Mueller:"Only very recently, has the availability of cheap consumer based gear popularized the concept of a rank amateur as an audio engineer. Unfortunately, this has also degraded the reputation of the audio engineer to the lowest level in its history. A sad thing indeed for those of us professionals."
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| Re: How many of you master 100% ITB? [message #308512 is a reply to message #308487 ] |
Wed, 23 January 2008 22:34 |
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in terms of sonics. i think that protools is badly designed. so we
could start by recommending that mix engineers use a better
platform. an m.e. may select appropriate tools, but what
could be done to stem the tide of garbage coming in?
one can sort out a worthy itb chain. but one can only do so much
for mixes where the recordings were already butchered.
some braniac marketeers proffer the notion that one could take
tizzy aliased little square waves and smear them to
heaven by sticking a tube on the end. that kind
of dreaming can only take one so far.
jeff dinces
cerberus audio
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