BPM转毫秒延迟计算器

计算原理

One equation drives the whole page: 60000 divided by BPM gives the milliseconds in a beat, so 120 BPM is exactly 500 ms. The table scales that beat by note value — a whole note is 4×, a half 2×, an eighth 0.5×, down to 0.0625× for a sixty-fourth — and adds two more columns, dotted at 1.5× and triplet at two-thirds. A Hz column inverts each figure as 1000 divided by the millisecond value, which is what an LFO rate control wants.

BPM is the only real input, accepting 20 to 400 in steps of 0.1, with preset buttons at 60, 75, 90, 100, 110, 120, 128, 140, 174 and 180 that cover most house, hip-hop and drum and bass sessions. Enter the tempo your project is actually running at, including any decimal, because a 0.5 BPM error compounds across a long delay tail. Leave the reference selector on Quarter note = 1 beat, which is the standard reading.

The reference selector multiplies every value in the table without changing any of the note labels, so choosing Half note = 1 beat at 120 BPM leaves the row still headed quarter note showing 1000 ms. The numbers themselves are mathematically exact, but they assume a rigid grid: swing, shuffle and humanised timing all shift the real note positions, and a delay set to host sync may round differently from these figures.

常见问题