Voice Record Module is base on ISD1820, which a multiple‐message record/playback device. It can offer true single‐chip voice recording, non-volatile storage, and playback capability for around 10 seconds.
Chip: ISD1820.
Operating Voltage: DC 3V-5V.
Loudspeaker: 8Ω, 0.5W.
An easy to use 10 seconds of voice recording.
High-quality, natural voice restored.
Can be used as a propaganda module.
With looping, jog playback, single-pass play function.
ISD1820 Voice Recording Module With Speaker description:
Voice Record Module is base on ISD1820, which a multiple‐message record/playback device. It can offer true single‐chip voice recording, non-volatile storage, and playback capability for around 10 seconds. This module is easy to use which you could direct control by push button on board or by Microcontroller such as Arduino, STM32, ChipKit, etc. From these, you can easily control record, playback and repeat, and so on.
This is ISD1820 Recording Module Voice Board With On Board Mic and Loud Speaker. The ISD1820 Recording Module Voice Board is the real easy way to add Voice Recording (and Playback) to your project. The Module can be operated directly by using the 3 Push-Buttons or with every microcontroller (ex. Arduino).
A microphone is implemented directly on the board, and you can connect any 8 Ohm Speaker. Your recordings are saved even without power due to the non-volatile storage on the ISD1820.
This module uses the ISD1820 voice record and playback IC to record a single voice message of up to 10 seconds in length. The recorded message is stored in its specialized analog flash memory that will keep the message stored even when power is removed.
The module includes an electret microphone to record your message and push buttons to allow for the record, partial playback, or full playback of the message. Header pins allow for easy interface to a microcontroller and playback can be controlled with just one digital pin.
The package includes an 8 Ohm 0.5W speaker and cable which can be connected directly to the modules speaker output.
SPECIFICATION
1. Push‐button interface, playback can be edge or level activated
2. Automatic power‐down mode
3. On‐chip 8Ω speaker driver
4. Signal 3.3V Power Supply
5. Can be controlled both manually or by MCU
6. Record up to around 10 seconds of audio
7. Dimensions: 37 x 54 mm
Pin Description of ISD1820 Recorder/Playback Module
Pin Name
Description
VCC
DC 2.4-5.5V
GND
Ground
FT
FeedThrough: This mode enables the Microphone to drive the speaker directly.
REC/REC (Button)
The REC input is an active‐HIGH record signal. The module starts recording whenever REC is HIGH. This pin must remain HIGH for the duration of the recording. REC takes precedence over either playback (PLAYLorPLAYE) signal.
P-E/PLAY-E (Button)
Playback, Edge‐activated: When a HIGH‐going transition is detected continues until an End‐of‐Message (EOM) marker is encountered or the end of the memory space is reached.
P-L/PLAY-L (Button)
Playback, Level‐activated, when this input pin level transits for LOW to HIGH, a playback cycle is initiated.
SPI
The SP+ and SP‐ pins provide a direct drive for loudspeakers with impedances as low as8Ω.
Note: This is not Serial Parallel Interface Pins.
MIC
Microphone In: the microphone input transfers its signals to the on‐chip pre-amplifier.
What is ISD1820?
ISD1820 is a small Voice Recorder and Playback module that can do the multi-segment recording. The user can achieve a high quality of recording (for 8 to 20secs) for each application with the adjustment of the on-board resistor.
