Abstract: The present invention relates to musical instrument tuners, more particularly to a tuner for providing tuning information regarding a musical instrument without making physical or electrical contact with the instrument. We describe a musical instrument tuner for providing tuning information for tuning a musical instrument, said musical instrument having a vibrating element, the tuner comprising: a light source for emitting light onto the said vibrating element; a light detector for detecting reflected light; an amplifier coupled to said light detector for amplifying a signal from said light detector; and tuning indication means coupled to said amplifier for providing tuning information responsive to said amplified signal.

Abstract: 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.

Abstract: Described are techniques for preventing movement of tuning pegs on a stringed instrument. Described is a device comprising an elongated body forming a sleeve opened at a first end thereof and having a slit formed therein. The body has a shape and dimensions in accordance with a shape and dimensions of a row of a plurality of tuning pegs of the stringed instrument so that the body is configured to enclose therein head portions of the plurality of tuning pegs. The slit is configured to have a length and width to extend around neck portions of the plurality of tuning pegs on the stringed instrument.

Abstract: A music device comprising a large acoustic frequency chamber, the chamber further comprising an elastic membrane placed on the acoustic chamber. It also comprises, at least one tightening ring and one tightening tuning device, where the tightening tuning device is anchored to a tightening ring and an elastic membrane. The device further comprises one small acoustic frequency chamber that contains another elastic membrane and a second tightening ring. Both chambers combine acoustic frequencies to produce a single combined acoustic frequency. The music tuning device is used both to clasp at least one drum skin and to mask unharmonic resonances.

Abstract: A self-contained tuning stabilizer for a stringed instrument consists of a body which is attachable to the stringed instrument like a capo, the stabilizer containing mechanical members for increasing or decreasing the tension on each of the strings to keep them in tune as the instrument is played. The device contains sensors for each string, an analyzer for determining if the frequency produced by each string is correct, and a driver for each of the mechanical members for applying micro-tuning corrections to the strings. The device must first be zeroed, and the instrument tuned by hand. Thereafter, the device will maintain the original tuning.

Abstract: A guitar transposer comprises a sound input connected to a microchip that receives the input from the sound input and modifies the input sound, a sound output that transmits the modified sound back to the guitar, a power supply is connected to the microchip and provides an electrical circuit. There is an on and off means connected to the microchip and the power supply, and the on-off switch completes and breaks the electrical circuit. A visual indicator connected to the microchip and the power supply displays a visual indication of the chord corresponding to the modified sound. A user activated chord selection means is connected to the microchip.

Abstract: A device is disclosed for adjusting the tension of the strings of a string instrument, especially a guitar, preferably an electric guitar, or a bass, preferably an electric bass, said strings being secured at a first end to a winding mechanism and at a second end to another mount, said device having at least one motor, a gear connected to the motor and flexible shafts connected to the gear for transmission of a rotational movement generated by the combination of the motor and the gear to the winding mechanism whereby the device has fewer motors than there are strings on the string instrument. With this device it is possible to arrange a drive for automatic adjustment of the tension of the strings of the string instrument in a space-saving manner and in the smallest possible amount of space.

Abstract: An electronic module has an enclosure which is mechanically and electrically compatible with a plurality of receiving devices such as amplifiers, computers, mixer consoles, and musical instruments. The module has a programmable control panel and display on the enclosure and an electronic circuit disposed within the enclosure and receiving user commands from the control panel and displaying configuration information on the display. The electronic circuit performs a variety of functions for each of the receiving devices by way of a digital signal processor, synthesizer for generating a programmable audio signal in response to a data stream, storage device for storing musical information in a digital format, and playback device for retrieval and playback of the stored musical information. An audio output is coupled for transferring the programmable audio signal to or from the receiving device.

Abstract: Provided is a tuning device including: a tuning device main body including an electric circuit for computing a tuning state of a musical instrument; a clip portion including a pair of plate materials for attaching the tuning device main body to the musical instrument; a joint member for joining the tuning device main body and the clip portion; and a vibration sensor for sensing a sound emitted from the musical instrument, the joint member including: a first pivot portion for making the clip portion free to pivot about an extension direction of the joint member; and a second pivot portion for making the tuning device main body free to pivot about a direction perpendicular to the extension direction. The vibration sensor is incorporated into the joint member, and is structured to be rotatable about the extension direction unitarily along with the tuning device main body.

