Description
The MT8870 DTMF Speech Decoding Module is a versatile and efficient solution for decoding DTMF (Dual-Tone Multi-Frequency) signals generated by a telephone keypad. This module is widely used in telecommunication, remote control, and interactive voice response systems, offering reliable performance in decoding tone signals into binary data.
Key Features
- DTMF Signal Decoding: Converts telephone keypad tones into binary data.
- High Sensitivity: Accurate decoding of weak DTMF signals.
- Compact Design: Easy to integrate into projects with limited space.
- Built-in MT8870 IC: Ensures reliable and efficient signal processing.
- Output Format: Provides a 4-bit binary output for each DTMF tone.
- LED Indicator: Visual confirmation of valid DTMF signal reception.
Specifications
- Chipset: MT8870
- Voltage Range: 3.3V – 5V DC
- Output: 4-bit binary
- Input Type: Audio signal via onboard header or connected microphone
- Dimensions: Compact module size for easy integration
Applications
- Telephone signal decoding
- Remote control systems
- Interactive voice response (IVR) systems
- Security and access control applications
- Audio-controlled devices
How It Works
- Connect the audio input to the module from a phone line, audio source, or microphone.
- The MT8870 IC decodes the DTMF tones into 4-bit binary data.
- Binary output can be processed by a microcontroller for further applications.
Package Includes
- 1 x MT8870 DTMF Speech Decoding Module
