43 results about "Piano tuning" patented technology

A device for tuning a piano that attaches to adjacent strings of the piano and positions magnetic pickups over the strings with the magnetic pickups detecting the vibration of the strings without interference with them.

A piano tuning detection device and an implementation method thereof relate to the technical field of piano tuning, and in particular, to a device and a method for detecting a string frequency in the process of tuning a piano, which solves the technical problem that the professional requirement is high, the tuning precision is poor, and the operation is inconvenient in the existing piano tuning work. The tuning detection method comprises the following steps: a. sticking a laser recognition sticker on a string to be detected; b. illuminating the laser recognition sticker with a light ray from a laser head; c. pressing a key corresponding to the string to be detected; d. providing a detection signal source to a central processing unit to detect an actual frequency value of the string; and e. performing comparison. The piano tuning operation is implemented according to the principle that the laser head reads a disc in a driver without requiring a special auditory sense of a tuning person. The piano tuning operation can be accomplished by a common operator, so the operation is convenient and the tuning precision is high.

The invention discloses an electronic label-based programmable control semi-automatic guide rail-type piano tuner. The piano tuner comprises a motor, a planetary speed reducer, a power transfer mechanism of a turbine worm mechanism, a controller, an electronic label and a guide rail-type piano tuning mechanism, wherein the power transfer mechanism is fixed on the guide rail-type piano tuning mechanism; and the electronic label is annularly stuck on the saddle of the piano. The tuning method of the invention comprises the following steps: an electronic label module of the controller reads a frequency set by the saddle to be tuned; a pickup reads the saddle to be tuned to obtain a software measurement frequency; and the frequency difference is converted into a certain step length drive amount by an algorithm of a central processing unit of the controller to send an instruction to the power transfer mechanism so as to finish semi-automatic tuning of the saddle and gradual tuning of the saddle of the piano, wherein the step length can be flexibly adjusted according to precision and experience. The invention saves manual tuning and is a high-precision special tuning tool for professional tuners and tuning lovers.

The present invention provides a piano tuning system. The piano tuning system is applied to an electronic device. The electronic device comprises a microphone and a display screen; the display screenis fixed through a bracket; and the bracket is connected with a piano, the system comprises a display module, a storage module, an audio collection module, an audio coding module, a waveform comparison module and a calculation output module. The invention provides a piano tuning method. The method includes the following steps that: the system is started, a spectrum display range and a standard audio source file required for calibration are selected; the audio collection module receives sound signals sent by piano strings and sends the sound signals to the audio encoding module; the audio encoding module performs spectrum analysis on the received sound signals so as to obtain a sound signal spectrum and draws a corresponding adjustment peak curve on the basis of preset fixed frequency pointpeaks; and a standard sound source file spectrum is obtained, and a corresponding standard rhythm peak curve is drawn on the basis of preset fixed frequency point peaks is acquired.

The invention discloses a full-automatic piano tuner and system. The full-automatic piano tuner and system is characterized by comprising a motor assembly, lateral supports are arranged at two ends above the motor assembly, at least two top cover supports are arranged between the lateral supports, gear guide rails are arranged between the lateral supports and the top cover supports respectively, a box is arranged at the lower end of the motor assembly, a circular-arc-shaped clamping groove is formed in one face of the box, a piano tuning wrench head is arranged in the clamping groove and moves along the same in an arc-shaped manner, an image recognizing and positioning device is arranged below the clamping groove, an infrared positioning device is arranged on one side of the image recognizing and positioning device, and a manipulator is arranged on the lower portion of the box. The full-automatic piano tuner and system is simple in structure, convenient to operate and supportive of batch production, cost is controlled effectively, and devices can be utilized to replace manpower to realize full-automatic tuning.

The invention provides a piano tuning method. A tuning system used comprises a received sound comparison and control system, an automatic tuning and sound stopping device, an automatic playing deviceand a support platform, wherein the received sound comparison and control system comprises a sound reception microphone, a comparison system, a logic system and a control system; the automatic tuningand sound stopping device comprises an automatic tuning device and a sound stopping device; the automatic playing device comprises a positioning platform, a power box, a moving screw, a guide rail, apositioning bracket, a rubber fingertip, a moving platform, a torque motor and a mechanical arm. Key overtones are recorded by the sound reception microphone in the received sound comparison and control system and converted into digital signals, the digital signals are stored in the received sound comparison and control system for comparison, the overtone interference caused by music wire vibration is excluded to improve the accuracy of sound reception, at the same time, the tension on music wires is monitored in real time to protect the music wires from being broken by tuning.