Abstract: A display device for guitar tuners and a method of displaying the tuned states of guitar strings. The method is performed such that the control unit performs control so that the backlight emits light having a predetermined color by turning on the backlight when a tuner is turned on, and then performs control so that the backlight emits light having a different color when the tuning of guitar strings is completed using the display device, which includes a Liquid-Crystal Display (LCD) panel provided in an equalizer mounted to a guitar body, and configured to display the tuned states of the guitar strings, a backlight mounted behind the LCD panel, and a control unit configured to control the LCD panel and the backlight.

Abstract: Disclosed is an apparatus for adjusting a neck angle of a guitar. The apparatus comprises a support block having a receiving groove into which the neck is inserted. The support block is installed inside a lateral plate. A reinforcing plate is installed at bottom of the receiving groove of the support block. The reinforcing plate includes a central plate, a fixed plate fixed to a front face of the support block, and a guide plate guiding rotating of the neck. An adjustment device includes an adjustment bolt inserted into an adjustment hole and a thread portion formed in the adjustment hole of the central plate of the reinforcing plate so as to be thread-fastened with the adjustment bolt. A fixing device includes a fixing bolt inserted into a fixing hole and a fixing nut fixed inside the neck body and thread-fastened with the fixing bolt.

Abstract: A tuning device has a sound collecting unit having an input section for receiving a sound or vibration signal produced by a musical instrument and outputting a sound signal, and a wireless communication section for converting the sound signal into a wireless signal and transmitting the wireless signal to the outside. A computation display unit has a receiving section for receiving the wireless signal transmitted from the sound collecting unit and converting the wireless signal into a sound signal, a computing section that computes pitch information based on the sound signal, computes an amount of difference between the pitch information and reference pitch information corresponding to a reference sound name, and converts the computation result into a control signal for display, and a display section for acquiring the control signal and displaying information concerning the amount of difference computed by the computing section.

Abstract: A stringed instrument tuner that detects vibrations of the string being played via an integrated circuit and displays the nearest musical note value and the deviation of that strings pitch relative to an in-tune reference pitch This tuner has a clothes pin like design that allows it to be easily mounted on a stringed instrument, such as a guitar, by squeezing the top legs of the device and applying pressure to the coil mechanism to exert force on the lower jaws so that that they open up to allow clamping and securement onto the instrument. The electronics housing is built into one of the legs of the clothes pin tuner adjacent to where the user squeezes the clothes pin with their thumb.

Abstract: A musical instrument support strap is integrated with a tuning sensor having of a body configured at one end for attachment to the musical instrument. The body carries the pitch of a musical note struck on the musical instrument and is detected by a pickup. A printed circuit board converts the detected pitch for display on a liquid crystal display module, preferably having a needle indicator and a color indicator. The sensor may be provided independently for attachment to an existing strap. The method of using the strap for tuning a musical instrument includes attaching the musical instrument support strap to a musical instrument; striking a note on the musical instrument; reading the measurement of the frequency of vibration on the liquid crystal display module; and, adjusting the musical instrument to change the frequency of vibration.

Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.

Abstract: A method for keying human voice audio frequency includes the steps of setting the human factor of the singer; recording the singing of the singer; calculating the audio frequency by an audio frequency counter; recording the maximum ground frequency by the recorder; estimating a maximum fundamental audio frequency thereof by the diapason estimator; and converting the maximum fundamental audio frequency into musical terminology, the best audio frequency of the singer being determined. The method for keying human voice audio frequency is very easy and fast.

Abstract: A musical instrument includes a fretboard, frets aligned in a first direction on the fretboard, a number of strings, aligned in a second direction above the frets, and tensioning devices operable to hold the strings in tension such that the pitch of adjacent strings at any given fret differ by one whole tone. Signals from string vibration pickups may be electronically processed and amplified to modify the sound produced by the musical instrument.

Abstract: A music practice supporting appliance has an input unit that inputs a musical sound of a musical instrument and/or vocal music, converts the musical sound into an electric signal, and outputs the electric signal as an input signal. An amplifying unit amplifies the input signal outputted from the input unit. A processing unit processes the amplified input signal to obtain input signal data. A first memory unit stores the input signal data. A second memory unit stores input signal data stored in the first memory unit when the input signal data stored in the first memory unit exceeds a preselected storage capacity of the first memory unit.

