alda.test-helpers — alda/core 0.6.4

calculate-pitch clj

(calculate-pitch letter
                 accidentals
                 octave
                 key-sig
                 &
                 [{:keys [ref-pitch transpose]
                   :or {ref-pitch 440 transpose 0}}])

dur->ms clj

(dur->ms {:keys [beats ms]} tempo & [time-scaling])

Given a duration map, a tempo, and (optionally) a time-scaling value, returns the calculated duration in milliseconds.

The duration map can be created via the duration function, which takes any number of note-length / millisecond components.

e.g. (dur->ms (duration (note-length 8)) 120) => 250

get-instrument clj

(get-instrument {:keys [instruments] :as score} inst-name)

Returns the first instrument in :instruments whose id starts with inst-name.

parse-events clj

(parse-events input)

parse-events-or-error clj

(parse-events-or-error input)