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APCM Adaptive Pulse Code Modulation 自适应脉码调制 APCM是在PCM基础上，采用量化自适应，使均方量化误差最小的一种调制方法。 APD Avalanche Photo Diode 雪崩光电二极

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People who want you to part with your cash and property can steal your passwords and personal details, but what about your voice? That's what some big companies asked themselves before turning their attention to voice biometrics in their war against

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