Depending on the problem, both strategies may be sound and feasible, though budgetary constraints normally play a factor in the decision.

虽然预算限制常常是决定中的一个因素，但是根据具体问题，两种策略可能都是正确的和可行的。

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But a new study finds another factor that determines if we can hear a sound: Whether that sound is appearing or vanishing.

但一项新的研究发现了另一个决定我们能否听到声音的因素：声音的出现或者消失。

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You can play with the effect by changing the delay time, decay factor, and clicking Preview until you have the exact sound effect you want.

您可以通过更改延迟时间、衰减系数和单击p review播放效果，直到您获得想要的音效为止。

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"I started off with a need for phenomenal sound in a small form factor, " says The Original innovator Raul Chinda.

ENGADGET: Croon Audio's Original Bluetooth speakers promise not to creak while they're cranked

Even in darkness, its high-power thermal scope reads body heat to locate potential targets, providing a low-risk defense against snipers. ( 160K AIFF sound or 160K WAV sound) More important is the deterrent factor.

CNN: Preparing for peace

Edifier's Bric Connect is ideal for home, office or use on-the-go by providing Bluetooth capabilities as well as stunning sound reproduction that is commonly found in systems with a larger form factor.

ENGADGET: Edifier's iF335 Bluetooth speaker pumps up the volume for $99