Check the listing for details. Speakjet Speech Synthesizer 18-pin IC for Arduino / Raspberry PI. Listed at 49.99 USD. Be sure to watch my restoration videos on YouTube And check out and subscribe to my store: Scott Savage Techno Scavenger Speakjet Speech synthesizer 18-pin IC Be sure to check out my latest sound chip: SoundginZ Ready to add Speech to your project? The SpeakJet is a completely self-contained, single-chip voice and complex sound synthesizer. It uses a mathematical sound algorithm to control an internal five channel sound synthesizer to generate on-the-fly, unlimited vocabulary speech synthesis and complex sounds.The SpeakJet is pre-configured with 72 speech elements (allophones), 43 sound effects, and 12 DTMF Touch Tones. Through the selection of these sounds, and in combination with the control of the pitch, rate, bend, and volume parameters, the user has the ability to produce unlimited phrases and sound effects, with thousands of variations, at any time.The SpeakJet can be controlled simultaneously by logic changes on any one of its eight Event Input lines, and by a single I/O serial line, allowing for both CPU-controlled and stand-along operations.PDF Datasheet can be found online. (Ebay will not let me provide a link to it here.) Also available in my store: Soundgin and Vorax. Scott Savage Techno Scavenger AND - in case you are needing a small speaker for thisadd one of these to the cart for combined shipping.https://www.ebay.com/itm/275261131809 I have a lot of other Speech Chip Stuff in my store. See pictures for more detail. Photos are of actual item. Not stock photos. I tried to get all the angles, but if I missed something don't hesitate asking for more. 100% money back guarantee if not satisfied for any reason U.S. Seller - Fast shipping. Item will be packaged for shipping with extra care. I offer several shipping options, so be sure to review shipping methods for best price or delivery speed. I sell other interesting items like this, so be sure to check out my complete store: Scott Savage Techno Scavenger