An improved piano tuning hammer for use by piano technicians, that allows dramatically increased tuning accuracy, ease of use, and speed. The improved tuning hammer is comprised of relatively large cross-sections. The improved tuning hammer may be comprised of lightweight materials. The relatively large cross-sections provide increased stiffness, which serves to increase the effectiveness of the tuning process.

A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.

An improved piano tuning hammer for use by piano technicians, that allows dramatically increased tuning accuracy, ease of use, and speed. The improved tuning hammer is comprised of relatively large cross-sections. The improved tuning hammer may be comprised of lightweight materials. The relatively large cross-sections provide increased stiffness, which serves to increase the effectiveness of the tuning process.

One embodiment of an improved piano tuning hammer which eliminates the tilting force which, when a tuner operates a conventional “L”-shaped tuning hammer, invariably accompanies the application of a turning force to a tuning pin mounted in a pin block. The improved hammer has an overall shape like the letter “C,” so that its handle lies substantially in the plane of the pin block, allowing the tuner to turn the pin without tilting it. The embodiment presented is lightweight and rigid, and clears the case structures of most pianos.

The invention discloses a piano tuning tool, and belongs to the field of musical instrument making. The piano tuning tool has such characteristics as being time-saving and labor-saving, simple and convenient to operate, and easy to master. On the basis of a screw propelling principle, a multi-start thread is adopted and a screw sleeves inside a nut; the multi-start thread, which is relatively high in lead angle, relatively low in friction force and easy to slip, is favorable for force transmission and motion. Depending on the principle, a regulating screw is designed as a going-through shaft which sleeves inside a locating nut; a circular shaft above the regulating screw is embedded in a spherical round hole of a tuning spanner; an octagonal inner hole below the regulating screw sleeves a tuning piano column; a U-shaped fork on one side of the locating nut is clamped and located on an adjacent piano shaft. Therefore, the tuning spanner can be pulled through relatively small force, and then the regulating screw is driven to do uniform motion in the locating nut, thus tuning a piano.

The invention discloses an automatic piano tuning device, and relates to the technical field of piano tuning. The automatic piano tuning device comprises a moving device, a control device, knocking devices and an adjusting device, the control device and the moving device are slidably mounted, the moving device is used for moving the automatic piano tuning device, and the control device is used for adjusting the piano key knocking force. The number of the knocking devices is three, the knocking devices are fixedly installed on the control device at equal intervals, the knocking devices are used for knocking piano keys, the adjusting device and the control device are fixedly installed, the adjusting device is used for stirring strings and adjusting the tightness of the strings according to sound made by the strings, and the device is simple in structure, easy to operate, time-saving and labor-saving.

The invention discloses a mobile phone terminal based piano tuning system. The mobile phone terminal based piano tuning system comprises a sound sensor used for receiving piano sound signals, a piano sound signal preprocessor, a user intelligent mobile phone terminal, a cloud server and tuner intelligent mobile phone terminals; the sound sensor is arranged at the inner side of a piano shell and is close to the edge of the piano string which corresponds to a to-be-measured tone; the signal output end of the sound senor is connected with the signal input end of the signal preprocessor; the signal output end of the signal preprocessor is connected with the signal input end of the user intelligent mobile phone; the signal output end of the user intelligent mobile phone is connected with the database input end of the cloud server; and the database signal output end of the cloud server is respectively connected with the signal input ends of multiple tuner intelligent mobile phone terminals. The mobile phone terminal based piano tuning system provides services for users with piano tuning requirements, reduces requirements of piano tuning for professional special crowds and improves piano tuning precision.

