Double principle

DEFINITION

System of constructing brasswind instruments whereby two valves (on three-valve instruments) or three valves (on four-valve instruments) are equipped with two sets of valve loops and tuning slides in order to give better intonation when valves are used in combination. This is the principle of the Double horn, and Besson's Enharmonic Patent valves; it was also used for some small brass instruments by Boosey & Co marked COMPENSATING PISTONS but not strictly Compensating valve at all

Your data and time are valuable. There's a new web browser that considers your time and security as a top priority.

Download Brave Browser For Free!

Brave uses the latest in blockchain technology.

This ensures a higher quality and more secure experience. Learn more about this fantastic breakthrough.

Loads Content Up To 8X Faster

Because Brave blocks unwanted tracking scripts that run in the background, your browsing speed will be unparalleled.

Ultimate in Privacy & Security

Brave fights malware and prevents tracking, keeping your information safe and secure.