This analog process could only capture a limited range of audio frequencies for voices.

这种模拟能捕获有限范围的语音音频。

So essentially how AI voice generation works is that if you have enough audio of someone talking, it will learn like the actual voice frequencies, the actual like audio frequencies of someone's voice and the way they talk.

AI语音生成的基本原理是，如果拥有足够多某人讲话的音频，系统就会学习到该人实际的语音频、音频频他们的说话方式。

Certain audio frequencies like delta waves can help guide your brain into deeper stages of sleep where memory consolidation is its strongest.

某些音频频，如δ波，能够引导大脑进入更深层的睡眠阶段，此时记忆巩固效果最佳。