Abstract: Provide a tuner mounting device which does not scratch an instrument and which provides a satisfactory sensitivity to a vibration generated from the instrument. A mounting base portion for fixing a tuner main body to a part of the instrument is fixed to the instrument on a constant basis by a hook-and-loop fastener, with a structure to be fitted into the mounting base portion being provided on a lower surface of a tuner main body containing a vibration sensor for detecting vibration generated through operation of the instrument. The mounting base portion has a power source portion and a power supply contact, with the structure having an electrical contact corresponding to the power supply contact provided on the mounting base portion.

Abstract: A stringed musical instrument employs springs to apply tension to corresponding musical strings. Each spring is chosen and configured for its ability to impart a string tension generally matched to the appropriate tension of the string at perfect tune. Preferably, the spring is selected and arranged so that the tension in the string maintains at or near perfect tune even as the string elongates or contracts over time. In one embodiment, once a string is placed in appropriate tune, a mechanical visual indicator is set. As such, if tune of the string changes due to string elongation or contraction, the change is reflected by misalignment of the mechanical visual indicator even if the change cannot be aurally detected. Perfect tune can be reestablished by realigning the indicator. In another embodiment, a force modulating member is interposed between a spring and its corresponding musical string.

Abstract: An automatic guitar tuning case is a tuning system to automatically, synchronously, accurately and rapidly turn a guitar. To automatically tune one string is not new, but automatically and synchronously tune an acoustic guitar or electrical guitar without modifying the guitar has never be done before. Changing one string's tension will cause all other strings' tension change, so all strings should be tuned synchronously and ended tuning together only when all strings are in tone at the same time. As a closed-loop control system, the automatic guitar tuning case comprises six transducers sensing the vibration frequency of six guitar strings respectively, six tuner units to analyze tones, and a center processor unit to control six electric tuning wrenches to tune the six guitar strings. The automatic guitar tuning case also consists of a control panel for a user to preset and select tuning patterns, control and monitor the system.

Abstract: An audio power meter includes a circuit for measuring the power of an amplified audio signal outputted by an audio power amplifier to which the audio power meter is connected. The circuit generates an output signal indicative of the power of the amplified audio signal. A first bar display includes a plurality of separately illuminatable segments arranged linearly with respect to one another. Each segment of the plurality of separately illuminatable segments is responsive to the output signal of the circuit and is selectively illuminated in response thereto. When the measured power of the amplified audio signal exceeds a selected threshold power level, the amplified audio signal is attenuated.

Abstract: A portable tuning device samples discrete values on a fundamental frequency component of an audio signal, which is equivalent to sound waves produced in a musical instrument, and extracts plural series of fundamental frequency components to be converted to plural bit strings of 1s and 0s; since a time delay equal to the inverse of target frequency is introduced between the first bit of one bit string and the first bit of the next bit string, a series of gradation data has a bit string identical with the bit strings at the consistency with the target frequency, and the series of gradation data has bit strings different from the bit strings at the inconsistency regardless of a cycle time so that user recognizes the tuning state from the bit strings.

Abstract: The invention relates to a protective tuner cover for the tuning section of a stringed musical instrument, such as a guitar. The tuner cover is sized to enclose the instrument headstock, or a substantial portion thereof, and includes a section that encloses and protects the tuning keys and knobs of the musical instrument. When constructed as a unitary structure, the tuner cover can be slid onto the instrument headstock. When constructed from separable components, the tuning cover can be opened and closed over the headstock in a bivalve manner if hinged, or by appropriately spaced latching mechanisms if completely separable. The tuner cover can be constructed to enclose and protect one or two rows of tuning keys and knobs, depending on the type of musical instrument.

Abstract: An electronic musical instrument includes a tuning device, a keyboard, a tone generator, a microphone, a measurement unit, and a display attached to the backside of the housing. The tone generator generates a plurality of reference tones in response to the operation of the keyboard, while the microphone receives a plurality of musical tones, which are generated by at least one musical instrument subjected to tuning. Different tone colors can be applied to the reference tones. The measurement unit measures a plurality of pitch differences between the reference tones and the musical tones subjected to tuning, so that the display displays the pitch differences in comparison with each other.

