<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><div>THANK YOU, Ed - wonderful explanations!!</div><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><br><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> ebruckert Bruckert <edbruckert@gmail.com><br><b><span style="font-weight: bold;">To:</span></b> DECtalk Discussions <dectalk@bluegrasspals.com><br><b><span style="font-weight: bold;">Sent:</span></b> Wed, May 18, 2011 10:01:33 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [DECtalk] Speak windows older than 4.3<br></font><br>
<div>A short DECtalk history lesson of sorts. The commercial availability of the first signal processing chip by TI finally made the large compute requirements of the vocal track model possible. It was specifically designed to do difference equations which is what the filters need doing lots of multiplies. So DECtalk was confined to hardware only solutions until the power of the PC got sufficient to be able to do the computes in real time. Back in the days the Dennis and I worked on DECtalk took 30 min. of computer time on a VAX to generate one minute of speech. That's why the first PC product was a hardware product because it had to have the signal processing chip.</div>
<div>The speak program has never really changed I've used the same one basically forever. It uses simple calls to the dapi which is the DECtalk application interface. All programs had their own application interface until the advent of SAPI. SAPI simply converts a standardized set of synthesizer calls in to dapi calls to perform the same function. That is why the speak source code has always been public domain and hasn't changed much, I can't remember if any versions of speak only work with a certain version of DECtalk but if that occurred it was a long time ago and I can't remember.<br>
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<div class="gmail_quote">On Tue, May 17, 2011 at 6:52 PM, Jayson Smith <span dir="ltr"><<a rel="nofollow" ymailto="mailto:ratguy@insightbb.com" target="_blank" href="mailto:ratguy@insightbb.com">ratguy@insightbb.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="gmail_quote">Hi,<br><br>Corine, Snoopi or Ed are probably the only ones who would even know if such<br>a thing ever existed. Were there ever Windows-based Speak windows for any<br>
DECtalk version older than 4.3? Also, back before Windows Speak windows, was<br>DECtalk marketed as a software product for Vax and/or other platforms, or<br>just as a hardware product like the DTC01, DECtalk PC and PC2, and the<br>
DECtalk Express?<br>Thanks.<br>Jayson<br><br>_______________________________________________<br>DECtalk mailing list<br><a rel="nofollow" ymailto="mailto:DECtalk@bluegrasspals.com" target="_blank" href="mailto:DECtalk@bluegrasspals.com">DECtalk@bluegrasspals.com</a><br><span><a target="_blank" href="http://bluegrasspals.com/mailman/listinfo/dectalk">http://bluegrasspals.com/mailman/listinfo/dectalk</a></span><br>
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