| 摘要 |
A portable computer and system controlling method thereof. The portable computer includes a heat dissipating module, a microphone, a spectrum analysis module, and a controlling module. The heat dissipating module has a fan module. The fan module has a corresponding system acoustic level. The microphone collects surrounding noises, acoustically isolated from the fan module. The spectrum analysis module is connected to the microphone, analyzing the surrounding noises collected from the microphone to obtain a surrounding acoustic level. The controlling module has a predetermined temperature of the element, connected to the heat dissipating module and the spectrum analysis module, respectively. The predetermined temperature of the element substitutes for the maximum temperature, and the surrounding acoustic level substitutes for the maximum system acoustic level. An executive operating status is selected from a plurality of operating statuses, thereby obtaining corresponding system efficiency and fan driving voltage.
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