By sound analysis I mean going deep into Digital sound Processing.

我的意思是通过声音分析深入到数字声音处理。

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Voice analysis is an important subject of the digital sound processing.

语音信号分析在数字语音处理中起着十分重要的作用。

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The audio board converts analog sound to digital sound and stores it fur further processing.

声板把模拟声音转换为数码声音，并将其储存起来以被处理。

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Sony and Philips, another electronics manufacturer, worked together to create a new storage device for digital sound -- the compact disc.

VOA: special.2011.05.11

The dock features reinforced bass through a passive radiator and high power amplification for powerful full digital sound.

ENGADGET: iLuv unveils the Aud 5: a Lightning speaker dock with Bluetooth connectivity for non-Apple wares

Neil Young is working on analog digital sound-- sound that was intended to be heard as he made it.

FORBES: Magazine Article

The YSP-900 Digital Sound Projector joins Yamaha's high-end YSP-1100 in their digital sound projector line-up of simulated surround-sound speaker-bars.

ENGADGET: Yamaha's YSP-900 Digital Sound Projector: a 5.1 sound bouncer that works