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 piano playing robot includes robot body, hardware control system, mechanical executing system and software control system. The hardware control system is installed inside the abdomen and the software control system inside the memory of embedded controller. The mouth, eyelid, eyebrow, fingers of the robot are connected to corresponding solenoids; the solenoid drivers are connected to the data acquisition card; the arm, waist, leg and neck joints are connected to reducer of servo motor; the rotating coder of the servo motor is connected to the motion card; the CCD video cameras installed inside the eyes of the robot is connected to the image processing card; and the embedded controller, motion control card, data acquisition card and image processing card are installed in lamination mode. Based on the piano music beat, the robot plays like a true piano player flexibly and accurately to reach the aims of both education and amusement.

The present invention provides a scoring system for the piano grading test. After the grading scoring system receives an audio signal during the piano playing process, the system respectively scores the pitch accuracy of the audio signal, the rhythm accuracy of the audio signal, the track integrity and the timbre expressive force, and then conducts the comprehensive evaluation scoring operation. Therefore, the piano learning and grading is facilitated by the system. The grading scoring system comprises a track selection unit, a signal receiving unit, an information extraction unit, a playing scoring unit and a report outputting unit. The track selection unit is used for selecting a track for musical performance scoring. The signal receiving unit is used for receiving the audio signal during the playing process. The information extraction unit is used for extracting the playing information of the audio signal, and transmitting the playing information to the playing scoring unit. The playing scoring unit is used for comparing the playing information with the track selected by the track selection unit and calculating a scoring result. The report outputting unit is used for generating and outputting a scoring report. According to the technical scheme of the invention, the timbre expressive force is incorporated into the evaluation standard for the piano grading test.

The invention discloses an ancillary piano-playing device which comprises a song-inputting mechanism, a song-selecting mechanism, a processor, a signal-receiving mechanism and a monitor. The song-inputting mechanism is used for inputting and storing songs to be played in the processor, the song-selecting mechanism is used for calling the songs stored in the processor for a user to select, the processor is used for converting a signal played by a piano into a digital signal and displaying rhythm to be played in the next step on the monitor according to the digital signal, the signal-receiving mechanism is used for receiving the signal played by the piano and feeding back the signal played by the piano to the processor, and the monitor is used for displaying the rhythm to be played in the next step on the screen and dynamically indicating the user to play. In addition, the invention also provides an ancillary piano-playing realizing method so that the piano is convenient to play. The ancillary piano-playing device provided by the invention can lower the piano-playing difficulty so that a common person not at a special level can also play the piano. The invention is beneficial to popularizing and generalizing pianos.

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 provides a piano with a scoring function and a scoring method thereof. The piano comprises a piano body, pressure sensors and a main control chip, wherein the piano body comprises keys arranged on the surface; the pressure sensors are arranged on the upper surfaces of the keys, and are used for sensing pressing information of fingers pressing the keys; the main control chip is connected with the pressure sensors, and is used for recording the pressing information, scoring the pressing information and outputting a scoring result. The scoring method comprises the following steps: sensing the pressing information of the fingers pressing the keys by the pressure sensors; recording the pressing information, analyzing the pressing information, scoring the pressing information and outputting the scoring result by the main control chip. Through the piano with the scoring function and the scoring method thereof, a player can know whether a fingering method in the own playing process is correct according to the scoring result, and can correct the fingering method according to the scoring result, so that the player can correctly master a piano playing fingering method, therefore, the learning efficiency is improved and the learning cost is reduced.

The invention discloses a piano playing smart evaluation method. The method includes collecting MIDI audio digital signals of a user and converting the signals to playing data; matching a user playingtime sequence with a master playing time sequence in a time line; performing intonation judgment on note groups in user playing based on note groups in master playing; performing pace judgment on note relative duration of user playing based on note relative duration of master playing; calculating the relative speed of user playing speed based on master playing speed and performing speed judgment;performing power judgment on note power of user playing based on note power of master playing; performing comprehensive evaluation on playing intonation, playing pace, playing speed and playing power; marking the comprehensive evaluation result on a stave on a smart terminal. The invention also provides a piano playing smart evaluation system. The invention has beneficial effects that accurate, objective and multi-aspect comparison is made on exact user sound source files with professional playing tunes and user playing level is reflected truly.

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.

