WiNRADiO G65DDC User’s Guide
47
digitized data (either undemodulated IF signal or demodulated audio) directly
from the WiNRADiO receiver, eliminating unnecessary conversions between
the digital and analog domains, reducing distortion and improving signal
quality. For more information about the VSC, please refer to the webpage
www.winradio.com/vsc
The VSC control buttons become available once the VSC is installed:
Engaging the
VSC
button connects the selected receiver to the virtual sound
card. Using the
IF
button, you can select the entire contents of the
demodulator spectrum to the VSC; the
Audio
button only sends the filtered
and demodulated audio.
The VSC IF signal is sent in I/Q (in-phase and quadrature) form, 16 bit, stereo.
The I/Q outputs are at baseband (zero frequency) and the target application
must be able to accept these parameters. Any demodulation mode may be
selected for the IF output - this setting is not relevant as the VSC IF output
sends a raw spectrum without any filtering or demodulation.
The sampling rates for both the VSC audio and IF outputs can be set
independently, using the VSC Set-up function under the Options top
menu bar.
To use the VSC for audio output, select the required demodulation mode and
engage the VSC Audio button. This will connect the receiver’s demodulator to
the VSC stream. The demodulated audio will be affected by all the various
settings normally available for the demodulation, such as bandwidth, audio
filter, etc.
VSC can only be active on one virtual receiver at a time and is indicated by the
letters
VSC
appearing on the corresponding RX1, RX2 or RX3 tabs. You have
to deselect VSC from the active virtual receiver before it can be used on
another virtual receiver.
