Using the input port, an application like a music player records the audio signals and sends the message to a destination software program, such as a sound analyzer or processor. The tool package introduces the concept of ‘virtual cables’, which denotes a set of virtual devices containing output and input ports. While this program acts like a bridge, the applications are able to transfer audio streams among themselves. In simple terms, Virtual Audio Cable is a versatile audio driver specifically designed to connect multiple audio apps. For everything to work properly, the applications you use with Virtual Audio Cable should be able to support custom audio output devices. Now you set yer system sounds to one loopback device, tell Reaper to use it for input, send its output to another loopback device, and connect the output of the other loopback device to the soundcard.Įdit: I used to recommend to the Virtual Audio Cable, but I've found out that it too is freemium, I've changed it to the freeware and open source Synchronous Audio Router.It’s important to understand, though, that the audio software’s efficiency depends on other apps’ settings. Reaper even reloads the last used project by default though you will have to enable monitoring each time. It sounds involved, but can actually be started pretty quickly. You then start the application, create a track, select your loopback device for the input and yer sound-card's ASIO driver for the output, plug in your VST effect (Reaper comes with a nice assortment of simple fx), and enable monitoring on the track (right-click the record enable, or check the help for info on doing this). What is crucial here, is that it can do real-time audio effects, since e.g. Reaper is one inexpensive possibility and it has a non-expiring demo. Protools can also probably be used, but is overkill for this application. You will then need a platform that speaks ASIO, and as such, probably uses VST effects. If it does not, use ASIO4ALL, which provides an ASIO driver for almost all audio devices. If your sound-card is not an audiophile device, then it probably doesn't come with an ASIO driver although I suggest you check anyway. It works with ASIO drivers for low latency. This method requires two loopback devices. The problem with VB Audio Cable and Virtual Audio Cable, is they only allow one loopback device with the free version. Thus, the plug-in is not in the driver, but you can still get yer fx by sending sound to the default sound device. the default Windows sound device output, set to a virtual device, and send it to an audio processing application. Such software creates new virtual send and receive devices that can be used to take e.g.
One way to accomplish the same thing although it is not technically what you are asking for, is to use a virtual audio loopback device such as Synchronous Audio Router.
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