189 results about "Piano playing" patented technology

A digitalized piano is disclosed and capable of network demonstration piano performing and real time video teaching. The digitalized piano comprises a mechanical piano, a computer host, a video information collection module, an audio information collection module, a key movement information collection module, a footboard movement information collection module, a key information and footboard information display screen, a touch display screen, a network data transmission module and a loudspeaker module. The computer host is connected with all modules via a USB bus. Via use of the digitalized piano disclosed in the invention, an entity teaching mode is replaced with a home self-learning mode and a network remote teacher guidance learning mode; piano learning demand in areas where high-quality piano teacher resources are not available can be met, and demand of users who hope to learn piano playing at home at low cost can be met.

The invention relates to an automatic music notation recording method and system based on audio and video information. The automatic music notation recording method includes the steps of collecting video data and audio data of piano playing, using the video tracing algorithm to obtain all the position information of the hands on a piano according to the collected video data, determining the played music notes played by a player and the playing time information corresponding to the music notes according to the position information of the hands, namely obtaining a music note alternative range sequence set of piano playing according to the collected video data, being called a video music note alternative range sequence set for short, using the audio automatic music notation recording algorithm to obtain the fundamental frequency information of the played music notes played by the player for the collected audio data, determining the played music notes played by the player and the playing time information corresponding to the played music notes according to the fundamental frequency information, and obtaining the intersection of the synchronized video music note alternative range sequence set and an audio music note alternative range sequence set to determine all the played music notes and the playing time information corresponding to the music notes.

The invention discloses an intelligent acoustics piano, having a piano learning-assisting function and a mute function. The piano comprises a main control board, wherein the main control board is provided with an MCU and a memorizer, a clock device, an input output interface and a sound card connected to the MCU; two ends of a sensor are respectively connected to a key and the main control board; and a key-pressing device, a display screen and a speaker are all connected to the main control board. A mute structure comprises a mute control device, a mute brake pedal and a damper steel wire rope that are connected by order, wherein the damper steel wire rope is connected with a damper connecting rod, the upper end of the damper connecting rod is provided with a mute damper to prevent a hammer from striking a string, and the lower end of the damper connecting rod is pivoted on the lower end of a braking steel wire shaft sleeve plate. The piano realizes a flexible teaching method of combining video with audio. Equipped with a professional music score system and an MIDI music score synchronizing system, the piano supports real-time score displaying and score progress displaying. Practicing piano playing with the mute function of the intelligent acoustics piano, the players can get better practice effect.

The invention discloses a piano lesson real-time evaluation system which comprises a teacher terminal, a student terminal and a server. By collecting teacher piano playing audio information and fingering information, theory explaination video information and classroom interaction video information during teacher teaching and collecting student class attendance interaction, audio information and fingering information when a student practices to play a piano and comment interaction, the piano lesson real-time evaluation system performs classroom real-time grading on playing intonation and fingering of a teacher, teacher classroom theory explaination, classroom interaction, a current course attendance ratio, playing intonation and fingering of the student and a student comment and then performs real-time comprehensive evaluation on a piano playing classroom according to a evaluation proportion of various grading results so as to be capable of acquiring the real learning condition of the student in real time and timely reminding the teacher to regulate a teaching method; and meanwhile, due to overall factors of participating to comprehensive evaluation, the piano lesson real-time evaluation system is objective and accurate and has a very high application value.

The invention discloses an auxiliary piano teaching device. The auxiliary piano teaching device comprises a sliding guide rod, wherein the sliding guide rod is in sliding connection with two sliding seats, each sliding seat is connected with a push-pull applying mechanism, a lower end of each sliding seat is fixedly connected with a connection rod, a lower end of the connection rod is provided with a sleeve ring, the sleeve ring is further connected with a glove, each finger part of the glove is respectively provided with a vibration module, the glove is further provided with a first wirelesscommunication module, a first micro processor and a power source module, the auxiliary piano teaching device further comprises a second micro processor, and the second micro processor is in signal connection with a storage module, the push-pull applying mechanism and a second wireless communication module. The auxiliary piano teaching device is advantaged in that in the piano playing learning process, student's hands can be automatically guided to to-be-played piano keys according to playing rhythms, beginners are made to easily grasp the position of the specific piano keys corresponding to each note, and the pressing rhythm of the key corresponding to each note and the pressing time interval among the keys can be excellently grasped in time.

