双通道音频缩放系统的智能手机（CS SD）

• 2020 年 1 月 19 日
• 筆記

本文首次提出了两种基于麦克风的音频变焦系统。音频缩放应用程序允许从前方方向捕获和增强声音，同时衰减来自所有其他方向的干扰源。完整的音频缩放系统采用基于波束形成的目标提取。特别地，最小功率失真响应(MPDR)波束形成器和格里菲斯吉姆波束形成器(GJBF)进行了探讨。然后是块阈值的剩余噪声和干扰抑制，和缩放效果的创建。使用三星智能手机(三星Galaxy A5)进行了大量仿真和真实实验。客观和主观的衡量标准证实了丰富的用户体验。

原文题目：Two Channel Audio Zooming System For Smartphone

原文：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.

原文作者：Anant Khandelwal, E.B. Goud, Y. Chand, L. Kumar, S. Prasad, N. Agarwala, R. Singh

原文地址：https://arxiv.org/abs/2001.04940