The invention discloses a virtual piano based on 3D depth camera module and a method for realizing same. The virtual piano comprises a projection device, a 3D depth camera module, a player, a communication module and a processing module. The projection device is used for projecting the piano key pattern and transmitting the projected key position parameters to the processing module through the communication module. The 3D depth imaging module is used for collecting the depth image of the user's hand in real time and transmitting it to the processing module through the communication module. Theplayer is used for playing music tones; The processing module is used for analyzing the depth information of the hand according to the depth image of the hand, recognizing the knocking action of thehand, judging the knocking key situation according to the key position parameters, and controlling the player to play the corresponding music tone of the key according to the knocking key situation. The virtual piano can accurately identify the movement of the finger skeleton of the user, accurately judge the position of the finger percussion, play the corresponding music sound, smoothly simulatethe piano playing, and also can bring good interactive experience.

The invention is applicable to the field of piano playing, and provides a piano monitoring method and device, a computer device and a storage medium. The method comprises the following steps of acquiring a depth image of a playing area by an image acquisition device; acquiring hand posture information of a player according to the depth image of the playing area; using the trained neural network classifier to recognize the hand posture information and judging whether the posture corresponding to the hand posture information is correct or not; and outputting the judgment result to the player. Based on the application of the depth image and the artificial neural network, the invention realizes the judgment of the hand movement of the piano player, thereby realizing the uninstructed supervision of the hand movement / posture of the piano player / learner, saving a large amount of resources and improving the piano teaching efficiency.

The invention provides a piano playing teaching assistance device. The device comprises a plurality of pressure sensors arranged on the upper surfaces of each piano key of a piano respectively, a notedata acquisition unit, a storage unit, an analysis and comparison unit, a playing standard degree scoring unit, a wireless communication module and a microprocessor; the microprocessor receives noteinformation acquired by the note data acquisition unit, stores the note information in the storage unit in the form of played music score data, and at the same time, receives scores of an analysis comparison result which are given by the playing standard degree scoring unit, and sends the scores to a teacher receiving terminal through the wireless communication module; and the microprocessor further coordinates the above units and modules to work. With the piano playing teaching assistance device of the invention adopted, a piano learner can timely know the playing effect of the piano learnerin piano playing practice, and can get the judgment of an instructor in time, and therefore, the piano learning efficiency of the learner can be greatly promoted.

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 a method for improving the piano playing sound quality of a loudspeaker. The method comprises the steps of: obtaining an input signal including first audio data, wherein the first audio data includes first frequency characteristics; judging whether the first audio data is audio data including excitation piano noise or not; and, if the first audio data is the audio data including excitation piano noise, dynamically compressing the first frequency characteristics to obtain second audio data including second frequency characteristics, and feeding back a processing signal including the second audio data as an excitation signal to the loudspeaker. Compared with the related technology, the method for improving the piano playing sound quality of the loudspeaker provided bythe invention has the advantages that: the audio data capable of exciting piano noise in the input signal is dynamically compressed; the noise of the loudspeaker is reduced while a device is not modified; therefore, the acoustic performance of the loudspeaker is improved; and furthermore, the method provided by the invention is simple in step and high in implementation.

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 provides a construction method of a virtual piano playing system based on Kinect, and the Kinect equipment is used to complete the 3D reconstruction of the scene. The virtual keyboard area is selected in the appropriate plane in the scene, and the virtual keys are generated. After the keys are pressed and detected, the corresponding notes are set to play, so that the function of playing the virtual piano can be realized. As an interactive mode between a human and a machine, the invention has simple and convenient virtual keyboard, and can be extended to the fields of intelligenthome, games, robots and the like. The OpenGL library is used as the display, and the value of fingertip position is combined to judge the state of the keys, which improves the accuracy of key playingand can bring good user experience. When the virtual piano is realized, a three-dimensional model is established, which makes the picture more three-dimensional and satisfies people's immersive experience.

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.

The invention relates to a piano trainer and belongs to the field of auxiliary exercise of musical instruments. The piano trainer is characterized by being composed of straps, arm supports and a table plane. Forearms are wrapped in the straps. Snap fasteners at one ends of the straps are connected with snap fasteners at the other ends of the straps, snap fasteners at the bottoms of the straps are connected with snap fasteners on the arm supports, and cylinders of the arm supports are placed on the table plane between a front transverse stop lever and a rear transverse stop lever. A plurality of hemispheroids below the cylinders slide on the table plane through oily lubricating substances, and the front transverse stop lever and the rear transverse stop lever control the sliding tracks. When a user plays the piano, the arms keep parallel with the plane of a piano, the arm supports support and slide the arms to make the arms fall down or move left and right, so that the two arms can be relaxed naturally, and a user can maintain the right and natural piano playing posture all the time, prevent bad postures of finger shrinking, wrist sinking, arm stiffness and the like and develop a good playing habit.