The invention provides a piano playing musical note correction system. The system comprises a track display module, a note picking module, a sound picking module, a comparison module, and a data recording module. The comparison module is connected to the track display module. The similarity values of the notes are instantly marked by the track display module, so that the students can correct in real time during the practice. In this way, during the practice of playing, the student picks up the playing sound through the sound pickup device and converts the sound digital signal. At the same time, comparing the similarity between the above-mentioned sound digital signal and the note digital signal greatly improves the accuracy of the identification. The comparison result is marked in real time by the track display module on the notes of the practice playing track, so that the students can understand the playing situation. The timely detection of the notes with poor control makes the training process targeted, so that the students can practice on their own without the help of a teacher.

The invention discloses a piano playing learning method and a learning device, and relates to the field of artificial intelligence, capable of effectively improving learning efficiency and learning effect of a user. The method comprises the following steps: playing a playing video to a user, wherein the playing video comprises a target melody, playing fingering demonstration accompanied with the target melody and a music score playing progress accompanied with the target melody; with single notes of the target melody as a unit, playing the playing video note by note and indicating a key corresponding to each note which is in playing to the user, and continuing to play the next note of the played video after receiving the corresponding keys which are pressed down by the user; continuously playing the played video and monitoring whether the keys which are pressed down by the user are consistent with the target melody in the played video, and scoring the user in accordance with a monitoring result; and under a circumstance that the times that user's scores are greater than a preset score threshold exceed a preset time threshold, monitoring the user to play the target melody under a condition having no hints.

The invention discloses a piano training aiding device, mainly relating to the field of piano training auxiliary instruments. The piano training aiding device comprises a bottom board, wherein two bases are arranged on the bottom board, through holes are vertically formed in the bases, support posts are arranged in the through holes, a support plate is arranged on the tops of the support posts, two arc-shaped brackets are arranged on the top of the support plate, an upper clamp plate is arranged at one side of the bottom board, two support frames are arranged on the bottom of the bottom board, locking screws are arranged on the support frames, support blocks are arranged on the locking screws, lower clamp plates are arranged at one sides of the support blocks, a mounting plate is vertically arranged on the bottom of the support plate, a plurality of laser lamps are arranged on the mounting plate, and a control box is arranged on the bottom of the support plate. The piano training aiding device can be firmly fixed at the front end of a piano, so that support can be provided for the elbows and forearms of a player, meanwhile, the support height can be adjusted according to the demands, thus the playing posture of the player can be standardized, and the training on the piano playing reaction speed can be realized.

The invention discloses a piano playing evaluation method and system. The method comprises: obtaining to-be-evaluated music; obtaining sample music; extracting semitone features of the to-be-evaluated music and the sample music; with a dynamic time wrapping algorithm, carrying out matching and comparison on the semitone features of the to-be-evaluated music and the sample music to obtain a mismatching wrong time point; extracting a music signal of the sample music at the wrong time point; with a short-time Fourier transform method, processing the music signal at the wrong time point to obtain a frequency spectrum feature of the music signal; carrying out non-negative matrix decomposition on the correct frequency spectrum feature to obtain frequency spectrum features of all pitches in a chord; according to the frequency spectrum features of all pitches, calculating frequencies of all pitches; converting the frequencies of all pitches into notes; and outputting the notes. According to the piano playing evaluation method and system, the piano practice can find out a playing error by himself inpendnelty without accompany of a teacher and thus can carry out correction timely, so that the practicing efficiency can be improved.