Abstract: A D-Tuner for mounting on the peghead of a banjo. The D-Tuner has keyed cam pegs, adjustable stops for limiting the extent of rotation of the cam pegs, and linear flexible members attached to the cam pegs. The flexible members are suitable for attachment to the second B string and third G string of a banjo for tuning the banjo when the keyed cam pegs are turned.

Abstract: A tuning device includes an analog-to-digital converter for converting sound waves propagated from a piano to an audio signal in synchronism with a sampling signal and a data processor for visualizing a difference between a target pitch of a tone and an actual pitch of the tone; since the sampling signal is less accurate in frequency, the data processor previously determines the frequency difference between a design frequency and an actual frequency of the sampling signal by using a calendar clock signal as a measure; the data processor eliminates noise due to the sampling signal from visual images of the pitch difference, and makes the visual images more accurate.

Abstract: A portable tuning device includes a microphone, a data processing system and a touch-panel liquid crystal display device, and assists a user in a tuning work on an upright piano; when the user depresses a key, sound waves, which expresses a tone, are propagated to the microphone, and are converted to an audio signal, the waveform of which is converted to audio data codes; the data processing system firstly calculates an introductory autocorrelation on the audio data codes for a small number of delayed waveform so as to determine a register to which the tone belongs, and, thereafter, calculates a principal autocorrelation on the audio data codes for delayed waveforms within the register so as to estimate the pitch of the tone; since the compass is narrowed to the register through the introductory autocorrelation, the amount of calculation is relatively small in the principal autocorrelation.

Abstract: A method and apparatus for shifting pitches of audio signals to achieve desired pitch relationships between the audio signals. Two or more audio signals are received. The audio signals may be in either a digital or analog format. One of the input audio signals is selected to be a reference signal. For each of the other audio signals, the pitch of the other audio signal is compared with the pitch of the reference signal to determine a relative pitch relationship. For each of the other signals, an adjustment is determined to bring the relationship to a desired pitch relationship. Based on the adjustment, the pitch of at least one of the audio signals is adjusted to achieve the desired pitch relationship between the audio signals.

Abstract: The present invention relates an instrument tuner possessing a fiber optic with a prewritten fiber Bragg grating. The tuner is suitable for providing more accurate instrument tuning, capable of not being subject to a tuner's subjectivity or distortions or electromagnetic interference.

Abstract: An intonation training device for training musicians in just intonation. As disclosed, the device is a pocket-sized portable device with an audio output and a user interface which includes an LCD display and a device such as a push button for selecting an item from a menu. When the device is turned on, the LCD display indicates a key and the device emits a sustained pure chord in the key. The user can use the menu item selection device to select another key and the training device then continuously emits the chord in the just scale for that key. The selected key appears in the LCD display. Implementations disclosed include an implementation that employs stored samples of the chords, an implementation in which the chords are generated from waveforms, and an implementation in a portable pocket-sized multimedia asset player.

Abstract: A method and apparatus for detecting a pitch using frequency analysis are provided. An externally input digital signal is analyzed into frequency component values at predetermined time intervals, and positions of peaks of the digital signal are detected based on the frequency component values. It is determined whether a frequency at a maximum peak position among the peak positions is a pitch or a n-order harmonic frequency of the pitch to detect a pitch. Then, the range of the pitch is determined based on the range of a harmonic frequency of the detected pitch. Accordingly, an error range for the pitch detected using frequency analysis is minimized, thereby more exactly detecting a pitch when the pitch is detected using the frequency analysis.

Abstract: This invention relates to a musical instrument case with a built-in tuner. The tuner gives a musician the ability to tune their instrument quickly without the need to carry a separate tuner or look for their tuner elsewhere.

Abstract: The invention relates to a protective tuner cover for the tuning section of a stringed musical instrument, such as a guitar. The tuner cover is sized to enclose the instrument headstock, or a substantial portion thereof, and includes a section that encloses and protects the tuning keys and knobs of the musical instrument. When constructed as a unitary structure, the tuner cover can be slid onto the instrument headstock. When constructed from separable components, the tuning cover can be opened and closed over the headstock in a bivalve manner if hinged, or by appropriately spaced latching mechanisms if completely separable. The tuner cover can be constructed to enclose and protect one or two rows of tuning keys and knobs, depending on the type of musical instrument.

