论文标题
智能手机的两个通道音频缩放系统
Two Channel Audio Zooming System For Smartphone
论文作者
论文摘要
在本文中，首次提出了两个用于音频缩放的基于麦克风的系统。音频缩放应用程序允许从前方方向捕获和增强声音，同时衰减所有其他方向的干扰源。完整的音频缩放系统利用基于波束形成的目标提取。特别是，探索了最小功率无失真响应（MPDR）束式响应器和Griffith Jim Beamformer（GJBF）。接下来是残留噪声和干扰抑制和变焦效应的块阈值。使用三星智能手机（三星Galaxy A5）进行了许多模拟和现实生活实验。客观和主观措施证实了丰富的用户体验。
In this paper, two microphone based systems for audio zooming is proposed for the first time. The audio zooming application allows sound capture and enhancement from the front direction while attenuating interfering sources from all other directions. The complete audio zooming system utilizes beamforming based target extraction. In particular, Minimum Power Distortionless Response (MPDR) beamformer and Griffith Jim Beamformer (GJBF) are explored. This is followed by block thresholding for residual noise and interference suppression, and zooming effect creation. A number of simulation and real life experiments using Samsung smartphone (Samsung Galaxy A5) were conducted. Objective and subjective measures confirm the rich user experience.