The invention relates to an error correction method and system for piano playing. The error correction method comprises the steps of recording a video of piano playing performed by a player by referring to a music score by using a depth camera; acquiring key pressing information of the player when playing the piano from the video of piano playing; extracting video characteristic information according to the key pressing information, and recording the video characteristic information into a video characteristic file corresponding to the music score; and comparing the video characteristic file corresponding to the music score with a standard video characteristic file of the music score, and performing error correction on the player according to a comparison result. The error correction system comprises a first acquisition module, a second acquisition module, an extraction module and a processing module. The error correction method and system can help the player to find errors in the playing process, thereby achieving assisted teaching for the piano to a certain extent. Meanwhile, the interestingness of playing is increased, and the enthusiasm of the player is improved.

The invention discloses a detection device of piano playing intonation. The detection device of piano playing intonation comprises a sound collecting module, an audio collecting module, a hand shape detecting module, a display module, a contrast evaluation module, a warning module, a central processing unit and a wireless communication module; the audio collecting module is used for receiving an audio electronic signal, the hand shape detecting module is used for detecting movement direction and a movement velocity value of each finger, a bending degree of each finger and pressing force when the piano is playing, and the wireless communication module is used for sending the data to a detection center. The detection device of the piano playing intonation provided by the invention can detect which key is pressed and the press force degree when the piano is played by setting a press sensor module, conduct data acquisition and analysis processing on the sensor module through a data processing device, and accurately recognize the intonation when the piano is played.

The invention relates to a piano playing handshape detection device which comprises a glove, moving posture sensors, a connecting circuit, a data processing device and a power supply. One moving posture sensor is arranged at the position of the hand back of the glove or the position of the heart of palm of the glove, the corresponding positions of proximal phalanxes of five fingers of the glove each are provided with a moving posture sensor, and the moving posture sensors are used for detecting handshape and finger movement direction and movement speed values in real time. The moving posture sensors are communicated with the data processing device through the connecting circuit, the data processing device is responsible for processing signals of the moving posture sensors, and the power supply is responsible for supplying power. Data collection and analysis processing are performed on the moving posture sensors through the data processing device, various handshapes during piano playing can be accurately identified, not only can the static handshape during piano playing be identified, but also the dynamic handshape can be identified, and moving posture sensor state values corresponding to time are recorded.

The invention relates to an intelligent piano playing system. The intelligent piano playing system comprises an execution unit and a controlling unit, wherein the execution unit comprises a horizontal guide rail and two machine hands which can move left and right on the horizontal guide rail, the horizontal guide rail is provided with a base support, two parallel horizontal guide rods are arranged on the top face of the base support, racks parallel to the horizontal guide rods are arranged on the lower portion of the base support, each of the machine hands comprises a chassis, seven bionic fingers are connected with a finger support in a pivot mode on the front part of the chassis, a steering engine which controls the fingers to complete knocking motions is arranged on the back portion of the chassis, the steering engine is connected with the fingers through finger linkage rods, a box type unit sliding block which is connected with the guide rods in sliding fit is arranged on the lower portion of the chassis, a steeping motor which enables the machine hands to move left and right is arranged below the chassis, gears meshed with the racks are arranged on an output shaft of the stepping motor, the control unit comprises upper computers and lower computers, and the lower computers are arranged on the machine hands and connected with a general control platform through recommend standard (RS) 232 ports.

A piano practice system is provided, which is applied in an electronic device. The electronic device comprises a microphone and a display screen. A projection device is arranged at the bottom of the display screen. The display screen is fixed by a bracket, and the bracket is connected with a piano. The system comprises a storage module, which is used for importing and storing music electronic files for piano practice. An analysis module, configured to analyze the music score electronic file according to notes, timbre and rhythm; The grade selection module is used for selecting the grade mode corresponding to the practitioner before the piano playing practice, including three grades of entry level, primary level and advanced level; An audio recognizing module for recognizing pitch, beat, tone color and volume of sound played by an exerciser when playing a piano repertoire; The calculation and evaluation module is configured to calculate and compare the analysis result of the analysis module and the recognition result of the audio recognition module, and generate corresponding exercise evaluation data according to the comparison result.