Abstract: A device is disclosed for tuning at least one string of a string instrument, preferably a guitar, in particular an electric guitar or a bass, in particular an electric bass, comprising a detection device for detecting a note generated by striking a string and for output of a signal corresponding to the note detected, a memory device for storing preselected signals, corresponding to a desired note, a comparator device for comparing the signal output by the detection device with a signal corresponding to the desired note and stored in the memory device, an adjusting device for varying the tension of at least one of the strings, at least one drive for driving the adjusting device, a controller connected to the comparator device and controlling the at least one drive via a control line on the basis of a deviation found in the comparator device between the signals representing the note thereby generated and signals representing the desired note.

Abstract: An automatic tuning system for a stringed instrument is provided having a string adjustment assembly comprising a motor and gear assembly, wherein the motor and gear assembly is pivotable on a housing for the tuning system. The system can also include a vibrato arm in contact with the motor and gear assembly, and a vibrato return spring in contact with both the motor and gear assembly and the instrument, which is capable of reversibly changing the position of a string contact surface in the string adjustment assembly with respect to the string, thereby lowering the pitch of the string and then raising it to its original pitch. The system can also include an option board for wireless communication with remote components such as a remote footswitch or other type of control panel. Other remote devices may also be wirelessly connected to the tuning system, including other instruments, audio devices for receiving sound, and the like.

Abstract: Disclosed is a musical accessory, equipped with a tuner for stringed instruments and/or a metronome, capable of generating power by itself, which is convenient to use. In an aspect, the musical accessory comprises a casing housing a sensor, an amplifier, an A/D converter, an indication unit, a microprocessor, and a power supply unit, wherein the power supply unit includes a driver pivotably installed on one side of the casing, a power generation module for generating electromotive force by receiving rotary power from the driver, and a charger connected to the power generation module and storing some amount of the electromotive force, wherein the musical accessory is operated by receiving power from the charger.

Abstract: The present disclosure relates to musical instruments and devices. A system is provided which utilizes tonal visualization components incorporating color and/or shape to allow a person to “see” a note or group of notes sounded by an instrument to determine whether the instrument is in tune and make appropriate adjustments if necessary.

Abstract: A tuning device includes a pitch extraction device with which the pitch of an input signal is extracted and a deviation detection device with which the deviation of the pitch that has been extracted by the pitch extraction device from a standard pitch is detected. The deviation that has been detected by the deviation detection device is displayed by an indicator of a mechanical meter. The tuning device also includes an ultrasonic motor that drives the indicator. A controller drives the ultrasonic motor in conformance with the deviation that has been detected by the deviation detection device.

Abstract: A music tuner comprising a contact sensing device, a non-contact sensing device, or a combination of both, is integrated onto the body of an electric stringed music instrument. The present invention aims to make it more convenient for the user of the electric ukulele by eliminating the need to separately account for the music tuner and by preventing the music tuner from being misplaced or lost.

Abstract: The present invention relates an instrument tuner possessing a fiber optic with a prewritten fiber Bragg grating. The tuner is suitable for providing more accurate instrument tuning, capable of not being subject to a tuner's subjectivity or distortions or electromagnetic interference.

Abstract: The present invention relates to musical instrument tuners, more particularly to a tuner for providing tuning information regarding a musical instrument without making physical or electrical contact with the instrument. We describe a musical instrument tuner for providing tuning information for tuning a musical instrument, said musical instrument having a vibrating element, the tuner comprising: a light source for emitting light onto the said vibrating element; a light detector for detecting reflected light; an amplifier coupled to said light detector for amplifying a signal from said light detector; and tuning indication means coupled to said amplifier for providing tuning information responsive to said amplified signal.

Abstract: A universal mount for acoustically coupling a musical instrument tuner to an instrument has a link connected to the tuner at one end, the link adapted and arranged to have selectable loose and fixed states, with the link including complementary first and second clamping halves joined by a compression element, and a clamp connected to the other end of the link for acoustically coupling the tuner to the musical instrument.

