Connect audio sources and check levels
The LiveScrypt device accepts multiple audio sources from cameras, digital mixers, and microphones. Embedded audio from SDI, HDMI, and USB (UVC) video sources are extracted. A single, combined mono signal is sent to the cloud for transcription.
When connecting USB web cameras and microphones, make sure to use the USB ports on the rear panel of the LiveScrypt device. USB devices must be UVC/UAC compliant
Analog audio inputs:
- Two mono XLR/TRS combo jacks, + 4.0 dBu up to 12.3 V RMS (+24 dBu):
- XLR mic-level input (balanced), supports +48 V phantom power
- ¼" TRS professional line-level input (balanced/unbalanced)
- One 3.5 mm stereo mic-level input (unbalanced)
- Two mono RCA (pair) consumer line-level inputs (-10 dBV)
Phantom power is applied to both XLR ports. Connecting devices that are not designed for phantom power when phantom power is enabled can seriously damage those devices. Always check the phantom power LED before connecting devices to the XLR ports. To enable phantom power, see Enable or disable phantom power.
To connect audio sources and check audio levels:
- Connect your audio sources to the ports on the rear panel of the LiveScrypt device.
- Power on the LiveScrypt device, see Connect the network and power on.
- Test your audio levels (for example, speak into connected microphones). You can monitor the volume in the headphones and using the VU meter on the touch screen, see Monitor audio.
- (Optional) From the touch screen, tap Settings
and then tap Audio to open the Audio options where you can add gain to the XLR, ¼" TRS, and RCA ports as required. For details about adjusting the audio gain, see Adjust audio gain.
Audio 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. | |
| RCA1 | Nominal | |
| Professional mixer | TRS |
Nominal |
| XLR | Nominal | |
| RCA | Not recommended. |
For technical details about the audio inputs, see Audio inputs.
For tips on how to optimize your audio signal for the best transcription performance, see Optimize audio performance.
