[[alternative]]New Bass Drum Pedal: Design, Manufacture and Evaluation

[[abstract]] 爵士鼓的大鼓音色強調點狀式的打點，以配合低音部樂器的節奏與重音的展現，所以傳統爵士鼓鼓踏的設計上主要考量打擊機動性與便攜性，而賴紀衡(2015)以釘書機原理所設計出的3D模型踏板圖，其點狀式打擊力道比傳統踏板更優越、更省力，但是這些都忽視大鼓自然振動所發出來那最純粹的音色與延音制止的這兩項技術性。因此，筆者提出以直立式鋼琴的擊弦機原理，將擊弦系統的結構與止音裝置置入爵士鼓大鼓踏板的設計之中，使鼓踏能夠主動控制延音的長度，並保有最自然渾圓的音色品質;此外，增設的兩個彈簧夾式安裝機制，更能迅速地將鼓踏安裝於大鼓上且穩固不易左右搖晃。本研究以電腦3D繪圖軟體Rhino進行設計與模型建立，模型建立完成後再使用電腦平面設計程式Adobe Illustrator製作平面切割圖檔用以雷射切割密集木板材，創造出止音式打槌系統鼓踏。 此外，本研究也針對試用止音式打槌系統鼓踏，進行問卷調查和建議反饋，發放50份調查問卷、實際收回43份、問卷回收率86%;訪問對象涵蓋連鎖樂器行經銷商、音樂教室管理部門、教師群與職業樂手、力學專家以及學習爵士鼓與打擊樂的學生們。評估結果顯示整體認同度達到72%，其中九成以上的人認同該設計腳感更輕盈、止音效果實用、穩固不易左右搖晃;而約八成以上的人也對該設計的整體喜好度、DIY組裝式設計給予良好的評價;另外，針對該款在音色輕快悅耳、設計感時尚美觀、整體輕巧好攜帶的認同度也有七成以上的人表示認同。機動性高的認同度約有五成六，唯獨堅固耐用認同度只有約兩成。而在質性分析中發現男性較適用於DIY組裝式設計且新手能較快適應此鼓踏的使用方式，調查中也發現受訪者較重視鼓踏的音色品質與腳感輕重度，而這兩項在止音式打槌系統鼓踏上都有所展現。本論文主要是改良鼓踏設計，在成本考量下其模型的建立以容易塑型的密集板材執行製作，主要用來觀測此止音式打槌系統鼓踏設計的結構與機件的作動原理。[[abstract]] The bass drum's tone emphasizes short and rapid effects, which are used to match the rhythm and accent of the bass instrument. Therefore, the design of traditional jazz drum pedals mainly considers its mobility and portability . Based on stapling mechanism, Lai Jiheng's (2015) bass drum pedal 3D model with less effort , which is superior than the traditional jazz drum pedal in terms of its point-like strike force. Neverthless, they all neglect two techniques, resonant frequency of bass drum and the pedal of controlling the sustain. Therefore, my aims is to design the bass drum pedal with a sustain controller by using the upright piano action machamism , so that the drum pedal can actively control the length of the sustain, and maintain the most natural sound quality.In addition, the installation mechanism of two spring clips is added, which makes the drum pedal more effectively installed and steady. This research uses Rhino 3D for design and model construction on medium-density fibreboard, and creates a product named as “silent drum pedal with a hammering mechanism.” In addition, this research conducted questionnaires on “silent drum pedal with a hammering mechanism” with a 86 response rate; Out of 50 invitations, I received 43 responses. The interviewees include musical instrument retailers ,management team of music learning centers , teachers, professional musicians, mechanics experts, and jazz drums set and percussion students. The survey results showed that the overall preference reached 72%. More than 90% of the people thought that the design was lighter, more practical, steady and not easy to shake left and right; and more than 80% of the people also gave positive feedacks on the overall design and DIY assembly; in addition, more than 70% of people agreed with this model for its bright and pleasant tone, stylish outlook, and its lightweight for easily carried; about 56% of people belivied that its high mobility; and only one survery showed not favored that is durability, which is about 20%. In qualitative analysis, it is found that men prefer to DIY assembly design, and novices can adapt to the use of this drum pedal faster. The survey also found that the sound quality of the drum pedal and the light on their feet are reviewed positive. My thesis aims to design a new drum pedal, built with medium-density fibreboard moulding easily and lower price. It is mainly used to observe the structure of the design and the operating principle of the “silent drums pedal with a hamming mechanism.