aehl@csd4.milw.wisc.edu (Donald J Aehl) (11/15/87)
Could anyone explain to me why I am not able to record the sound from an Apple IIgs speaker output with just a ordinary tape recorder and a stereo patch-cable? I have tried this a few times with both Music Construction Set and with The Music Studio and neither allows me to record the sound (music) with any clarity. When I play the sound back it is accompanied with a lot of static and noise in the background. I have heard that if you connect the sound output to the input of a stereo reciever and then into a cassette deck, the music can be clearly recorded. Why can't I do it with a normal stereo tape recorder (I don't own a stereo reciever). Does this problem have something to do with amplification? My feeling is that it does but I really don'y know much about sound elecxtronics. Any help or explanations would be greatly appreciated. (no I don't own MDideas' stereo card)
TMURPHY@WPI.BITNET (11/17/87)
The problem with recording is probably the impedance of the outputs/inputs used. I don't know what the GS has, but if it's a speaker connection it's probably 8 ohms, while a microphone input would be a few thousand ohms. In other words, they don't like each other. A standard audio input (line level) should work, otherwise try a phono level input. Chris Murphy Worcester Polytechnic Institute Bitnet: TMURPHY@WPI Arpanet: tmurphy%wpi.bitnet@talcott.harvard.edu
kamath@reed.UUCP (Sean Kamath) (11/28/87)
In article <8711170209.AA02996@wpi> TMURPHY@WPI.BITNET writes: > >The problem with recording is probably the impedance of the outputs/inputs >used. I don't know what the GS has, but if it's a speaker connection it's >probably 8 ohms, while a microphone input would be a few thousand ohms. >In other words, they don't like each other. A standard audio input (line >level) should work, otherwise try a phono level input. > >Chris Murphy >Worcester Polytechnic Institute >Bitnet: TMURPHY@WPI >Arpanet: tmurphy%wpi.bitnet@talcott.harvard.edu And the propable answer to this problem is to take a 10 ohm resister and short the leads, while it's hooked up to the microphone, to give it a ~8 ohm impedance. However, the question is, how many watts is the output power? . . . I think I'd use a bigger resister, but. . . Sean -- UUCP: {decvax allegra ucbcad ucbvax hplabs ihnp4}!tektronix!reed!kamath CSNET: reed!kamath@Tektronix.CSNET || BITNET: reed!kamath@Berkeley.BITNET ARPA: tektronix!reed!kamath@Berkeley <or> reed!kamath@hplabs US Snail: 3934 SE Boise, Portland, OR 97202 (I hate 4 line .sigs!)