An improved piano tuning lever includes a handle with a loop or ring large enough to fit the fingers of a user's hand, thereby providing a grip around the perimeter of the loop or ring which is independent of the axis of the handle. The resulting grip affords improved ergonomics and may lessen stress in the user's wrist and hand when having to conform to various angles of the handle axis as the tuning lever is moved from tuning pin to tuning pin over the course of a piano tuning. The improved handle and loop or ring may be made any size or shape, symmetrical or asymmetrical and with its core being solid, hollow, or filled. Another embodiment of the piano tuning lever includes a spline designed to mate with an inventive piano tuning lever head having complementary splines.

The invention relates to a fully automatic piano tuning device and method, and belongs to the field of piano tuning. The device comprises a casing, a sound pickup module, a tuning rod module, a stringpressing arm module, an LCD display screen and a control module, wherein the control module is connected with the sound picking module and is used for receiving sound signals obtained by the sound pickup module, processing the sound signals, and acquiring the frequency spectrum information of the sound signals; the control module is connected with a tuning rod motor in the tuning rod module and is used for controlling the tuning rod motor to rotate; the control module is connected with a string pressing motor in the string pressing arm module, and is used for controlling the string pressing motor to rotate; the control module is connected with the LCD display screen and is used for realizing the display regulation state and instruction reminding of the LCD display screen. By the method, the device is arranged on a string shaft of a corresponding piano key in a piano; a frequency spectrum curve fitting method is used for simulating the human ear system; the similar matching is realizedon the regulation peak value curve and the standard tonality peak value curve; the high-quality piano tonality is further regulated.

The invention provides a piano tuning instrument, which specifically comprises a signal conversion controller, a regulating rod, a regulating screw cover and a tremolo sheet, wherein the signal conversion controller is a central control mechanism; and the central control mechanism is used for converting vibration information transmitted by the tremolo sheet into control information, and subsequently the regulating screw cover is controlled to regulate nuts, connected to steel wires, in a piano, therefore the purpose of quantitatively and accurately tuning the piano is finally achieved. The piano tuning instrument disclosed by the invention, by adding the signal conversion controller, can effectively the problem that it is difficult for common people to control tuning, and can achieve the effect of automatically tuning in an intelligent mode, so that the piano tuning instrument is more precise in tuning and simple to operate, and the piano tuning instrument can be widely popularized and used.

The invention discloses a fine piano tuning handle, and belongs to the technical field of auxiliary adjusting tools of musical instruments. The fine piano tuning handle comprises an adjusting rod, wherein a handle is arranged at one end of the adjusting rod; an adjusting head is arranged at the other end of the adjusting rod; the middle part of the adjusting head is provided with a first matchinghole; a square block is arranged on the middle part of the adjusting rod; the outer surface of the square block is provided with a connecting rod; an angle of 90 degrees is formed between the connecting rod and the adjusting rod; the outer surface of the connecting rod is provided with a fixing base; a second matching hole is formed in the middle part of the fixing base at the bottom end of the connecting rod. The fine piano tuning handle is simple in structure, is low in manufacturing cost, is convenient and practical, and is suitable for hobbyist and professional. A worm is driven to rotatethrough the handle in order to drive a worm gear to rotate. When the worm rotates for one circle, the worm gear rotates for one tooth, so that the fine adjustment for piano is realized, and the influence of over-tightness or over-looseness of the strings on the using effect of the piano is avoided.

The invention belongs to the technical field of piano manufacturing. A method for manufacturing piano tuning peg plate comprises the following steps: choosing a log, cutting off, steaming and cooking, rotary-cutting or saw-cutting a single plate, drying, applying glue, ageing, cold pressing, hot pressing, cutting edge, sanding, fragmenting, and acquiring the finished products, wherein the thickness of acquired tuning peg plate is 3.5-4.5cm; the thickness of the single plate is 2.7-6.0mm; the number of single plate layer in the plate blank is 7, 9 or 11; the density of the finished product tuning peg plate is 0.85-1.0g / cm3; and the moisture content is 6-10%. The acquired tuning peg plate has proper nail-holding force and can be used for conveniently tuning. After the tuning peg plate is used for a long time, the tuning peg plate still has better elasticity, toughness, and maintained nail-holding force, and the intonation stability of piano is ensured.

