1x SP0256A-AL2 Narrator(TM) Speech Processor
The SP0256 (Speech Processor) is a single
chip N-Channel MOS LSI device that is
able, using its stored program, to synthesize speech or complex sounds.
The achievable output is equivalent to a
flat frequency response ranging from 0
to 5 kHz, a dynamic range of 42dB, and
a signal to noise ratio of approximately
35dB.
The SP0256 incorporates four basic
functions:
• A software programmable digital filter
that can be made to model a VOCAL
TRACT_
• A 16K ROM which stores both data
and instructions (THE PROGRAM).
• A MICRO CONTROLLER which controls the data flow from the ROM to
the digital filter, the assembly of the
"word strings" necessary for linking
speech elements together, and the
amplitude and pitch information to
excite the digital filter.
• A PULSE WIDTH MODULA TOR that
creates a digital output which is converted to an analog signal when filtered by an external low pass filter.
Features
• Natural Speech
• Stand Alone Operation with Inexpensive Support Components
• Wide Operating Voltage
• Word, Phrase, or Sentence Library,
ROM Expandable
• Expandable to 491 K of ROM Directly
• Simple Interface to Most Microcomputers or Microprocessors
• Supports L.P.C. Synthesis: Format
Synthesis: Allophone Synthesis
1X Genuine General Instruments SP0256A-AL2 Speech Processor
1x 3.12 Mhz Oscillator Crystal
2X 22pF Capacitors for the 3.12Mhz Crystal
1X Round 28 PIN DIP Socket
Please note these are rare and slowly vanishing from availability in this NOS condition. I am rethinking listing my very low remaining stock as I like to tinker with these great chips myself. If you have any questions please ask.