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Record Channels

VRS can record 1 to 64 channels. These inputs could be you from your standard sound device, additional sound cards installed in your computer or to the USB port, multichannel sound cards or devices or a professional telephony board.

When using ordinary stereo sound inputs VRS lets you split and record with the left and right channels as separate mono sources. This way a standard stereo input could be used to record 2 audio input sources. To split 2 mono inputs into one stereo input you will need a Y cable - ask at your local electronics store.

To change the number of channels or lines to record, use the Add or Remove buttons. To setup the channel, click on the "Properties" button or double click on the line.

See Channel Properties for more information about channel setup. The channel properties are important and should not be skipped.

Hardware record sample rate

This is the sample rate that VRS uses to input audio from the sound card(s). Check the documentation of your sound card for supported sample rates.

By default if you are using an audio compression codec (see the Recording tab) that sample rate will be used. This is the rate set when you set the wav file codec, or 8000 if you select GSM. If you select mp3, we recommend you specify a hardware sample rate.

For telephone recording or basic voice logging the recommended sample rate is 8000 (if your sound device supports it).

Virtual Audio Sources

VRS can also record from other audio sources that are from other computers on the network (or even over the internet).

This can be used for a number of different applications. It is most often used with the Express Talk SIP Softphone to record the VoIP calls. See www.nch.com.au/talk for more information. Express Talk v 1.01 or later is required.

Run Server on TCP/IP Port

This port must be the same as specified in all the source software. By default it is 4080 and you should leave it as that unless something else on this computer needs to use that port. You must open that port with your firewall to allow connections.