Broadcast Tools DSC-20 Instalační manuál stáhnout pdf (Strana 17)

Preliminary 8-2002 RSHD Smartcaster Installation Manual

This file represents the loudest sound that your audio cards can reproduce without

splatter. If you open this file with your audio program, you will see it is very loud.

I recommend setting up the audio cards in your system so that this file is a source on the

console, and adjust all the meters in the system to this file. Set the mixer just to the loud

side of the highest normal position, and set the inputs in software to show the record

levels as close to maxed out in your recording/editing program as is possible.

The idea here is to get a “Unity Gain”, so if you record the output of your editor while it

plays the original file back, looking at the newly created file shows no gain added to the

signal.

Then look at “Normal” program levels, from a music source; notice because the average

energy is much less, the meters on your record application look low. You can set the

record levels on the computer’s input to “Look” hotter, but use caution, if you set them

too hot, you will get various degrees of audio distortion, depending on the average levels

of the particular audio source.

Do not use a single pitched tone to adjust “total” or “MAXIMUM” levels into the record

application. You can use a steady single tone to adjust balance in stereo gain. As both

the peak features, and the compression system will cause a digital system set up this way

to have the resulting input levels to be very low for most recording. You have more

usable headroom in a digital system because the noise floor should be lower to start with

than analog.

In setup of levels you have two goals: getting uniform gain from record input to

playback, and avoiding over-modulation that would cause the dreaded “Splat” sound.

In the Smartcaster record screen, just set the record output of the RIDZ so that the white

noise file playback above is into the last yellow bar graph of the record level display,

while showing +3 db on the console. I have found this to be a good setting, one that will

allow you to accommodate the portion of the air staff that insists on recording their audio

so hot that the meters click on the stops, without having distortion from overloading the

audio card inputs. But yet still allows you to have a soft recording that isn’t clear into the

noise floor of the system.

Do what ever it takes to get this right, these new systems will allow importing audio from

the Internet, and you do not want to have to make changes to the system later.

I offer no opinion about “Normalizing” with digital audio ripper / editor programs. That

is a mater of taste as well as what other audio processing the station uses.

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