The invention relates to the technical field of music equipment, in particular to a multifunctional tuning hammer for a piano, which comprises an outer tube, a movable rod is sleeved in the outer tube, external threads are punched at two ends of the surface of the movable rod, internal threads matched with the external threads are punched at the left side in the outer tube, and a storage groove ispunched at the left side of the movable rod. According to the invention, the movable rod, the U-shaped iron, the concentric-square-shaped hammer, the square hole and the *-shaped hole are arranged, so that the problems that an existing piano tuning hammer is poor in practicability, the angle between a sleeve and a handle cannot be adjusted, the length of the tuning hammer handle cannot be increased, and carrying is inconvenient are solved. According to the multifunctional tuning hammer for the piano, the length of the handle can be adjusted according to the needs of a user, the labor amount is reduced, the concentric-square-shaped hammer is provided with two types of sleeves at the same time, the hammer is suitable for all piano string winding rods at present, the practicability of the tuning hammer is improved, and the hammer is more convenient to carry by the user after being stored.

The invention relates to a method for preparing an anti-rusting liquid for a piano tuning peg. According to the technical scheme, three liquids are uniformly stirred according to a ratio that every 100 parts of the liquids comprise 8 parts of sodium nitrite, 0.6 part of triethanolamine and 91.4 parts of pure water. The anti-rusting liquid is simple to prepare, free of special requirement on preparation fields, has no special requirement on environment temperature or humidity or special requirement on skill of preparation personnel, can be prepared once being needed, is simple to operate, low in production cost, convenient to use and low in cost, and thus the maintenance frequency of the tuning peg is reduced.

The invention discloses an anti-loosening piano tuning peg component. The component comprises a tuning peg, wherein the tail end of the tuning peg is of a multi-pedal type opening structure; and a dowel connected with the multi-pedal type opening structure in an inserting manner. After the tuning peg is inserted into a tuning peg hole in a tuning peg plate, the dowel is abutting with the bottom ofthe tuning peg hole; when the tuning peg continuously moves into the tuning peg hole, the dowel moves into a splicing hole, and a conical section of the dowel is matched with a conical surface of thesplicing hole, so that the dowel enables the multi-pedal type opening structure to expand outwards, the multi-pedal type opening structure on the dowel is tightly abutting with the inner wall of thetuning peg hole, and thus the tuning peg is fixed in the tuning peg hole, the intonation of a piano can be prevented from being affected by loosening of the tuning peg.

Disclosed in the invention is a manufacturing process of a piano tuning peg. Blanking of a raw material for manufacturing a tuning peg is carried out; a small circular head and a large circular head are processed by a lathe; roll finishing and centerless grinding are carried out on the shaft after lathe processing and then square smashing and centering are carried out on the shaft; hole drilling is carried out on shaft by a drilling machine and burrs are removed; electroplating is carried out on the shaft after hole drilling; and then lathe threading is carried out on the shaft. According to the invention, the square smashing head device is used and no solid particle or peeling phenomenon occurs after copper-nickle-chromium electroplating, so that the exposed square head is smooth and shiny; the threads are clear because the lathe threading is carried out after the electroplating and thus screwing to a pin block becomes firm without screw loosening.

The invention discloses a piano tuning auxiliary system and a tuning method. The piano tuning auxiliary system comprises a piano key collector arranged above piano keys and used for collecting displacement information of the piano keys; an audio player used for playing corresponding standard melodies of the piano keys; a controller which is used for receiving the piano key displacement information collected by the piano key collector and controlling the audio player to play or stop playing the standard melody and is respectively connected with the piano key collector and the audio player; and a storage unit which is used for storing the piano key information and the played standard melody in a matching manner and is connected with the controller. A piano string shaft pin is rotated through a tuning wrench to adjust the tension of a piano string, so that the melody of the piano string is approximately consistent with the standard melody of the corresponding piano key. The system and the method are high in tuning efficiency, good in tuning consistency and stability and simple and convenient in tuning mode, and reduce the labor intensity of tuning personnel.

