LiveScrypt User Guide
Adjust audio gain
Adjust audio gain
You can adjust the gain for XLR, ¼" TRS, RCA, and 3.5 mm inputs using the touch screen, web interface, and AV
Studio when your LiveScrypt device is paired with your AV Studio team.
.Adjusting the
Input Gain
for an analog audio source affects the volume for that audio source sent to the
cloud for transcription and what you hear in the headphone jack. Be aware that excessive amounts of gain
can increase the perception of noise that may be present in the audio signal and could affect the accuracy of
the transcription.
This table offers some guidelines for adjusting the gain at the various audio input ports on the LiveScrypt
device for common types of audio input devices. You should add the suggested gain to the audio input to get
an average signal to register at a nominal level in the VU meter (i.e. where the green bars change to yellow).
The actual amount of gain needed depends on the strength of the original audio signal.
Table 5
Audio input port gain guidelines
Audio source
Input
port
Gain
Dynamic microphone
XLR
Add +50 to +60 dB gain to the audio input port.
Electret microphone
XLR
Add +18 to +40 dB gain to the audio input port.
3.5 mm
Add +6 to +12 dB gain to the audio input port.
Wireless microphone
receiver
XLR
Add +18 to +40 dB gain to the audio input port.
3.5 mm
Add +6 to +12 dB gain to the audio input port.
Condenser microphone
with phantom power
XLR
Add +40 to +60 dB gain to the audio input port.
Mobile phone or other
consumer line level device
TRS
Add +6 to +12 dB gain to the audio input port.
XLR
Add +6 to +12 dB gain to the audio input port.
RCA
1
Nominal
Professional mixer
TRS
Nominal
XLR
Nominal
RCA
Not recommended.
1 To avoid unwanted signal noise on the RCA ports, we recommend adding no more than 12dB of gain to the RCA ports or
when RCA/3.5 mm is used.
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