Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!apple!agate!ucbvax!hplabs!hpfcso!hpfcdj!myers From: myers@hpfcdj.HP.COM (Bob Myers) Newsgroups: sci.electronics Subject: Re: Splitting audio signal from Cable television Message-ID: <17660025@hpfcdj.HP.COM> Date: 3 Oct 89 18:05:32 GMT References: <3192@uafcveg.uucp> Organization: Hewlett Packard -- Fort Collins, CO Lines: 28 >I am interested in knowing if anyone knows of a way to split the audio >from a television cable box before it goes into the television. For instance >if there were some type of inexpensive device out there that was connected >between the cable box and the television that would seperate the stereo sound >signals and send it to two audio jacks that could then be connected to audio >speakers. This would have the effect of producing stereo TV regardless of >whether your TV was stereo or not. It's possible, but perhaps not as simple/inexpensive as you would like. The audio component of a TV signal rides on a "subcarrier" which is located at a known point with respect to the main carrier frequency (which is where the video lives). The easiest way to get the audio is to simply hook up a TV tuner, which typically provide separate audio and video outputs at certain intermediate (IF) frequencies, with the intention that these then go on to the proper stages in a TV receiver. If you can find and properly connect a tuner, then all you need is the appropriate receiver to connect to the audio IF output. There may be a commercially-available unit which does the whole job, and provides stereo audio for your amplifier, but I'm not presently aware of one. The simplest solution, if it fits your budget, is to get a stereo VCR and use its audio outputs. The VCR includes a tuner, and works as described above. Bob Myers KC0EW HP Graphics Tech. Div.| Opinions expressed here are not Ft. Collins, Colorado | those of my employer or any other myers%hpfcla@hplabs.hp.com | sentient life-form on this planet.