基于Windows平台的音效增强系统设计与实现

Design and implementation of an audio enhancement system based on Windows platform

针对消费电子类产品中扬声器体积小型化所导致的低频重放能力有限、动态范围较小、频响曲线不佳、声场过窄等问题,开发了i Surround音效增强算法,包括扬声器均衡、图示均衡器、立体声增强、虚拟低音、动态范围压缩和自动音量控制等。在Windows平台上以虚拟声卡的形式实现该算法,最后运用主观听音实验的方法,证明了i Surround音效增强算法在低音表现力、声场宽度、空间环绕感等方面有明显提高。同时,也与目前主流音效算法就行了比较。

For consumer electronics products, the limited size of loudspeakers leads to lots of problems, such as limited bass reproduction capability, small dynamic range, poor frequency response, narrow sound width, etc. To address these problems, an iSurround audio enhancement algorithm is developed, including loudspeaker equalization, graphic equalizer, stereo enhancement, virtual bass, dynamic range compression, automatic gain control and so on.And this algorithm is imple- mented on the Windows platform.Finally, subjective listening experiments are carried out to prove that iSurround audio en- hancement algorithm has a significant improvement in bass reproduction capability, sound width and spaciousness.The com- parison with mainstream algorithms is made at last.