車內音響系統之性能分析

Performance Analysis of Car Audio System

陳信瑋(Shin-Wei Chen)

指導教授 ： 劉興華

國立臺北科技大學/機電學院/車輛工程系所/碩士(2007年)

https://doi.org/10.6841/NTUT.2007.00457

摘要

喇叭的性能量測依據規範是在無迴響室中進行，而喇叭使用於車輛上時由於受到車廂內封閉空間所衍生的反射、繞射及位置等因素影響，因此會與以依規範測試之性能有所差異。有鑒於此，本文將以實驗的方式來探討於實驗車廂對喇叭性能之影響，實驗共分為模擬人耳聽覺實驗、車內不同位置之性能探討、改變駕駛者頭轉角度性能探討、不同車窗開啟程度下性能測試、車內前座椅背傾斜45度性能測試、車內乘客人數改變性能測試等六項，希望此六項實驗探討車內各喇叭產生的實際聲場特性。為模擬人的聽覺反應，所進行的實驗係以聲學人偶分別測量左、右耳之喇叭頻率響應。期望本研究的結果可應用於車內音響的設計及分析。

關鍵字

車廂 ； 喇叭性能 ； 音響

並列摘要

According to the standards, loudspeaker performance should be measured inside the anechoic room. In actually, performance would be affected by cabin reflections, diffractions or other factors when speakers were installed in a car. Therefore, this paper will explore the actual sound field characteristics of all speakers inside the car by systematic experiments.
In order to simulate the human hearing behaviors, all experiments are using Bruel& Kjaer Head& Torso Simulator to measure frequency response of speakers to assess real performance inside the car. The purpose of this study is to improve the car audio system design and analysis.

並列關鍵字

Cabin ； loudspeaker performance ； audio

參考文獻

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