CAJ | 학술논문

针对音乐的音阶频率按指数规律分布的特点，提出基于常量 Q 变换(CQT)的音符起始点检测算法。该算法根据十二平均律的音阶频率分布规律，对音乐雷号进霂分解，得到一个分音矩阵，利用该分音矩阵生成检测函数，并提取峰值，得到音符起始点除量。实验结果显示，该算法的检测结果要优于2011年MIREX的结果。
침대음악적음계빈솔안지수규률분포적특점，제출기우상량 Q 변환(CQT)적음부기시점검측산법。해산법근거십이평균률적음계빈솔분포규률，대음악뢰호진목분해，득도일개분음구진，이용해분음구진생성검측함수，병제취봉치，득도음부기시점제량。실험결과현시，해산법적검측결과요우우2011년MIREX적결과。
The frequencies of music scales are exponentially distributed. This paper proposes an algorithm for note onset detection, which is based on Constant Q Transform(CQT) and adapts to the characteristics of music scales. The music signals are decomposed to a partial matrix through CQT, according to the frequencies distribution of twelve-tone equal temperament. Detection function is generated using the partial matrix. Peaks are picked, and note onset vector is obtained. Experimental results show that the results are superior to those of 2011 MIREX.