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当我指定44.1kHz时,为什么我USB-9233的采样率会强制到50kHz?

硬件: CompactRIO>>Analog Input Modules>>NI 9233, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>USB-9233, CompactRIO>>Analog Input Modules>>NI 9233, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>USB-9233

问题:
我需要对音频应用进行数据采集。当我对我的NI-9233设置采样率为44.1kHz时,真实采样率会被强制到50kHz。NI-9233有效采样率是多少?

解答:
NI-9233有效采样率遵循如下公式:
Fs = 100kS/s / N,其中 N 是整数2、3。
Fs = 50kS/s / N,其中N是整数2..25。

如果指定的采样率不能满足上述允许值,那么就强制到向上的下一个有效采样率。决定您设备实际采样率的更多信息,请访问下面列出的知识库文章。

相关链接:
KnowledgeBase 39BCDJMV: Determining the Actual Sample Rate of an Acquisition in NI-DAQmx
KnowledgeBase 27R8Q3YF: How Is the Actual Scan Rate Determined When I Specify the Scan Rate for My Data Acquisition?
Product Page: NI USB-9233

附件:





报告日期: 05/18/2006
最近更新: 05/29/2006
文档编号: 3SKAB1LA

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