Explore MATLAB source code curated for "DTMF" with clean implementations, documentation, and examples.
• Design a MATLAB-based GUI for DTMF telephone keypad implementation featuring signal generation and tone detection capabilities • Simulate DTMF signals with realistic noise models according to technical specifications • Implement signal decoding and display functions using spectral analysis algorithms
MATLAB program simulating DTMF signal generation and detection using Goertzel algorithm (combined with FFT algorithm approach). This implementation focuses on dual-tone multi-frequency signal processing with enhanced parameter tuning capabilities for detailed waveform analysis.
DTMF (Dual-Tone Multi-Frequency) is an encoding technique that uses specific pairs of audio frequency tones to represent digit signals, where different frequency combinations correspond to different numbers or functions. This system utilizes 8 distinct frequencies to encode 16 telephone keypad buttons (digits 0-9 and symbols *, #, A, B, C, D). Key implementation requirements include: (1) Generating corresponding DTMF signals in MATLAB based on keyboard input symbols; (2) Calculating signal spectra using both FFT and Goertzel algorithms with spectral plotting; (3) Verifying symbol consistency between input and decoded signals through spectral analysis.
MATLAB code implementation for DTMF (Dual-Tone Multi-Frequency) signal processing with comprehensive signal generation and detection algorithms