The invention discloses an intelligent piano playing training system. The system comprises a key position acquiring unit, a data communication unit, an indicator light unit, a contrast evaluation unit, a display unit, an automatic playing unit, a wireless communication module and a central processing unit. The data communication unit is used for receiving music score data and timbre data in real time. The key position acquiring unit is used for receiving stress signals generated by a pressure sensor on keys, speed signals generated by a speed sensor on keys, and key pressing duration signals generated by a duration sensor on keys in real time. The electronic devices installed in the piano are used for recognizing and recording physical indexes reflected by keys and strings during playing, recorded data are transmitted to a smart phone or tablet computer through an internal wireless network and compared with preset music by means of an application software program, so that playing details can be analyzed, evaluated and graded and users can better learn about the performance level of themselves, and the using effect is good.

The invention discloses a real-time evaluation method and system for a network piano lesson, and relates to the technical field of network communication. The real-time evaluation method is characterized in that the attendance rate of students is firstly counted at the beginning of the lesson, then the piano playing intonation rate of the students is calculated according to audio signals acquired by a student terminal, the number of positive expressions in facial expressions of the students is counted according to image signals acquired by the student terminal, finally comprehensive evaluation for a teacher is calculated according to the attendance rate of the students, the playing intonation rate and the number of the positive expressions, a teacher terminal displays the evaluation and reminds the teacher to adjust the teaching method timely. Real learning conditions of the students are acquired in real time, and the calculation result is objective and accurate, so that the real-time evaluation method has very high application values.

The invention provides an intelligent piano music score page turning system, which is applied to an electronic intelligent page turning device. The electronic intelligent page turning device comprisesa microphone, a camera and a display screen, wherein the camera is arranged at the bottom of the display screen; the display screen is fixed by a support; and the support is connected with the piano.The system comprises a selection module, a storage module, a voice import module, a calculation module, a human face capturing module, a display module, a management module and a power supply module.Two page turning modes of voice page turning and action page turning are set; through the voice import module, the audio information in the case of piano playing can be imported and recognized; through the calculation module, the playing audio can be compared with an electronic music score stored in the system; and when the tail end of the page arrives, the display screen is triggered for page turning. Page turning and reading of the music score can be realized in a condition in which a performer does not need to perform limb movements.

The invention relates to a video characteristic extraction method and system. The method comprises the following steps that a depth camera records a video in which a pianist plays the piano accordingto a score; all pictures are extracted from the picture frame by frame, and key pressing information, including positions of keys pressed by fingers of the pianist and the key pressing depths and timelengths, when the pianist plays the piano is obtained from each frame of picture; and video characteristic information is extracted according to the key pressing information, and recorded in a videocharacteristic file corresponding to the score. Thus, the video characteristics of piano playing can be extracted rapidly, and playing of the pianist can be analyzed.

The invention discloses an intelligent piano-playing toy robot. The toy robot comprises an intelligent toy robot and a piano key assembly which are arranged independently, wherein the piano key assembly comprises a base for fixing the robot, metal keys capable of sending out double octaves, a piano stand on which the metal keys can be placed, and a stick for knocking keys; one end of the stick is provided with a ball, and the other end of the stick is provided with a connecting suite connected with the hand of the intelligent toy robot; the keys are arranged in an arc shape horizontally around the front of the intelligent toy robot in sequence; and the two metal keys having double octaves are arranged in a bilateral symmetric manner. The intelligent piano-playing toy robot mainly has the advantages that the performance of piano playing action can be simulated by driving actions of two hands and driving the stick to knock the metal keys having double octaves by virtue of the music control program in the intelligent toy robot, emotional performance can be realized, and a vivid early-education experience is brought to children.