VirtualMIDISynth is a software MIDI synthesizer implemented as a Windows multimedia user driver, accessible as a standard MIDI Out device. On Windows XP / Vista / 7 / 8 / 10 (both x86 and x64), implemented as a MIDI Out virtual device.

A Free Virtual MIDI Driver

Peta topografi indonesia map. LoopBe1 is an internal MIDI device for transferring MIDI data between computer programs. Basically LoopBe1 is an 'invisible cable' to connect a MIDI outport of an application to any other application´s MIDI inport.
All MIDI data sent to the program´s output is channeled to the receiving applications in realtime.
You may connect up to 8 applications to LoopBe's inport and up to 8 applications to the outport, 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.

A System Tray Icon to Mute MIDI

LoopBe1 comes with a Systray Icon. You can switch it on and off like a hardware device and view its status.

MIDI Feedback - Shortcut Detection

Think of an application opening in- and outport of LoopBe1 and connecting both ports via MIDI through: you would get an infinite loop of MIDI data, circling in realtime, which would seriously slow down the whole computer. As modern MIDI applications may open several ports, this happens all too easily.

LoopBe1 has a powerful shortcut detection to avoid MIDI feedback. If a feedback is detected, LoopBe1 will immediately mute its port, interrupt the loop and popup a message. After disabling the malicious MIDI through within your program you can easily enable LoopBe1 again at its systray icon.

LoopBe1 Is Free

Download it now. LoopBe1 is free for non-commercial, personal use only. Any commercial use beyond a 30-day evaluation period requires purchase of a commercial use license. Please visit our order page.

Companies or Persons who want to bundle LoopBe1 with their own application have to buy a Company License. Companies can choose between three license models:

• Bundling License - LoopBe1 can be re-distributed to customers as part of another product. Comes with silent nsis installer to integrate with your own installer. Royalty free.
• Branded Bundling License - Design your own name, logo, MIDI port and device description for LoopBe1. We will compile and link it for you. Can be signed with our signature or with yours. Comes with nsis installer script source. Royalty free.
• Source Code License - Full source code of all parts of LoopBe1. Royalty free.

Please contact us for pricing and details.

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Virtual audio devices represent the filter graphs that render and capture audio content. The system audio driver (SysAudio) uses the available hardware and software components to determine the filter graphs to build.

For more information about the system audio driver, see SysAudio System Driver.

SysAudio's clients include DirectSound and the WDMAud system driver, which serves as the interface between WDM audio drivers and the audio-specific Microsoft Windows Multimedia APIs waveIn, waveOut, midiIn, midiOut, mixer, and aux (described in Microsoft Windows SDK documentation).

The KsStudio utility in the Windows Driver Kit (WDK) is an example of an application that bypasses SysAudio and allows users to construct filter graphs manually.

Following PnP device enumeration, SysAudio takes stock of the registered audio hardware and software components in order to determine how to construct the various audio filter graphs that its clients might require.

After determining the list of filter graphs that it can build from the available hardware and software components, SysAudio registers these graphs as virtual audio devices for playback, recording, MIDI input/output, and mixing. SysAudio reserves the registry category KSCATEGORY_AUDIO_DEVICE exclusively for its virtual audio devices. Adapter drivers should not register themselves in this category.

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A SysAudio client can treat a filter factory for a virtual audio device similarly to a filter factory for a hardware or software component. When asked by a client to instantiate a particular pin on a virtual device, SysAudio constructs the graph automatically and manages the graph's internal pin connections transparently to the client. This allows the client to treat a filter graph as a single filter, thereby avoiding complexities of graph management such as inter-filter communication.