OP 48 is extremely vague in most regards. (Dont EQ harshly.. Dont over compress etc etc) OP29 and 36 I believe gives any reference to levels. They actually stipulate it is ok for it to be at -9dbFS.
8.1.5 The alignment level of the PCM Audio Signal (AES) shall be minus 20 dB with respect to the onset of digital clipping i.e. minus 20dBFS (SMPTE RP.155). |
8.1.6 The quasi peak recorded audio level8, as measured on a quasi peak reading instrument, shall not exceed 11dB above alignment level i.e. -9 dBFS.
In saying that, -10 is also acceptable, and if I do not know where my program is going to, will sometimes mix to that peak with the same relative loudness. (1db more relative limiting)
The fact of the matter is to get consistent readings on your VU meters, your program will be really squashed. If you don't have access to good VU's, you can use the waves Dorrough meters quite well from my experience.
Don't forget it is essential to have 12 frames of silence top and tail of the spot.
If you want me to check anything over for you please feel free to send me something sound AT mattperrott DOT tv