Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!gem.mps.ohio-state.edu!apple!coherent!next!aozer From: aozer@next.com (Ali Ozer) Newsgroups: comp.sys.next Subject: Re: Reading a CD player's digital output Message-ID: <111@next.com> Date: 30 Sep 89 00:32:14 GMT References: <5664@decvax.dec.com> Reply-To: aozer@NeXT.com (Ali Ozer) Organization: NeXT, Inc. Lines: 30 In <1989Sep28.165644.6764@ivucsb.sba.ca.us> Todd Day writes: >In article <5664@decvax.dec.com>, Dave Jedlinsky writes: >>I'm interested in connecting the digital output of a CD player (or, more >>specifically, a PCM recorder) to the digital input on a NeXT cube. > >What is the format of the digital input for the NeXT? If that port >simply goes to the synchrounous serial input on the 56000, then >things are easy if you also have a CD player that utilizes the >Sony data separator chip (Sony and Denon players use it, at least). >There is an app note from Motorola on how to insert a 56000 into >the serial data stream of a Sony CD player. Note that you'll have >to open up the CD player and AT LEAST do some tack soldering (one >wire). If you use the digital out of the CD player, you'll have >to get rid of all of the subcode information that's sent along >for the ride. This means you'll have to do some programming for >the 56000. However, I'll bet that someone already has an application >built for the NeXT machine for just plugging the CD player in. No, I haven't seen or heard of such an app; but it sounds like it is possible and would certainly be neat. If anyone does it and wants to distribute the schematics + source freely, please do so! There are also some third party products that will do what Dave wants: The Metaresearch "Digital Ears," Ariel's "DM-N Digital Microphone," and Singular Solutions "A/D64x Analog/Digital Interface." All allow recording 16 bit, 44.1 kHz stereo samples through the DSP port; the A/D64x also allows capturing data from the digital output of CD and DAT players. Ali Ozer, NeXT Developer Support Ali_Ozer@NeXT.com