Guest bootneck Posted August 10, 2005 Share Posted August 10, 2005 Im fitting 4 small cctv cameras to a pc with dvr card that has one input for sound. The cctv cameras have a built in mic, is it possible to connect all four mics together in parallel to the pc ? Thanks Royal Link to comment Share on other sites More sharing options...
Rich Posted August 10, 2005 Share Posted August 10, 2005 I'd say not no, just like you wouldn't connect 4 video signals in series. Link to comment Share on other sites More sharing options...
breff Posted August 10, 2005 Share Posted August 10, 2005 you could connect them through an audio mixer The opinions I express are mine and are usually correct! (Except when I'm wrong)(which I'm not) Link to comment Share on other sites More sharing options...
Guest Rockford Posted August 11, 2005 Share Posted August 11, 2005 An analogue audio feed, just like a CCD video feed is a "baseband" data transmition, meaning that there can be no other concurrent services on that line as that one service consumes all the available spectrum. As someone else has said, you'd need some kind of "multiplexing device" or other to allow that to happen. I'm sure such devices exist. likely however, the capture card will FORCE you to bind the one audio signal to a video signal. This could present logistical quandries when you need to find a piece of audio belonging to camera 4, when the sound has been encoded as part of camera 1 for example... my advice: more trouble than its worth!! Link to comment Share on other sites More sharing options...
Guest bootneck Posted August 12, 2005 Share Posted August 12, 2005 thanks for that, ive got at 2 audio channels to connect to which is better than none i suppose. I think audio is a massive plus on a cctv system though. Link to comment Share on other sites More sharing options...
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