Record left and right channel independently

As we know, normal sound card supports stereo channels. In some cases, you may just want mono channel data. You can combine two mono channel signals into stereo one so it can be captured by one sound card.   

Our audio record component  support recording the left and right channel to different files.

Here is an example in script.

Set WshShell = WScript.CreateObject(”WScript.Shell”)

set rec = CreateObject(”AudioCtl.AudioRecord.1″)

rec.DeviceIndex = 0

rec.DeviceLineIndex = 3

‘test save to mp3

rec.WaveFormatIdx = 15

rec.SetOutputFileName “stereo.mp3″

 

’set the wave format for the left and right channel

rec.WaveFormatIdxLR = 5

rec.SetOutputFileNameL “L.mp3″

rec.SetOutputFileNameR “R.mp3″

 ’start recording

rec.StartRecord 2, 44100

WScript.Sleep 10000

rec.StopRecord

 

‘Test, save to wav

rec.FileFormat = 0

rec.WaveFormatIdx = 31

rec.SetOutputFileName “stereo.wav”

’set channel wave format 

rec.WaveFormatIdxLR = 30

rec.SetOutputFileNameL “L.Wav”

rec.SetOutputFileNameR “R.Wav”

 

rec.StartRecord 1, 44100

WScript.Sleep 10000

rec.StopRecord

set rec = NOthing

 

 

This entry was written by admin on Saturday, April 15th, 2006 at 9:44 am and is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.