43 results about "Piano tuning" patented technology

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.

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.

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 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 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.

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.

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.