Turning the knob of a radio one can fade the volume of sound in or out.

旋转收音机的旋钮，你就能使音量渐渐增大或减弱。

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It also differs from conventional hearing AIDS, which employ air conduction to simply turn up the volume of sound travelling into the ear.

同时也不同于常规的助听器，其是将空气传导的声音简单放大了再传入耳内。

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The beneficial effect of the present invention is to increase in the volume of sound box by enlarging the zither sound box, regulate rhyme to make the music from the zither soft and sound strong.

本发明的有益效果，把古筝音箱放大，增大音箱能增强音量，能调节音韵，能使古筝音律轻柔键挺，宏亮和醇。

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Its circular top handles the majority of volume and surround sound settings, while the rest of the remote's top-facing section is split into eight preset selectors for the incoming game audio in either speaker or headphone mode.

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The embedded speaker system in the Vybe provides crystal clear sound and a control panel to allow for adjustments in the sound volume and intensity of the tactile sensations.

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At one point the sound and the volume of the rain was so intense that everyone stopped their conversations and stared at pools of water that were rapidly building up near the edges.

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