VAC is written and maintained by Eugene Muzychenko. This allows the user to setup and control the audio parameters of VAC directly from the PowerSDR console. PowerSDR version 1.6.0 (and above) has native support for VAC when using the DRM or DIGIx modes. WDM/KS Audio technology native for Windows 2k/XP/2k3.PCM format conversion between clients on either end of the VAC cable.Signal mixing (with saturation) between output port clients.

Almost no sound latency with maximal interrupt frequency.Floating point formats are not supported. Almost any of fixed point PCM audio formats (200.1000000 samples per second, 8.32 bits per sample, 1.8 channels).VAC version 4.0x is an upgraded version from 3.12. A computer PCI, Firewire or USB slot is not used.There are no external cables to degrade the sound quality or possibly pick up RFI.The entire audio stream is maintained in the digital domain - there is no multiple conversions of the signal from digital to analog and from analog to digital.There are some significant advantages to using VAC over a second sound card. Virtual Audio Cable (VAC) is a third-party software program that allows the rerouting and the emulation of a sound card in software rather than having to use a second sound card for audio analysis or use with digital mode programs such as MixW and WSJT.

4 channel virtual audio cable free