Wasla is a project to modulate and perform synchronous demodulation for speech signals
MIT License
Wasla is a project to modulate three speech signals using the following scheme:
() = 1() cos 1 + 2() cos 2 + 3() sin 2
, and then perform synchronous demodulation
The demodulated signals in (2) was as the original signal because of no shifting in phase (phi = 0)
In (3), shifting by 10, 30 degrees attenuates the demodulated signals (speech signals) making them lower than the original ones.
Shifting by 90 degree strongly attenuates the speech signals and it seems like no output speech.