The invention discloses a piano tuning peg capable of being accurately adjusted. The piano tuning peg is used for solving the problem that tuning peg tuning in the prior art is inaccurate and the tuning peg can only be adjusted by experience. The piano tuning peg structurally comprises a shaft rod, a force bearing slide block and a slide block, wherein the shaft rod is a hollow pipe, the slide block is located in the shaft rod, and the slide block is used for fixing one end of a string; the shaft rod is further provided with the force bearing slide block under the pulling force of string, thestring penetrate out of a string hole of the force bearing slide block instead of directly extending out of the slide block, a screw rod is further arranged in the shaft rod, the screw rod is connected with internal threads of the rod head part, and the position of the slide block in the screw rod is changed through rotation, and then the tightness state of the string is changed. The strings are installed in a mode that the strings are firstly fixed in the end pipes, then, sequentially pass through the movement grooves, the arc faces, the movable grooves, the string holes and the arc plates, and finally, extend out of the string holes, so that the strings are completed.

A high-frequency adhering technology for fixating the shape of the wooden ribs for the sound boards of piano features that a high-frequency press is used to conduct such steps as pressing by the uniformly arranged hydraulic heads, and heating and solidifying in HF electric field induction heating mode. The number and sizes of electrodes on hydraulic heads are matched with that of wooden ribs.

The invention discloses an auxiliary piano tuning system which comprises a microphone, a signal conditioning circuit, a microprocessor, a PC, a JPAG interface, an SRAM, press keys and an LCD screen. Through the microphone, sampling is performed to obtain digital signals; through the conditioning circuit, the signals are conditioned to an order of magnitude at which all signals can be normally processed; the digital signals are used as an input source of an audio filtering module; the digital signals are filtered through FFT; the filtered audio signals are compared with a standard audio signal;the tension of a piano string is regulated according to a measured difference value between the audio signals and the standard audio signal; and finally, the piano tuning work is completed. The auxiliary piano tuning system has the advantages that the use is convenient; the measurement is accurate; the display is clear; the labor is saved; and the efficiency is improved.

The invention discloses a piano tuning sound stopping leather strap, which comprises a piano body, a piano plate and strings are arranged on the piano body, the piano plate is in bolted connection with the piano body, the strings are in bolted connection with the piano body, the number of the strings is multiple, and a first sound stopping leather, a second sound stopping leather and a third sound stopping leather are respectively arranged among the strings, the first sound stopping leather, the second sound stopping leather and the third sound stopping leather are movably connected with the strings in an inserted mode, the second sound stopping leather is located on the left side of the first sound stopping leather, the third sound stopping leather is located on the right side of the first sound stopping leather, and the first sound stopping leather is in a wedge shape. According to the piano tuning sound stopping leather strap, through the cooperation of the second sound stopping leather and the third sound stopping leather, the first sound stopping leather plays a role in indicating the traditional sound stopping leather, the working efficiency of tuning is improved, the service life of tuning is prolonged, the use range is wider, the piano tuning sound stopping leather strap can be applied to tuning work of string arrays with different widths, the sound stopping effect is better, and the piano tuning sound stopping leather strap is suitable for popularization and use.

The invention discloses an automatic piano tuning method, which comprises the following steps of: acquiring a current sound frequency generated when a current key is pressed, and when the current sound frequency is inconsistent with a preset standard frequency of the current key, according to the current position of a tuning wrench and the position of a tuning peg pin corresponding to the current key, controlling a stepping motor to move the tuning wrench from the current position to the position of the tuning peg pin corresponding to the current key; automatically sleeving the tuning wrench into the tuning peg pin corresponding to the current key through a rotation probing method according to a preset rotation principle; subtracting a preset standard frequency of the current key from the current sound frequency to obtain a frequency difference value, and controlling the stepping motor to drive the tuning wrench to rotate according to the obtained rotation information according to the frequency difference value and a preset frequency difference value-rotation information corresponding relation until the current sound frequency is consistent with the preset standard frequency of the current key; and according to a preset safe exit principle, controlling the stepping motor to drive the tuning wrench to exit safely until tuning of all the keys is completed.

The invention is piano tuning apparatus. There is a trough on the case. The tuning hand wheel is connected to spindle of drive bevel gear. The tuner joint is inside case. The worm wheel is fixed on stepped shaft fixed by nut. The worm engage to the worm wheel is fixed inside case. The upper end of worm is connected to the driven bevel gear. The spindle of drive bevel gear across the hole on the upper cover is connected to the hand wheel. Comparing with prior art, the invention provides features of easy of operation, saving effort, high precision, suitable for professional soundman or as a tool for individual to use.

A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.