提出了一种采用数字电路技术，替代原来的模拟元器件控制音响的声道选择和音量调节的音响控制器。

In this article an audio controller, which USES digital circuit technology instead of original analogue components to control channel selection and volume adjustment, is proposed.

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弦乐演奏者往往通过练习这些独奏的曲目来学习和进步，因此不仅技术上，在演奏法、音响控制、力度控制等方面，都是以独奏作品中的要求为准则的。

String players often are trained on solo repertoire, learning not only technique, but also interpretation, sound projection, and a sense of dynamism appropriate for solo work.

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当那熟悉的声音响起时，托德旧日的激情又攫住了他，控制住了他的全身心。

As the familiar sound broke forth, the old passion seized on Toad and completely mastered him, body and soul.

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