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Softpedia Editor's Review for Virtual Audio Cable
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Connect several audio applications together in real time
Written by Mihaela Citea on October 15th, 2012
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.
Once you install the driver, you are able to access its control panel in order to configure the working parameters. While the configuring process might seem easy due to the organized interface, making the application work is quite a challenge. Therefore, before starting, it is strongly recommended to go through all the documentation carefully.
Some of the displayed parameters concern the driver, while others refer to each cable. The first item you can change is the number of virtual cables created by the program. Adding a new one displays a new item in the monitoring pane. You can view the number of detected streams and change the worker thread number and priority.
On the other hand, there are various other parameters to configure for each cable. Setting the maximum instances number, the sampling rate and bits per sample range and the channel number are just some of the options that you can modify according to your preferences. You can also enable the stream buffer watermark, the volume control, as well as channel mixing.
When the configuration process is over, you need to open an audio producing program that allows you to choose a playback device. The Audio Repeater application is the one that does the actual transfer, from the recording port to the other audio device. If more than one application sends audio streams to Virtual Audio Cable, the driver mixes the signal together.
Although it can be qualified as hard to use, Virtual Audio Cable promises to pass the audio signal with no quality loss and can prove useful once you get the hang of it.
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Virtual Audio Cable description
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Here are some key features of "Virtual Audio Cable":
· Up to 64 cables.
· 1..100 milliseconds per interrupt.
· Almost no sound latency with maximal interrupt frequency.
· Almost any of PCM sound formats (sample rate, size and number of channels). Number of bits per sample is limited to 32, and number of channels is limited to 256.
· Unlimited number of clients connected to each port.
· Sound mixing (with saturation) between output port clients.
· Synchronous mode transfer support to achieve maximal reliability.
· Control Panel application to dynamically configure cables.
· Audio Repeater application that transfers from any Wave In to any Wave Out port
Limitations:
· The trial version is feature limited What's New in This Release: [ read full changelog ]
· Fixed RtAudio buffer processing bug in Audio Repeater KS.
· Added clock rate display to Audio Repeater.
· Changed number of worker threads limit to a number of logical CPUs.
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