This method researches the echo envelope model which has been simplified in this paper under range wave and time excursion, and can compute the transmitting time more accurately.
该方法研究了幅度起伏和时间漂移条件下回波包络模型，并对模型进行了简化处理，可以更准确地计算超声波渡越时间。
High-excursion drivers that allow for greater dynamic range, improved bass, and lower distortion.
高偏移驱动器，可实现更大的动态范围、更好的低音效果和更低的失真度。
High-excursion drivers that allow for greater dynamic range, improved bass, and lower distortion.
高偏移驱动器，可实现更大的动态范围、更好的低音效果和更低的失真度。
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