發(fā)布時(shí)間：2018-10-20 17:11

【摘要】：隨著科技的不斷進(jìn)步和人們對(duì)視聽(tīng)體驗(yàn)要求的提高,越來(lái)越多的人開(kāi)始關(guān)注聽(tīng)覺(jué)上的空間感受�？臻g聽(tīng)覺(jué)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(diǎn)研究對(duì)象。圍繞人耳的聽(tīng)覺(jué)定位性能的研究是近年來(lái)空間聽(tīng)覺(jué)研究領(lǐng)域的一個(gè)熱點(diǎn),也是空間聽(tīng)覺(jué)技術(shù)研究中最基礎(chǔ)和重要的一部分內(nèi)容,對(duì)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(tīng)覺(jué)技術(shù)的研究現(xiàn)狀和人耳聽(tīng)覺(jué)定位性能研究的重要意義,然后分析了人耳的聽(tīng)覺(jué)定位機(jī)理,進(jìn)一步分析了ITU推薦的幾種主觀評(píng)價(jià)方法以及國(guó)內(nèi)外研究學(xué)者針對(duì)聽(tīng)覺(jué)定位主觀測(cè)試所使用的感知聲源指示方法。在此基礎(chǔ)上,詳細(xì)地給出了本文空間聽(tīng)覺(jué)定位性能主觀評(píng)價(jià)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(tái)實(shí)現(xiàn)的音頻無(wú)線(xiàn)收發(fā)傳輸測(cè)試系統(tǒng),將方法具體應(yīng)用于人耳聽(tīng)覺(jué)定位性能的主觀評(píng)價(jià)實(shí)驗(yàn)中。在遠(yuǎn)聲場(chǎng)條件下(聲源距離人耳距離為1.5m),對(duì)音籠裝置上水平方向上由下向上θ=0°,10°,20°,30°,45°共5個(gè)平面,垂直方向上φ=0°,30°,60°,90°共4個(gè)平面的人耳聽(tīng)覺(jué)定位特性進(jìn)行主觀評(píng)價(jià)測(cè)試。聲源采用1kHz單一頻率聲源和白噪聲兩種類(lèi)型,利用離散的點(diǎn)聲源方式隨機(jī)進(jìn)行播放。被試指示感知聲源的方法采用手機(jī)激光棒指示的方法,并規(guī)定被試在聽(tīng)音過(guò)程中頭部不允許轉(zhuǎn)動(dòng)。共進(jìn)行了18組實(shí)驗(yàn),每組實(shí)驗(yàn)均招募10名大學(xué)生進(jìn)行測(cè)試。對(duì)所有聽(tīng)音實(shí)驗(yàn)的數(shù)據(jù)進(jìn)行統(tǒng)計(jì)和處理,得出人耳聽(tīng)覺(jué)定位性能相關(guān)定性和定量的實(shí)驗(yàn)結(jié)果,并采用圖表的形式直觀地表示。最后對(duì)本文工作進(jìn)行了總結(jié),對(duì)主觀聽(tīng)音實(shí)驗(yàn)的設(shè)計(jì)提出了改進(jìn)的建議,對(duì)進(jìn)一步多維度的研究人耳在空間中的聽(tīng)覺(jué)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(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN912.3

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本文編號(hào)：2283828