Translate between durations and tempos

Functions for translating between durations (in seconds) and tempos---expressed as BPM (beats-per-minute). The "beats" in beats-per-minute are specified using the unit argument; unit defaults to .25 (a quarter-note), as is conventional.

Usage

bpm2sec(BPM, unit = 0.25)

sec2bpm(sec, unit = 0.25)

bpm2ms(BPM, unit = 0.25)

ms2bpm(ms, unit = 0.25)

Arguments

BPM

The tempo.

Defaults to 60.

Must be a number or a character string in the format "MM120" (for 120 bpm).

By default, with(in).humdrumR passes the BPM field, if present.

unit

The "Beat" in BPM.

Defaults to a quarter-note.

Must be a value which can be interpreted as rhythmic duration.

Details

The pairs of functions involving ms (milliseconds) and sec (seconds), are identical except for the change of scale between seconds and milliseconds.

See also

Other time functions: time()