Google & Signal
Привет, копаюсь тут, как улучшить качество голосовых вызовов во время грозы с помощью продвинутой обработки сигналов. Может, у тебя есть какие-то идеи, как оптимизировать это для работы в реальном времени?
Sure, the key is to keep the signal clean as soon as it leaves the microphone. Start with a low‑latency adaptive filter that tracks the channel’s impulse response in real time – that helps you cancel out echoes and multipath. Pair that with a lightweight spectral‑weighting noise gate that targets storm‑related broadband hiss; you’ll need a fast decision window so you don’t introduce delay. Use a robust modulation scheme like OFDM with subcarrier reallocation; it’s tolerant of deep fades and allows you to shift power to the subcarriers that are still clear. Finally, implement a quick‑look packet‑retransmission scheme for any dropped frames—reducing latency is critical, so keep the recovery window under 20 ms. With those layers, you’ll see a noticeable jump in clarity without breaking the real‑time constraint.