Virtual Audio Cable is a multimedia driver designed to connect one or more audio applications in order to transfer audio streams between them. This software introduces the 'virtual cables', which refer to a set of virtual audio devices containing input and output ports. Practically, the input port records the audio signal (for example, from a music player) and sends it to the destination program (such as a sound processor or analyzer) using the output port.

Features
Local (console) session only (does not work via Remote Desktop or Terminal Services).
Windows 5.x, 6.x and 10.x platforms (32-bit and 64-bit).
Up to 256 virtual cable devices (some systems limit number of MME devices).
1..20 milliseconds per interrupt/event.
1..100 pin instances.
Almost any of fixed point PCM audio formats (1000..384000 samples per second, 8..32 bits per sample, 1..8 channels). Floating point formats are not supported.
Almost no sound latency with maximal interrupt/event frequency.
RTAudio support with notification events, clock and position registers. Clock registers are bound to Virtual Cables so all streams in each cable are coherent.
Unlimited number of Kernel Streaming clients connected to each port.
Signal mixing (with saturation) between output port clients.
PCM format conversion (sampling rate, bits per sample, number of channels).
Volume control features (both attenuation and boost).
Channel scattering/gathering mode.
Watermark control technique to improve stream stability with unstable applications.
Stream buffering technique to partially compensate bad application buffering algorithms.
Control Panel application to configure cables and watch their state.
Audio Repeater application that transfers from any recording to any playback device.

System requirements
Win 5.1..10.x (Windows XP/2003/Vista/Server 2008/Win7/8/8.1/10) platforms, 32-bit or 64-bit.
Any hardware suitable for a host OS.
A native hardware or a fully virtualized environment (VMware Server/Workstation, VirtualBox, VirtualPC etc.). With partial virtualization (VPS, Virtuozzo etc.), only host OS installation is possible (see VAC user manual for details).

Home Page -