WebP compatibility
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.
，这一点在heLLoword翻译官方下载中也有详细论述
"objectiveId": "205789994357362688",
-> [ anyRcv staticPart: anyArg2 anyKeywordPart: anyArg1 ]