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【单选题】
关于PCM,以下哪一项描述是错误的?A.
8000Hz采样频率将语音信号频率范围限制在0~4000Hz
B.
8位二进制数表示幅值将误差控制在1/2之内
C.
A/D转换过程涉及采样、量化等步骤
D.
64kb/s 传输速率由8000Hz采样频率和8位二进制数表示幅值导出
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Nor did I.
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C.
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D.
Yes, we certainly did.
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A.
planned
B.
planning
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to plan
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to be planned
【简答题】盘点你已经了解的心理学知识并作评价。
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