電子音樂（EDM）是世界中流行的音樂類型之一。唱片騎士（DJ）是EDM的主要表演者，通常以將歌曲混合成一個無縫的混音而聞名，確保EDM歌曲在沒有任何中斷或沈默的情況下混合在一起，並通過節奏、節拍和下行節拍進行結構上的協調。此外，DJ控制EDM歌曲的頻率以防止不同樂器之間的沖突。調整節奏、節拍、下拍點和保持EDM歌曲的頻率的做法被稱為對拍和等化器混音。對拍和等化器混音對於保持聽覺體驗至關重要。從長遠來看，雇用一個DJ可能相當昂貴。作為人類，DJ長時間連續工作的能力也是有限的。此外，手動對拍和調整等化器對於普通音樂消費者而言是有難度的，因為他們缺乏關於DJ相關技術和知識。音頻處理和音樂訊息檢索技術的進步使自動對拍和等化器混音系統得以發展。我們設計了一個開源的自動對拍和等化器混音系統，通過整合現有的最佳節拍跟蹤、節奏運算和下拍點跟蹤方法來改善歌曲轉換中的聽覺體驗。根據台灣15位專業DJ對400首EDM歌曲的評估，與沒有使用我們提出的系統的歌曲混合相比，我們提出的系統改善了歌曲混合的聽覺體驗。

Electronic dance music (EDM) is one of the most popular music genres in the world of music. Disk jockey (DJ), the primary performer of EDM, is often known for mixing songs into a seamless mix that ensures EDM songs are blended without any breaks or silences and structurally coherent by tempo, beat, and downbeat. Additionally, DJ controls the frequencies of EDM songs to prevent clashing between different instruments. The practice of aligning tempo, beat, downbeat, and maintaining frequencies of EDM songs is called beatmatching and equalizer mixing. Beatmatching and equalizer mixing is essential to keep the listening experience uninterrupted. In the long run, hiring a DJ may be quite expensive. DJs as human beings are also limited in their ability to work continuously for long periods. Also, manually beatmatching and changing equalizer values will challenge general music consumers due to their lack of knowledge about DJing techniques. Advancements in audio manipulations and retrieval of music information techniques have enabled the development of automatic beatmatching and equalizer mixing system. We design an open-source automatic beatmatching and equalizer mixing by integrating the best available beat tracking, tempo estimation, and downbeat tracking method to improve the listening experience in song transition. Based on an evaluation from 15 professional DJ in Taiwan with 400 EDM songs, the proposed system improve the listening experience on song mixes compared to song mixes without using our proposed system.

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