Need help with audio levels for infomercial

Chanimal wrote on 10/19/2004, 11:21 PM
I am finishing an infomercial and doing the final volume adjustments. Following are the TV station requirements:

"Primary or main program audio should be on recorded on the "Right channel (2)." This of course does not apply to programs scheduled to play on channels that are aired in stereo. Program audio levels must peak at +4dbm (NOT 0dbm) and must not be lower than -10dbm for best sound quality on our system."

This will show on a public station, I assume it has stereo.

I don't know what this means. Is the +4 the level between the 3 and 6 on the master volume?

What would 0dbm mean?

What about, "not lower than -10db" mean? How does this read on the volume meter?

I have the master audio volume control open so I can watch the peaks. Without any adjustment the levels vary between 6 and 3 during most of the 3 minute video, with a few spikes during music or special effects into the red as high as -2.4.

I turned on the master audio bus and first tried to adjust the timeline. Then I realized I could do this automatically with the wave hammer fx plug-in. The default setting adjusts it to around 6 and eliminates any peaks. If I use the preset for voice (there is a narration with music and special effects throughout) the volume hoovers between 3 and zero (without every going red--like it does currently).

Questions:

Am I using the right approach?

What should the volumes be at to meet the spec listed above?

Is there a different way that would work better (different plug-in, etc.)?

Essentually, what is the best method to meet the required specs?

Thanks in advance.

***************
Ted Finch
Chanimal.com

Windows 11 Pro, i9 (10850k - 20 logical cores), Corsair water-cooled, MSI Gaming Plus motherboard, 64 GB Corsair RAM, 4 Samsung Pro SSD drives (1 GB, 2 GB, 2 GB and 4 GB), AMD video Radeo RX 580, 4 Dell HD monitors.Canon 80d DSL camera with Rhode mic, Zoom H4 mic. Vegas Pro 21 Edit (user since Vegas 2.0), Camtasia (latest), JumpBacks, etc.

Comments

farss wrote on 10/20/2004, 12:19 AM
The whole 0dBm thing is irrelevant in the digital world, sounds to me like they're still using specs from the old days. Your audio should peak to just a tad under 0dBFS as read on the Vegas meters. I MUST never go over, that applies to anything, period, end of story!
Beyond that where evrything else sits is YOUR decision, they should just play it out as is.
That's the technical stuff out of the way, the rest is creative call and there's no chiselled in stone rules. If it's a TVC, normally the speak is pushed pretty hard, I'd use wave hammer with the speech template, on the speech track only of course if you want it to really have it leap out at them, a bit less compression will will give you more dynamics.
But all these things are creative decisions and as I said there's no one shoe fits all, you listen to it and decide, it's going to have your name on it after all.
For more guidance I'd strongly suggest Jay Rose's book Audio For Post Production, it covers just about everything.

Bob.
Chanimal wrote on 10/20/2004, 9:24 AM
Farss,

Thanks for your comments.

I assume TVC is total volume control?

You said the "speak is pushed pretty hard." I assume you mean the voice over track is louder.

Thanks for the audio book suggestion.

***************
Ted Finch
Chanimal.com

Windows 11 Pro, i9 (10850k - 20 logical cores), Corsair water-cooled, MSI Gaming Plus motherboard, 64 GB Corsair RAM, 4 Samsung Pro SSD drives (1 GB, 2 GB, 2 GB and 4 GB), AMD video Radeo RX 580, 4 Dell HD monitors.Canon 80d DSL camera with Rhode mic, Zoom H4 mic. Vegas Pro 21 Edit (user since Vegas 2.0), Camtasia (latest), JumpBacks, etc.