A brass instrument according to an embodiment comprises a main tube extending from a mouthpiece receiver to a bell, the main tube including a first divided part, a second divided part, and a third divided part sequentially divided on an airway path from the mouthpiece receiver to the bell, a first tuning slide connecting the first divided part and the second divided part, and a second tuning slide connecting the second divided part and the third divided part. The first tuning slide and the second tuning slide adjust a total length of the main tube.

A brass instrument according to an embodiment comprises a main tube extending from a mouthpiece receiver to a bell, the main tube including a first divided part, a second divided part, and a third divided part sequentially divided on an airway path from the mouthpiece receiver to the bell, a first tuning slide connecting the first divided part and the second divided part, and a second tuning slide connecting the second divided part and the third divided part. The first tuning slide and the second tuning slide adjust a total length of the main tube.

The disclosure provides an approach for tuning musical instruments. In one embodiment, a tuning application determines frequencies of a series of notes played on a brass instrument, either with open tuning or with a valve pressed. As a musician holds a last note in the series and a tuning or valve slide is moved, the tuning application determines, based on a change in frequency of the last note and the measured frequencies of the other notes in the series, the change in frequency of the other notes. The tuning application then determines a compromise tuning that minimizes the total difference between the current frequencies of the notes and known note frequencies in a frequency table or previously tuned note frequencies if any of the notes were previously tuned. Upon achieving the compromise tuning, the musician or an actuator is instructed to stop moving the tuning or valve slide.

An impedance variator for limiting or suppressing the parasitic harmonics of a wind musical instrument, the impedance variator including at least one permanent magnet, the impedance variator including a brass tube intended to surround a substantially tubular or cylindrical portion of the wind instrument and the impedance variator including a manner for fastening the tube on the portion of the wind instrument.

Disclosed is a tuning guide for tuning a brass musical instrument having a tuning slide. The tuning guide includes (1) visual markings provided along one arm of the tuning slide indicating a plurality of tuning positions of the tuning slide and (2) a tuning log for logging a tuning history specific to both the instrument and a particular player of the instrument. The tuning log includes a plurality of tuning records, each tuning record including (i) one or more conditions fields, each conditions field for recording an environmental condition and (ii) a tuning position field for specifying a tuning position at which the instrument is properly tuned under the environmental conditions recorded in the one or more conditions fields.

An impedance variator for suppressing the parasitic harmonics of a wind musical instrument, the impedance variator including at least one permanent magnet, the impedance variator including at least two brass bearing plates separated from each other by a brass tube, the tube including a manner for setting the distance between the two plates, and each of the two plates being intended to bear respectively against two wall portions of the wind instrument extending substantially parallel to one another.

An impedance variator for suppressing the parasitic harmonics of a wind musical instrument, the impedance variator including at least one permanent magnet, the impedance variator including at least two brass bearing plates separated from each other by a brass tube, the tube including a manner for setting the distance between the two plates, and each of the two plates being intended to bear respectively against two wall portions of the wind instrument extending substantially parallel to one another.