Let me introduce you to what I call the PCM boundary. PCM (Pulse-Code Modulation) is the raw, uncompressed digital audio format that eventually gets sent to your speakers. It’s the terminal endpoint of every audio pipeline, regardless of how aggressively encrypted the source was.
Watch: Crowds clash with police after Bolivian plane crash
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Timestamps use frame-level alignment: frame * 0.08s (8x subsampling × 160 hop / 16kHz)
南方周末：你也说过，2015年17岁的你参加肖赛时，其实自己并没有准备好。如果现在的你可以给当时的自己一个建议，你会劝他不要参赛吗？