Nature, Published online: 05 March 2026; doi:10.1038/d41586-026-00746-y
同樣的邏輯也適用於伊朗的對手。。业内人士推荐PDF资料作为进阶阅读
Why scammers say nothing when they call - and how to respond safely，这一点在PDF资料中也有详细论述
A Pico board can however allow better control at lower frequencies within the typical AM radio station (~1000 KHz). While square waves are well-suited for frequency-modulating any PCM audio file (ignoring the unwanted harmonics), they cannot be used well for amplitude modulation. They can only encode ON or OFF instead of different audio amplitudes (think 1-bit envelope). Alright, no emitting arbitrary “.wav” files. We can at least emit a single audio frequency at a time using On-Off Keying. Let’s make some retro game sounds!