User manual

P1 Audio Processor User Manual Page 23
The 1kHz square wave signal was chosen to ensure that the
recording device metering gives an accurate indication of the PEAK
level being fed to its recording input. Many ‘peak’ reading meters still
have a finite ‘integration’ time so they will display correctly the peak
level of the more usual tone based test signals but under represent
the actual peak voltage value of very dynamic audio. The use of a
50% cycle square wave test signal ensures correct peak level
indication.
SETTING THE OUTPUT GAIN USING ‘REAL AUDIO’
Whilst setting the recording chain levels using the test signal is
recommended, it is possible to do it using any source of dynamic
audio material either ‘live’ or pre-recorded.
Set-up your normal recording chain as shown below, so that the
audio source is being fed into the P1 (use the input socket to suit the
type of source material) and from the P1’s LINE OUT into one
channel of your recording device.
Adjust the P1’s input gain until the red LIM LED just lights during the
loudest part of the source material.
Now set your recording device to monitor the incoming audio signal
level on its record meter. If your recording device has a
recommended input level setting for best audio performance, then