40 Second Message Recorder Kit with Looping Option – CK1213
Our CK1213 40 Second Voice Recorder Kit uses the ISD1740 chip. The sampling frequency of the chip can also be adjusted from 4 kHz to 12 kHz with an external resistor, giving greater flexibility in duration versus recording quality. DIY K188.
Information Storage Devices are one of the leaders in solid state audio recording & playback devices. The latest ISD series provides high-quality, single-chip, nonvolatile record/playback. These cmos devices include an on-chip oscillator, microphone preamplifier, automatic gain control, antialiasing filter, smoothing filter and speaker amplifier. In addition it is micro-processor compatible allowing complex messaging and addressing to be achieved.
Recordings are stored in on-chip Flash memory, providing non-volatile storage when power is removed. The audio data is stored directly without digital compression, which provides better quality voice and music reproduction. These chips are designed for operation in either standalone or microcontroller (SPI) mode. This kit provides interfaces for both.
Specifications & Features:
- Operating Voltage 8 to 24VDC
- Sampling Frequency 8 kHz default
- Message Length 40 seconds @ 8 kHz
- Standalone Mode Yes
- SPI Mode interface Yes
- Input Source Onboard electret microphone
- Analog Line In
- Outputs Direct drive to 8 ohm speaker
- Analog Aux Output
- Visual Indicator Onboard LED
- Stays ON during recording
- BLINKS during playback, etc.
- Electronic Kit – soldering required.