Abstract: I, D. Loran Curet Troche, invented a new musical instrument named ACOUSTICONGA. This instrument includes a membranophone, a chordophone, an aerophone, and an idiophone, four of the original Sachs-Hornbostel musical instrument classifications. The ELECTROCONGA is the electric version of the ACOUSTICONGA. I propose to introduce a new MECHANICAL VOICE SYSTEM (MVS) into hollow drum shells such as the conga drum which incorporates strings within a hollow drum shell. This MECHANICAL VOICE SYSTEM allows the percussion instrument to produce specific musical notes as typically produced by other string instruments such as the acoustic stand-up bass. Another embodiment of this invention is what I call the SPRING HOUSE, a shock absorption system, which serves to minimize repetitive impact, among other functions. The ACOUSTICONGA also has a MECHANICAL TUNING SYSTEM (MTS) around the drumhead which allows for more accurate and easy tuning of the drumhead as well as the strings.

Abstract: A tuner apparatus 10 causes a user to designate a musical instrument that is to be tuned and a reference pitch that is a standard upon tuning, by a process at a setting portion 110. A pitch detecting portion 130 detects a pitch of a performed note inputted via a microphone 20 and input portion 120. A target note specifying portion 140 defines a note name, which is positioned nearest to the performed note in a predetermined temperament (e.g., 12-note equal temperament), as a target note based upon the detected pitch of the performed note and the inputted reference pitch. Then, a calculating portion 150 calculates a difference between the pitch of the performed note and the pitch of the target note, and a display control portion 160 causes the display device 30 to display the calculated difference.

Abstract: An intonation training device for training musicians in just intonation. As disclosed, the device is a pocket-sized portable device with an audio output and a user interface which includes an LCD display and a device such as a push button for selecting an item from a menu. When the device is turned on, the LCD display indicates a key and the device emits a sustained pure chord in the key. In a preferred embodiment, the pure chord is a perfect fifth in the just scale for the key. To train his or her intonation, the user then plays a sequence of notes in the key, adjusting his or her intonation while playing to eliminate beats between the note being played and the chord being emitted by the training device. In other embodiments, the device may emit a third in the just scale for the key. The user can use the menu item selection device to select another key and the training device then continuously emits the chord in the just scale for that key. The selected key appears in the LCD display.

Abstract: An apparatus and method is disclosed for storing, editing, deleting and visually displaying personal information within a stringed musical instrument. A hand-held type computer (34) located in and forming a portion of the envelope or housing of the stringed musical instrument displays personal information to a user from a display screen (44). For example, a user can store, retrieve, edit and delete information such as complete song tablature, contact names, phone numbers, play lists for performance, schedules of shows etc. from within the instrument.

Abstract: A tuning device includes an input terminal configured to receive an input electrical signal and a pitch detector to detect a pitch of the input electrical signal. A manual pitch designator designates a standard pitch from pitches of a scale. An automatic pitch designator designates a standard pitch from a scale that is closest to the pitch of the input electrical signal. A mode selector selects either a manual mode where the standard pitch is designated by the manual pitch designator, or an auto mode where the standard pitch is designated by the automatic pitch designator. A pitch comparator compares the pitch of the input electrical signal and the standard pitch and a display device displays the results of the comparison. The display device is configured such that when the standard pitch is designated by the automatic pitch designator, the standard pitch is not displayed.

Abstract: System and method for musical instrument education are provided. The system includes a lesson terminal which has a processor unit configured to evaluate performance musical data inputted from an electronic musical instrument, to enable a user feedback, and to enable determining new music training materials for a next lesson. The lesson terminal also has a data-receiving unit for receiving music training materials from an external music data source. The data-receiving unit may be a network connection port, such as an Internet connection port, for connecting to a server, or a local receiving port for connecting to a removable data storage. An electronic musical instrument and a method for evaluating performance musical data are also provided.

Abstract: The tuning device also includes an input unit for inputting a sound of an instrument to be tuned or a musical sound signal, a conversion information storing portion in which a plurality of pieces of information on filters for tuning are stored, a control unit for extracting the piece of information on an arbitrary one of the filters from the conversion information storing portion, and a conversion unit for converting a signal of the input unit into a signal of an arbitrary frequency band in response to a signal from the control unit. Owing to this structure, even if ambient noise has mixed with a sound of the instrument to be tuned, the sound is filtered into a signal component of a target scale or a target pitch name. By extracting a pitch from this signal component, the number of erroneous tuning operations can be reduced.