<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Jun 2, 2011, at 11:20 PM, Ted Langdell wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>QuadQuiz: What company used a 2" Quad machine for digital audio recording?</div><div><br></div><div>Ted</div></div></blockquote></div><div><br></div><div><br></div><div><b>And the answer is:</b></div><div>Denon, a subsidary of Nippon Columbia in Japan.</div><div><br></div><div>Details are found here:</div><div><a href="http://www.aes.org/aeshc/pdf/fine_dawn-of-digital.pdf">http://www.aes.org/aeshc/pdf/fine_dawn-of-digital.pdf</a></div><div><br></div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">In 1969-1971, Denon leased an NHK stereo PCM recorder and conducted numerous</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">test recordings. Retired Denon engineer Dr. Takeaki Anazawa told the author: 'We got a</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">lot of ideas about improvement of (the) system from these experiences." Denon's tests</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">also resulted in two commercial albums, the first commercial use of PCM digital technology.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">Indeed, the first commercial digital recording was Nippon Columbia NCB-7003,</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">"Something" by Steve Marcus, released January 1971. The only other commercial release</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">to come out of these early Denon/NHK recordings was Nippon Columbia NCC-8004,</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">"The World of Sutomu Yamashita," according to Anazawa."</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">Satisfied that PCM digital was an improvement over analog tape, Denon engineers</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">set out to develop their own VTR-based system. Their goals were improved audio quality</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">and multi-track recording capability, which then made the system viable in most commercial</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">recording settings of the 1970s. </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">In 1972, Denon unveiled the DN-023R, an 8-channel system featuring 13-bit resolution and a sampling rate of 47.25kHz. The system used a Hitachi (then called Shiba Electronics) 4-head open-reel broadcast VTR as its</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">storage format. </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i>(TL asks: Would this have been a Shibaden SV-7000, seen here transformed into a Merlin ME-68 on LabGuy's website?</i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><span class="Apple-style-span" style="font-size: medium; "><a href="http://www.labguysworld.com/Merlin_ME68.htm">http://www.labguysworld.com/Merlin_ME68.htm</a></span>)</i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><br></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i>Here's a photo of the Denon machine from:</i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><a href="http://www.sempre-audio.at/images/Report/100_Jahre_Denon/Denon_DN-023R_PCM-Recorder_670.jpg">http://www.sempre-audio.at/images/Report/100_Jahre_Denon/Denon_DN-023R_PCM-Recorder_670.jpg</a></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><br></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i>Looks line an SV-7000 to me.)</i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><br></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><img style="-webkit-user-select: none" height="521" width="674" src="cid:5F3379C9-B7A0-4818-8C8B-1E59CCC0A2EA"></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><i><br></i></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 14px; "><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 15px;"><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 14px;"><i><br></i></span></font></span></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">Anazawa noted: "We used the low-band mode of the VTR, for black and white (video). The reasons were stronger (performance) than color mode for tape dropout and less cost." Anazawa said, with the DN-023R, "we could edit music recordings and cut (LP) discs using advanced (preview) head" to control lathe automation.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">Denon deployed the DN-023R system immediately and used it to make commercial release</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">recordings throughout the 1970s.</div></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">There's a Billboard magazine article with pictures here:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 8px; "><a href="http://books.google.com/books?id=fSQEAAAAMBAJ&pg=PT31&lpg=PT31&dq=Denon,+digital+audio,+2%2522+Quad&source=bl&ots=UNjJuD5cy8&sig=cZ4Cep2qnya9iyqz_KWY26Tdk2U&hl=en&ei=CRTpTZfwDJL0swOyg4T3DQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CCUQ6AEwAQ#v">http://books.google.com/books?id=fSQEAAAAMBAJ&pg=PT31&lpg=PT31&dq=Denon,+digital+audio,+2%22+Quad&source=bl&ots=UNjJuD5cy8&sig=cZ4Cep2qnya9iyqz_KWY26Tdk2U&hl=en&ei=CRTpTZfwDJL0swOyg4T3DQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CCUQ6AEwAQ#v=onepage&q&f=false</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; ">More can be found in the AES Journal, <font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 14px; ">Volume 21 Number 7 pp. 535-541; September 1973.</span></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 9.5px/normal Helvetica; font-size: 15px; "><span class="Apple-style-span" style="font-size: medium; "><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 15px;"><b>How'd we get here:</b></span></font></span></div><div>I ran across this tidbit when investigating International Video Corp.'s use of Pulse <i>Interval</i> Modulation to record video with it's successful 1" helical machines.</div><div><br></div><div>Didn't find anything specific to IVC and PIM, but did run across a mention of Denon's use of Quad for PCM audio recording on Wikipedia's page about PCM.</div><div><br></div><div>See next post for more about IVC and PIM</div><div><br></div><div>Ted</div><div><br></div><br><div apple-content-edited="true"> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 14px; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Ted Langdell</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Secretary</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#0018ea" style="font: normal normal normal 12px/normal Helvetica; color: rgb(0, 24, 234); "></font></div></div></div> </div><br></body></html>