Path: utzoo!utgpu!water!watmath!clyde!bellcore!rutgers!mailrus!uflorida!gatech!gitpyr!byron From: byron@pyr.gatech.EDU (Byron A Jeff) Newsgroups: comp.sys.next Subject: Re: A/D for the NeXT computer Message-ID: <6629@pyr.gatech.EDU> Date: 22 Oct 88 14:18:58 GMT References: Reply-To: byron@pyr.UUCP (Byron A Jeff) Organization: Georgia Institute of Technology Lines: 26 In article eht@cs.cmu.edu (Eric Thayer) writes: ->> Does anyone know what is the bit-width of the D/A section for the sound ->> reproduction NeXT? - -> The press handouts at the intro claimed two 16-bit D/A's. - -What was in the BIX article was that an telephone codec sampled at -8 KHz using 8-bit Mu-law scaling. This was confirmed by the guy -who designed the speech recognition for the box (he's here at CMU). According to BIX article the stereo output (on which side the D/A's are) are CD quality. This typically means 16 bit @ 44.1 Khz sample rate. And two of them at that. The input microphone uses the codec. The 56001 looks like it'll need some fast, high resolution, linear, A/D converters to monitor real time inputs. Of course the cube has a syncronous serial input to the 56001. The article doesn't give a max speed on it but I'd guess at least in the 100K bps range. Does anyone have a spec on that? BAJ -- Another random extraction from the mental bit stream of... Byron A. Jeff Georgia Tech, Atlanta GA 30332 Internet: byron@pyr.gatech.edu uucp: ...!gatech!pyr!byron