The time interval between pulses is the key parameter of sound synthesis generated by repetitive nanosecond pulse discharge. In this paper, the experimental studies on repetitive nanosecond pulse discharges at different intervals using a pin–pin electrode were carried out and the time-domain sound waveforms were obtained using a capacitor microphone. The experiment results show that a single pulse discharge with a FWHM (full width at half maxima) of 6 ns can produce a pulse sound with a much wider FWHM of 16 μs because of thermal inertia. Based on this measured waveform of the sound pressure and the burst modulation method, the time interval between the repetitive pulses for a better synthesis of 100 Hz sound was theoretically determined to be shorter than 15 μs. However, it was experimentally found that this theoretically determined time interval is too short for the gas to recover its insulating ability from the previous pulse discharge. The energy deposited into the discharge and the sound pressure generated by the following pulses are greatly reduced. The experimental synthetic sound is considerably lower than the theoretical one.

中文翻译：

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脉冲之间的时间间隔对重复纳秒脉冲放电产生的合成声音的影响

脉冲之间的时间间隔是重复纳秒脉冲放电产生的声音合成的关键参数。在本文中，使用针脚电极对不同间隔的重复纳秒脉冲放电进行了实验研究，并使用电容麦克风获得了时域声音波形。实验结果表明，由于热惯性，FWHM（半峰全宽）为6 ns的单脉冲放电可以产生具有16 μ s更宽的FWHM的脉冲声音 。基于此测量的声压波形和突发调制方法，理论上确定重复脉冲之间的时间间隔可以更好地合成 100 Hz 声音小于 15  μs。然而，实验发现，这个理论上确定的时间间隔太短，气体无法从先前的脉冲放电中恢复其绝缘能力。沉积在放电中的能量和随后脉冲产生的声压大大降低。实验合成声音比理论声音低得多。