發(fā)布時間：2018-10-20 17:11

【摘要】：隨著科技的不斷進步和人們對視聽體驗要求的提高,越來越多的人開始關(guān)注聽覺上的空間感受�？臻g聽覺作為空間音頻技術(shù)的重要內(nèi)容,已經(jīng)成為多媒體技術(shù)領(lǐng)域的重點研究對象。圍繞人耳的聽覺定位性能的研究是近年來空間聽覺研究領(lǐng)域的一個熱點,也是空間聽覺技術(shù)研究中最基礎(chǔ)和重要的一部分內(nèi)容,對空間音頻領(lǐng)域的發(fā)展具有重要意義。本文首先介紹了空間聽覺技術(shù)的研究現(xiàn)狀和人耳聽覺定位性能研究的重要意義,然后分析了人耳的聽覺定位機理,進一步分析了ITU推薦的幾種主觀評價方法以及國內(nèi)外研究學者針對聽覺定位主觀測試所使用的感知聲源指示方法。在此基礎(chǔ)上,詳細地給出了本文空間聽覺定位性能主觀評價研究使用的方法,并結(jié)合課題所用特定的音籠裝置,利用基于Arduino平臺實現(xiàn)的音頻無線收發(fā)傳輸測試系統(tǒng),將方法具體應(yīng)用于人耳聽覺定位性能的主觀評價實驗中。在遠聲場條件下(聲源距離人耳距離為1.5m),對音籠裝置上水平方向上由下向上θ=0°,10°,20°,30°,45°共5個平面,垂直方向上φ=0°,30°,60°,90°共4個平面的人耳聽覺定位特性進行主觀評價測試。聲源采用1kHz單一頻率聲源和白噪聲兩種類型,利用離散的點聲源方式隨機進行播放。被試指示感知聲源的方法采用手機激光棒指示的方法,并規(guī)定被試在聽音過程中頭部不允許轉(zhuǎn)動。共進行了18組實驗,每組實驗均招募10名大學生進行測試。對所有聽音實驗的數(shù)據(jù)進行統(tǒng)計和處理,得出人耳聽覺定位性能相關(guān)定性和定量的實驗結(jié)果,并采用圖表的形式直觀地表示。最后對本文工作進行了總結(jié),對主觀聽音實驗的設(shè)計提出了改進的建議,對進一步多維度的研究人耳在空間中的聽覺定位性能工作給出了下一步展望及研究方向。
[Abstract]:With the development of science and technology and the improvement of audiovisual experience, more and more people begin to pay attention to the spatial feeling of hearing. As an important part of space audio technology, spatial hearing has become an important research object in the field of multimedia technology. The research on auditory localization of human ear is a hot topic in the field of spatial hearing research in recent years. It is also the most basic and important part of the research of spatial auditory technology. It is of great significance to the development of spatial audio field. This paper first introduces the research status of spatial auditory technology and the important significance of human auditory localization performance, and then analyzes the auditory localization mechanism of human ear. Several subjective evaluation methods recommended by ITU and the perceptual sound source indication methods used by researchers at home and abroad for subjective testing of auditory localization are further analyzed. On this basis, the method of subjective evaluation of spatial auditory localization performance is presented in detail, and the audio wireless transceiver transmission test system based on Arduino platform is used to test the audio wireless transceiver transmission system based on the special audio cage device used in the subject. The method was applied to the subjective evaluation experiment of auditory localization performance. Under the condition of far sound field (the distance between the sound source and the ear is 1.5 m), the auditory localization characteristics of the human ear in the horizontal direction of the cage device from the bottom up 胃 = 0 擄, 10 擄, 20 擄, 30 擄, 45 擄in 5 planes, and in the vertical direction 蠁 = 0 擄, 30 擄, 60 擄, 90 擄, are evaluated subjectively. The 1kHz single frequency sound source and white noise are used in the sound source, and the discrete point sound source is used to play the sound at random. The method of indicating the sound source is the method of indicating the cell phone laser rod, and it is stipulated that the head is not allowed to rotate during the listening process. A total of 18 groups of experiments were conducted, each group recruited 10 college students for the test. Based on the statistics and processing of all the experimental data, the qualitative and quantitative experimental results of auditory localization performance were obtained, and the results were expressed intuitively in the form of charts. Finally, the work of this paper is summarized, the design of subjective hearing experiment is improved, and the future research direction of the further multi-dimensional research on auditory localization performance of human ear in space is given.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN912.3

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本文編號：2283828