The latency needs to be so small that it gives to the musician the impression of playing a real acoustic instrument.

延迟必须很小，这样可以给音乐家一个正在弹奏一件真正的声学乐器的感觉。

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"Soundwel acoustics. Focused on acoustic" we have a professional acoustic instrument acoustic technical team, experienced engineers.

声华声学，我们专注声学。我们有着专业的声学技术团队、经验丰富的工程施工人员和专业的声学仪器。

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Gray's early music was in a contemporary folk-rock, singer-songwriter mode; his primary instrument was acoustic guitar, with occasional piano.

Gray早期的音乐类型属于当代摇滚民谣并且是一个唱作人。他早期使用的乐器是原声吉他，偶尔使用钢琴。

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On an acoustic guitar, the strings vibrate and the hollow part of the instrument, or the sound box,also vibrates.

VOA: special.2009.09.27

He wanted to make an instrument that could play a note longer than notes played on a traditional acoustic guitar.

VOA: special.2009.09.27

The best models simulate the sound and feel of an acoustic instrument, yet take up less space.

WSJ: Digital Pianos: Great Performers for Tight Spaces

On the acoustic side, Clapton is selling the 1939 Martin that was his main instrument for his MTV Unplugged appearance, and his main stage acoustic guitar from 1993 to 1995.

FORBES: Rock On The Block

Another notable acoustic guitar is the Spanish-made instrument on which Clapton composed the compelling, beautiful "Tears in Heaven, " which he wrote after his 4-year-old son Conor's tragic death.

FORBES: Rock On The Block