import { TrackerBar } from "../TrackerBar.js";
/**
 * The commands of the Welte-Mignon T-98, as its tracker bar reads them.
 *
 * They are not the T-100's. Where the T-100 latches a function on with
 * one perforation and cancels it with a second, the T-98 holds it for
 * as long as one continuous perforation lasts (Hagmann, pp. 89 f. and
 * 100–103; Phillips, p. 121), so none of these is an On or an Off. The
 * two sforzando valves name the end of the range they pull towards.
 * @category Systems and emulation
 */
export declare const welteT98ExpressionTypes: readonly ['SforzandoPiano', 'SforzandoForte', 'Mezzoforte', 'Crescendo', 'SustainPedal', 'SoftPedal'];
/**
 * A command of the Welte-Mignon T-98.
 * @category Systems and emulation
 */
export type WelteT98ExpressionType = typeof welteT98ExpressionTypes[number];
/**
 * Welte-Mignon T-98 ("green Welte"), cf. Hagmann, Anhang 11 (p. 179)
 * and Phillips, p. 121.
 *
 * 98 positions at nine to the inch on paper 286 mm wide, five expression
 * valves on each side and 88 note positions between them, A0 to c⁵ (MIDI
 * 21 to 108). A roll re-cut from a Mignon master uses only the middle 80
 * of those, C1 to g⁴, which is the T-100's compass.
 *
 * The rewind is not a valve of its own: a long perforation on the bass
 * sforzando-piano position drives it, which is why that position is
 * named for the valve and the rewind stated separately.
 *
 * Measured against Julian Dyer's scan of the T-98 copy of roll 225
 * (Grünfeld, Träumerei): 98 columns 2.818 mm apart on paper 285.6 mm
 * wide, notes on the middle 80 columns, the sustain valve punched 52
 * times in the music where the T-100 copy latches its sustain on 52
 * times. A 53rd perforation on that track belongs to the test pattern
 * after the rewind.
 *
 * The paper speed is the Deutsches Museum's figure for its Welte grün /
 * T 98 rolls, 220 cm/min. Phillips gives 7 ft/min = 2.134 m/min (p. 121);
 * midi2exp's and PlaySK's green defaults of 72.2 and 72.27, read as the
 * Stanford convention of feet per minute times ten, are 2.201 m/min, which
 * is the museum's figure; and the two copies of roll 225 last the same
 * time if the green starts at about 7.30 ft/min. Welte's own booklets give
 * no speed, only that the roll must run from the first "A" of the chromatic
 * scale to the cross-line bearing the dial number in half a minute
 * (Skala-Rolle 98 §1b). This is documentation; what sets the emulator's
 * time axis is the spool.
 * @category Systems and emulation
 */
export declare const welteT98: TrackerBar;