背景噪音聲場模擬技術之研究

Experimental Study of Background Noise Simulation Technique

劉興華 ； 吳啟偉

《中華民國振動與噪音工程學會論文集》 2010 (2010/06) Pp. 91-95

https://doi.org/10.30028/CSSVANNUAL.201006.0091

摘要

隨著通訊產品的普及，對語音通話品質的要求日益提升，因此通訊產品研發時必須在各種使用環境下測試產品，以滿足消費者需求。但帶著產品及儀器到各種場所做測試，不僅費時、費力且成本也較高，若能在實驗室內模擬出各種環境的背景聲場做產品測試，則能節省開發時間與成本。半無迴響室優點較一般空間穩定且不易受到外界干擾，為了探討聲場重建技術應用在半無響室的使用限制與範圍，本研究針對聲源位置改變及聲場錄製位置改變做有系統的實驗測試，觀察原始聲場與重建聲場之差異。目的是為了探討在半無迴響室的環境中模擬重建背景噪音聲場，供做通訊產品測試環境的準確性。

關鍵字

背景噪音 ； 聲場模擬 ； 通訊產品

並列摘要

The demand for the speech quality of communication products is an important issue for product development. The communication products must be tested in different application environments, but it costs lots of time and manpower to test on-site. It will be cost down to test communication products in a simulated background noise environment that created in the laboratory. Semi-anechoic room is a standard acoustic test room and it has a good transmission loss for outside noise. The purpose of this research is to study the application of background noise reconstruction in the semi-anechoic room. Systematic experiments are designed to investigate the difference of original sound field and reconstructed sound field by changing position of sound source and position of recording. The aim is to create a background noise test environment for communication products on R&D stage.

並列關鍵字

Background noise ； Sound field reconstruction ； communication product