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<TITLE>Re: [sdiy] SpeakJet Module possibilities</TITLE>
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The current Speakjet is a fine product for speech synthesis. The current version is based on a PWM modulated carrier of 8 kHz. So your max bandwidth is 4 kHz. The manufacturer has stated the Speakjet 2 will have a more "normal" synthesizer architecture (like ADSR) and higher bandwidth.<BR>
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So we are waiting for the second version of the chip before doing module design. Using a microprocessor with A/D inputs to convert voltages to controls strings allows a kind of babble box which is fun.<BR>
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<B>From: </B>"J. Larry Hendry" <jlarryh@iquest.net><BR>
<B>Date: </B>Wed, 4 Aug 2004 12:05:14 -0500<BR>
<B>To: </B><Robotboy8@aol.com><BR>
<B>Cc: </B>"synth DIY" <synth-diy@dropmix.xs4all.nl><BR>
<B>Subject: </B>Re: [sdiy] SpeakJet Module possibilities<BR>
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<BLOCKQUOTE><FONT SIZE="2"><FONT FACE="Arial">This has already been done. Brice Hornback had one in his PSIM-1 module at AHMW 2004 this past spring. It was set up doing a random babble that was very vowel like. If I am not mistaken, you must drive it serially. Direct voltage control is not possible. It sure works well with the PSIM-1 (which gives you 4 programmable input voltages).<BR>
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<FONT SIZE="2"><FONT FACE="Arial">Brice can be found at:<BR>
bdh@cyberbound.net<BR>
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<FONT SIZE="2"><FONT FACE="Arial">His website with some speakjet info is at:<BR>
http://www.synthmodules.com/<BR>
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<FONT SIZE="2"><FONT FACE="Arial">Larry H<BR>
</FONT></FONT><BLOCKQUOTE>----- Original Message ----- <BR>
<B>From:</B> Robotboy8@aol.com <BR>
<B>To:</B> synth-diy@dropmix.xs4all.nl <BR>
<B>Sent:</B> Wednesday, August 04, 2004 10:54 AM<BR>
<B>Subject:</B> [sdiy] SpeakJet Module possibilities<BR>
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<FONT SIZE="2"><FONT FACE="Arial">Has there been any serious thought into using a SpeakJet in module? Someone seems to mention them on this list every couple of weeks, but nobody seems to have taken the idea anywhere. I've looked at the manual and it seems like you could pretty much use the thing as a VCO with vowel sounds instead of waveforms, but I'm not too sure about that (I also don't know if it'd be linear or expo, though since I have no other modular equipment that isn't so big of a deal for me as many others on this list).<BR>
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-eric</FONT></FONT> <BR>
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