該貼長達60多頁, 基本我們想到或沒想到的的問題應該都會包含了, 把它弄過來其實也就趁機做點紀錄, 逼自己認真看一次同時跟大家一起學習和思考。
說到 ppm, Skip Burriows 也提議用類似 vu meter 的做法
Skip Burrows :
Hey Paul, It’s an real honor, In my pervious Post I was attempting (Perhaps not very well) to describe a meter that would help stop young people from screwing up digital audio. I 1000% agree with you that your meter must show when you run out of headroom. As you better than any human on the planet know, people seem to have this ill conceived notion that you must use up every bit of headroom right from the first stage of AD conversion. My meter I have been trying to work with digidesign on, would be a default mode(changeable by a preference) that would have the -20/ 1.23/+4 reference at about ¾ the scale of the meter, then the remaining 20 db of headroom would still work and show a clip. I have done extensive research with students and my research has shown that this type of design would “Help” stop them from slamming the level to the top all the time. .
Paul :
I agree that the quest to use up all dynamic range is definitely the main problem. And you know the same thing was starting to happen with analogue in the end too, as people started aligning tape machines for higher level on tape in the latter years. And of course the first digital recorders (that needed 5 consecutive clipped samples to put on the red light) used to kick out +20dBV and above straight into analogue consoles which often strained to cope. Many people were using pads in XLR connectors to tame it even then.
I agree that changing meter scales 'could' help, provided people actually conformed to what is presented. But my worry would be that this doesn't actually change the conditions and of course it would not change the 'culture' of thrashing things in the belief that more 'resolution' would be at their disposal. This very basic but highly compelling myth of 'resolution' - which is happily perpetuated by the industry - is at the root of almost all misunderstanding about digital audio..
In a world where at every level of human existence people have been brainwashed with the almost religious mantra 'that more is always equated to better' - there is little chance of undoing the damage simply by the gentle persuasion of meter scales?
[ 本帖最后由 himhui 于 09-11-28 12:54 编辑 ]