[Nick PRice] “between 4 to 6 on a PPM, and -18 to -10 on a vu meter, like FCPs. And music should generally sit around 5 on a PPM, no more than -12 on a VU meter. So just turn it down. There wont be any quality loss(!).”
PPM meters are a not accurate for a digital world. They are not a reliable measure of loudness, nor a really useful measure of peak levels. You mean dbfs not VU. -20dbfs = 0VU. Your comments are inaccurate and confusing.
If you “turn it down” it does effect the quality as you are reducing the effective bit rate. If you don’t understand this then please don’t pass comment.
To answer Tom. Tone is basically irrelevant in a digital world. Its purpose was to calibrate analog machines. In the NTSC world we provide -20 dbfs 1khz tone because they ask for it. In PAL it is -18dbfs 1 hhz tone because that’s what they want.
Broadcasters have chosen a maximum peak of -10dbfs. For DVD release there is no such limitation. Features films exceed the -10dbfs peak scale as does music DVDs. It isn’t the job of FCP editors to readjust a mastered final audio track unless they are providing versions for multiple markets including broadcast & DVD.
My job running a facility that does both audio mastering and FCP onlining is to make versions for those markets including cinema release. They all have subtly different requirements which a simple level tweak in FCP is not the right approach.
I don’t know why there is so much muddled and confused information and misunderstanding about audio. I do however appreciate this lack of understanding as I have had a long and distinguished career as a result.