Optional Amplifier and Loudspeaker: In addition, a little "off the shelf" D-class audio amplifier can be fitted on the PCB. The mixed LM741 output signal is available at the output mini jack on the left side. Two input pots on the right and corresponding trimmers on the left side are used to determine the two signal levels for the mix.
In addition, pitch control is currently no supported, so the speech will be monotonous.Ĭassette Sound Input Port and Audio Mixer: Talker/80 is equipped with two input stero mini jacks - one for the output from the MikroElektronika speech daughterboard, and one can be connected to the TRS 80 Cassette Output Port for sound (or any other source, really).
Original software works without patches (e.g., VS48 and VS-100DEMO.BAS etc.). Talker/80 uses the same method of emulation (mapping to DECtalk phonemes). Also used the Votrax SC-01, but was / is not compatible with the TRS Voice Synthesizer. VS-100 Voice Synthesizer from Alpha Products Emulation: another classic TRS-80 voice synthesizer. Original software such as the TRS Voice Synthesizer BASIC Demo Program, and "Talking Eliza" work out of the box, but note that the emulation is only 80% faithful or so. TRS Voice Synthesizer Emulation: the emulation in terms of DECtalk as just described is good enough to produce understandable speech, but it sounds different than the Votrax SC-01-A chip. Text to be spoken can be sent directly to IO port 11, and the status of the speech synthesizer is checked by reading from port 11. The DECtalk and Epson modes produce superior speech quality, and text-to-speech is performed by Talker/80 itself, i.e., no breaking down into phonemes is required. Talker/80 emulates the SC-01 by means of DECtalk here. Both use the Votrax SC-01 as their underlying speech chip. DECtalk mode is used to implement emulations of two classic TRS-80 Voice Synthesizers: the official TRS Voice Synthesizer from Tandy Radio Shack, and the VS-100 Voice Synthesizer from Alpha Products. Hence, a simplified control language for the S1V30120 is offered as well, the so-called Epson mode. The DECtalk mode is very powerful and versatile, but the DECtalk control language can be difficult to program.
Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US719193A priority Critical Application filed by Apple Computer Inc filed Critical Apple Computer Inc Priority to US08/632,121 priority patent/US5717827A/en Application granted granted Critical Publication of US5717827A publication Critical patent/US5717827A/en Assigned to APPLE INC. Original Assignee Apple Computer Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US08/632,121 Inventor Shankar Narayan Current Assignee (The listed assignees may be inaccurate.
Google Patents Text-to-speech system using vector quantization based speech enconding/decodingÄownload PDF Info Publication number US5717827A US5717827A US08/632,121 US63212196A US5717827A US 5717827 A US5717827 A US 5717827A US 63212196 A US63212196 A US 63212196A US 5717827 A US5717827 A US 5717827A Authority US United States Prior art keywords quantization vectors sequence speech quantization sound segment Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5717827A - Text-to-speech system using vector quantization based speech enconding/decoding US5717827A - Text-to-speech system using vector quantization based speech enconding/decoding