Path: utzoo!utgpu!watserv1!watmath!att!occrsh!uokmax!apple!usc!snorkelwacker!bloom-beacon!eru!hagbard!sunic!news.funet.fi!assari.tut.fi!mt87692 From: mt87692@lehtori.tut.fi (Tsokkinen Mikko) Newsgroups: comp.sys.amiga Subject: Re: AUDIO IN ??? Message-ID: Date: 10 Sep 90 21:38:25 GMT References: <29696@nigel.ee.udel.edu> <45585@cornell.UUCP> Sender: news@funet.fi (#News ) Organization: Tampere Univ. of Technology, Finland. Lines: 48 In-Reply-To: johnhlee@svax.cs.cornell.edu's message of 10 Sep 90 16:16:42 GMT In article <45585@cornell.UUCP> johnhlee@svax.cs.cornell.edu (Johnny H. Lee) writes: > In article <29696@nigel.ee.udel.edu> NJ_GOKEM%FANDM.BITNET@pucc.princeton.edu writes: > [...] > )Now, I am incredibly lazy, and I don't want to switch cables, and I like > )to listen to MTV orso while playing with the computer etc. > )...] > )Does anyone know, if I can hook up any line-output sound-device to the AUDIO > )IN? Or does it need to be something else? > [...] > )Can I just hook up the VCR to this AUDI pin on the serial port, or is than > )a very big NONO! > ) > )Thanks a lot! Nils Gokemeijer (NJ_GOKEM@FANDM) > ) (NJ_GOKEMEIJE@FANDM.bitnet) > According to the new blue-cover _Amiga Hardware Reference Manual_ from > Addison-Wesley, the AUDIO IN pin is an analog audio input whose signal > is mixed in with the output of the right channel audio from the Amiga. > It is intended for use by a modem so that the modem's line-monitoring > sound can be mixed and heard with the Amiga audio. The AUDIO IN is > not used nor can it even be examined by the CPU. If AUDIO IN works similar to CBM64 the output is mixed to computers internal sound according to volume level and filter (powerled). Actually in CBM64 other filter settings (trigger, noise etc.) affected the AUDIO IN too. > The jist of all this is that it seems you can do exactly what you want. > Now as for the line levels, I have no idea. Watch out for ground loops > and different ground voltages. Of course, you use this information at > your own risk. You take responsibility for blowing up your computer, > and I'll take responsibility for blowing up mine. :-) ^^Sounds fair! I didn't blow up my CBM64 by connecting my ghettoblaster to it (if this makes you more comfortable). MIT Hardware: Pal B2K rev6.2, Kick1.3, 1MB chip, MC68010, 2 internal 3.5" drives Software (typical setup): QMouse1.6, Setpatch r, Tracksalve 01nsu, 20track bootrad, FastFonts, Conman, ARP, Overscan screen(734*284) -- Mikko "Assembler rules OK!" Tsokkinen Internet mt87692@tut.fi : UUCP tut!mt87692 : Bitnet mt87692@fintut