Voice Synthesis MATLAB Program with Pitch and Speed Manipulation

This is an original voice synthesis MATLAB program capable of modifying audio parameters such as pitch and speech rate to achieve gender voice conversion (male-to-female and female-to-male). The program employs advanced digital signal processing techniques including frequency domain manipulation through Fast Fourier Transform (FFT) and time-scale modification using phase vocoding algorithms. Key functions include: - Pitch shifting via spectral envelope adjustment and formant preservation - Time-scale modification without pitch alteration using overlap-add (OLA) methods - Real-time parameter control through interactive GUI sliders Designed with high flexibility and customizability, the program allows users to fine-tune parameters according to specific requirements. The algorithm incorporates psychoacoustic optimization to maintain audio quality and naturalness, featuring adaptive noise reduction and formant correction mechanisms. Suitable for both personal entertainment and professional applications, this voice synthesis solution delivers exceptional performance through efficient matrix operations and optimized audio buffer handling within MATLAB's signal processing toolkit.