MATLAB Implementation of Voice Activity Detection (VAD) Code

In voice-controlled application scenarios, the VAD detection source code plays a critical role. This implementation utilizes frame-based energy calculation and threshold comparison to determine speech presence, serving as reliable start/stop detection for voice-activated systems. The code has been thoroughly validated and employs a sliding window approach for real-time audio processing. When implementing, users need to modify the energy threshold parameters according to specific environmental conditions and application requirements. The algorithm processes audio signals by dividing them into frames, calculating short-term energy for each frame, and comparing against adaptive thresholds. It is recommended to conduct comprehensive testing and parameter adjustment based on your specific use case before deployment to achieve optimal performance. Key functions include frame segmentation, energy computation, and threshold-based decision logic that can be customized for different noise environments.