本研究以車內提示音為例，針對方向燈、車門未關警示、喇叭、倒車雷達、R檔音總共5種功能35個聲音樣本進行實驗，探討使用者對聲音信號的主觀評價，並透過訪談，提供在設計聲音信號時，那些特性會影響使用者評估聲音的喜好度與適合度，以期望能夠提供滿足大眾所偏好的聲音。
聲音收集以實地錄音的方式進行錄製，並在聲音的後製處理上，篩選掉同質性高的聲音，一方面將聲音樣本的差異性增加，另一方面也減少實驗的長度避免受測者產生不耐。在形容詞篩選的部分，以聲音的五個不同的特性：音調、音量、質感、音色、節奏，經由相關文獻的收集與整理，發展出符合這五個特性的總共九組的形容詞進行語意差異法的評價，在問卷的設計上，除了九組形容詞的評估，同時也會詢問受測者對聲音與功能搭配的適合度以及喜好程度。
實驗包含兩個部分，成對比較法(paired comparison method)以及語意差異法(semantic differential method)，探討聲音在各項功能主觀評價，包含受測者對聲音的偏好程度以及在各組語意形容詞中對聲音感受程度的評估。
此研究成果提供了一個聲音主觀評量的方法，提供設計者在設計聲音時，要如何評估並增進聲音信號對於使用者好感度的參考依據。

The research conducted subjective evaluation toward sound signals by taking interior car sounds including 5 functions and total 35 sound samples (indicator, door warning, horn, parking sensor, and automatic shift car gear). And through interview, researchers can infer the characteristics that affect the user preference and suitability.
When collecting the sound samples, research recorded those in reality and filtered sounds with high consistency. It can enhance the discrepancies of the sample, and decrease the required length of the whole experiment process. On the adjective phase, by literature review and the five features of the sounds including tone, loudness, quality, timbre, and tempo, research collect and integrate 9 pair of adjectives to conduct semantic differential method and construct the questionnaire. Besides the adjectives questionnaire, it also incorporates questions concerning the user preference and suitability between sounds and functions.
In the research, it has two experiments: (1) paired comparison method and (2) semantic differential method. It intends to find out the subjective evaluation, which includes the participants preference and the perception of the sounds based on the selected adjectives.
The result contributes a method of subjective evaluations toward sounds, enable sound signals designers to take accordance of user preference, evaluate and enhance the signals.

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