雙通道音頻縮放系統的智慧手機（ Sound）

• 2020 年 1 月 20 日
• 筆記

本文首次提出了兩種基於麥克風的音頻變焦系統。音頻縮放應用程式允許從前方方向捕獲和增強聲音，同時對來自所有其他方向的干擾源進行放大。完整的音頻變焦系統採用了基於波束形成的目標擴展。特別地，最小功率無失真響應(MPDR)波束形成器和格里菲斯吉姆波束形成器(GJBF)被提出。然後是塊閾值的剩餘雜訊和干擾抑制，和縮放效果的創建。使用三星智慧手機(三星Galaxy A5)進行了大量模擬和真實實驗。客觀和主觀的衡量標準證實了豐富的用戶體驗。

原文題目：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 ex- traction. In particular, Minimum Power Distortionless Response (MPDR) beamformer and Griffith Jim Beamformer (GJBF) are ex- plored. 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

原文鏈接：https://arxiv.org/abs/2001.04940