LoopBe1 ~ Virtual MIDI Driver


LoopBe1 is an internal MIDI device for transferring MIDI data between computer programs. Basically LoopBe1 is an ‘invisible cable’ connecting a MIDI out port of an application to any other application’s MIDI in port. All MIDI data sent to the program’s output is channelled to the receiving applications in realtime. You may connect up to eight applications to LoopBe’s in port and up to eight applications to the out port, all sending and receiving at the same time.

LoopBe1 is a native Windows™ WDM kernel mode driver, so expect the lowest possible latency. Programs do not need to link with special libraries, so LoopBe1 works with every MIDI or DirectMusic™ capable application.

https://nerds.de/en/loopbe1.html

QmidiCtl ~ MIDI Remote Controller


QmidiCtl is a MIDI remote controller application that sends MIDI data over the network, using UDP/IP multicast. Inspired by multimidicast and designed to be compatible with ipMIDI for Windows.

https://qmidictl.sourceforge.io/

Soundsync ~ Cross-platform Virtual Cables


Soundsync is a web and desktop app to manage every audio source and every audio output in your home from a single interface. Link any audio source to multiple speakers connected to any devices on your home network. Soundsync will keep the music synchronized between all of them.

Features:

  • 🆓 Free to use
  • 🕸️ Work with any number of connected devices, audio sources, audio outputs and every link of your choosing
  • 🎶 Compatible with a lot of different audio sources (Spotify Connect with a premium account, Airplay, Hardware Audio input (line in / microphone), Linux system audio ; coming soon: Windows system audio, UPnP and more)
  • 🔊 Broadcast sound to any speaker connected to a computer (Windows, MacOS, Linux, RapsberryPi), a web browser (Chrome, Firefox) or a Chromecast and soon more
  • 🔗 Group speakers together to synchronize them to the same audio source
  • 🎛️ Control everything from a web browser
  • 🔓 Not linked to any external service, works offline, no account creation

github.com/geekuillaume/soundsync

SAR ~ Synchronous Audio Router


Synchronous Audio Router lets you route audio from any Windows application through a DAW (digital audio workstation) application, giving you an immense amount of control over your system’s audio. You can apply sophisticated effects, routing and switching, and combine the audio streams from each individual application any way you want, producing any number of output mixes.

If your applications of choice doesn’t let you select an audio device, SAR has you covered: you can define per-application routing rules which will override the Windows default audio device settings. You can even use pattern matching to define rules for groups of applications.

It’s also fast. SAR operates inline with your existing ASIO driver, adding no additional buffer latency to your DAW, and uses WaveRT for direct low latency transport of audio between applications. This is in contrast to many other “virtual audio cable” type drivers which often require buffer sizes as large as 50-100ms to work reliably.

sar.audio
github.com/eiz/SynchronousAudioRouter/releases

VB-CABLE ~ Windows Virtual Audio Cable


VB-CABLE is a virtual audio device which works as a virtual audio cable in MS Windows. All signals coming to the CABLE input are sent to the CABLE output.

It’a simple to make computer audio recordings by connecting a player app to a recording app.

VBAudioCable

www.vb-audio.com/Cable

SoundFlower ~ Mac Virtual Audio Cable


Soundflower is a MacOS system extension that allows applications to pass audio to other applications. Soundflower is easy to use, it simply presents itself as an audio device, allowing any audio application to send and receive audio with no other support needed. ~ code.google.com

Downloads:

Tutorials:

Balanced Versus Unbalanced Audio Interconnects


Clearly, the available literature prescribes balanced interconnection as the absolute best way to interconnect audio equipment. The use of entirely balanced interconnection with both ends of the shield connected to chassis ground at the point of entry provides the best available performance.

Source: Grounding and Shielding Audio Devices