ChipCorder speech recording and playback device based on the ISD1210S chip. Scheme, description

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ChipCorder speech recording and playback device based on the ISD1210S chip. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Calls and audio simulators

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A device based on the ISD1210S chip of the ChipCorder family from Winbond Electronics is designed for recording and high-quality playback of sound fragments up to 10 seconds. It is intended, first of all, for "voicing" household appliances and toys, but can be used in industrial automatic voice announcement circuits.

ChipCorder speech recording and playback device based on ISD1210S chip
Rice. 1 Appearance ChipCordera

An idea of the structure of the ChipCorder chip is given by the diagram shown in Figure 2.

ChipCorder speech recording and playback device based on ISD1210S chip
Fig. 2

Inside it are a microphone amplifier with an AGC system, smoothing and noise suppression filters, an output ultrasonic frequency converter and a multi-level memory array. Each memory cell is capable of receiving one of 256 voltage values. Additional A/D or D/A converters are not required.

The device has a unipolar supply of +9V (or +5V, if you do not install the 78L05 stabilizer, for example, if the power is supplied from the computer's power supply), automatic standby mode, 100 recording cycles and 000 years of storing the recorded message. The overall dimensions of the board are 100 x 60mm.

To control the device, three buttons PLAYE, PLAYL, REC are displayed. Pressing the PLAYE button once plays the entire message, pressing the PLAYL button starts playback, and releasing it ends it. REC button to turn on recording. Only one message is recorded, stored and played back at a time. Each subsequent one is recorded "on top" of the old one.

Schematic diagram of ChipCordera is shown in fig. 3

Rice. 3 Schematic diagram of ChipCordera

Publication: evm.wallst.ru

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