一种分析音频设备中采样抖动的方法
A method for analyzing sampling jitter in audio equipment
AI总结：
提出一种基于时域过零点波动分析音频设备采样抖动的方法，可分离播放器与录音设备抖动，并利用左右声道区分抖动与噪声，适用于音频设备、信号发生器及时钟源性能评估。
摘要：
本文提出了一种分析音频设备中采样抖动的方法。该方法基于时域分析，利用记录的正弦波中过零点的时域波动来表征抖动。当同一播放信号同时馈入两台录音设备时，该方法能够分别评估音频播放器与录音设备中的抖动。实验采用市售便携式设备进行，其最大采样率为每秒192000个样本。结果表明，音频播放器中可识别出几十皮秒量级的抖动值。此外，所提方法利用音频设备的左、右声道，能够将抖动与相位无关的噪声分离开来。因此，该方法适用于音频设备、信号发生器和时钟源的性能评估。
英文摘要：
A method for analyzing sampling jitter in audio equipment is proposed. The method is based on the time-domain analysis where the time fluctuations of zero-crossing points in recorded sinusoidal waves are employed to characterize jitter. This method enables the separate evaluation of jitter in an audio player from those in audio recorders when the same playback signal is simultaneously fed into two audio recorders. Experiments are conducted using commercially available portable devices with a maximum sampling rate of 192~000 samples per second. The results show jitter values of a few tens of picoseconds can be identified in an audio player. Moreover, the proposed method enables the separation of jitter from phase-independent noise utilizing the left and right channels of the audio equipment. As such, this method is applicable for performance evaluation of audio equipment, signal generators, and clock sources.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
