如何找到如果单板计算机失去音频样本在通过USB同步数据传输

2018 IEEE XXV International Conference on Electronics, Electrical Engineering and Computing (INTERCON) Pub Date : 2018-08-01 DOI:10.1109/INTERCON.2018.8526405

J. Osowsky

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引用次数: 0

摘要

这项工作处理的问题，在数据采集过程中使用音频捕获设备连接到低成本和消耗的单板计算机通过USB接口的样本损失。在这种硬件中可能出现的一个问题是，它是否可以从设备获取数据，避免缓冲区溢出。提出了一种基于线性调频信号采集及其离散傅里叶变换分析的丢失样本找回方法。算例验证了该方法的有效性。

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How to Find if a Single-Board Computer Loses Audio Samples in an Isochronous Data Transfer via USB

This work deals with the issue of loss of samples in a data acquisition process using an audio capturer device connected to a low cost and consumption single-board computer via USB interface. A question that may arise in this kind of hardware is if it can acquire data from the device avoiding an overrunning buffer. A method for finding lost samples is presented that is based on the acquisition of a linear frequency modulation signal and the analisys of its discrete Fourier Transform. An example illustrates the effectiveness of the proposed method.

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2018 IEEE XXV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)

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