4 results about "Piano" patented technology

The invention belongs to the field of piano teaching, and particularly relates to a low-delay real-time interaction system for piano teaching, which is characterized in that: an electronic piano or MIDI (Musical Instrument Digital Interface) equipment of a teacher or a student is connected with computer equipment through an MIDI data line; mIDI signal transmission: the browser transmits and receives MIDI signal data through a communication protocol between the electronic musical instrument and the computer; numerical values corresponding to the keys change colors; after receiving the MIDI signal data, outputting data that note elements corresponding to keys are converted from white or black to other colors through a keyboard pressing event of a webpage script language, and outputting in the opposite directions when a keyboard bounces up; a WebRTC protocol is used for transmitting MIDI signal data; pushing the stream to a cloud streaming media server; audio and HTML5 simulation piano pictures are pushed to a cloud streaming media server in a low-delay manner through a WebRTC protocol, so that teachers or students can visually see specific piano keys when playing the piano.

The invention discloses an adjustable piano string striking point positioning tool and a positioning method thereof. The positioning tool comprises: a bottom leaning plate, wherein the bottom leaningplate is provided with a movable sliding block guide rail arranged in the lengthwise direction; a movable sliding block that forms a sliding pair with the movable sliding block guide rail, and a firstscale strip corresponding to the movable sliding block is arranged on the movable sliding block guide rail; the first locking piece that is arranged on the bottom leaning plate and is used for locking the relative positions of the movable sliding block and the bottom leaning plate; the movable caliper guide rail that is vertically fixed at the front end of the movable sliding block; the movable caliper that is mounted on the movable caliper guide rail in an up-and-down movable manner; and the second locking piece that is arranged on one side of the movable caliper guide rail and is used for locking the movable caliper. The tool can be suitable for string striking sizes of pianos of different specifications, and is high in universality, simple in structure and convenient to operate.