An apparatus, system, and method for a magnetically and releasably attachable trigger for an instrument is provided. The trigger and securing device are disposed on either side of a drumhead or other instrument surface via magnetic force, keeping the instrument surface intact and not deforming the instrument surface. Additionally, the trigger provides for an increased sensitivity of sound by being in direct physical contact with the surface on which it is attached.

An electromagnetic multi-function multi-purpose chordophone musical instrument upon which any form or style of music may be played in any position by a performer standing or seated, in a fixed location or moving throughout a performance venue. The player may initiating the vibrations of each string, any combination of strings, or all of the strings with a plectrum or the fingers of one or both hands, singly or in any combination and such vibrations will continue until their eventual natural termination unless damped and/or muted by the player using the fingers or the palm of one or both hands singly or in any combination. The shape and style of the rigid frame of the instrument is not limited by the need for frets, a fretboard, or keys.

A system for identifying a periodicity-related attribute in a multi-frequency signal. The system is configured to produce phase and delay modulated signals from a complex input signal. The system is designed to combine these phase and delay modulated signals to identify a periodicity-related attribute associated with the multi-frequency signal. The system is configured to produce a physically perceptible output based on the identified periodicity-related attribute.

A system for identifying a periodicity-related attribute in a multi-frequency signal. The system is configured to produce phase and delay modulated signals from a complex input signal. The system is designed to combine these phase and delay modulated signals to identify a periodicity-related attribute associated with the multi-frequency signal. The system is configured to produce a physically perceptible output based on the identified periodicity-related attribute.

An input musical sound signal is input to band pass filters, and pass musical sound signals for each sound pitch are acquired. Total level ratios based on a total of levels of a sound pitch lower than those of the pass musical sound signals are calculated from the levels that are levels of the pass musical sound signals, and output coefficients are acquired on the basis of the total level ratios. Levels of octave musical sound signals acquired by converting the pass musical sound signals into sound pitches lower than those of the pass musical sound signals by one octave are multiplied by the output coefficients. In accordance with this, the octave musical sound signals of a low sound pitch can be extracted from among the octave musical sound signals.

A CPU 41 acquires a string vibration signal in a case where a string picking operation is performed with respect to the stretched string 22, analyzes a frequency characteristic of the acquired string vibration signal, determines whether or not the analyzed frequency characteristic satisfies a predetermined condition, and changes a frequency characteristic of a musical sound generated in the connected sound source 45 depending on a case where it is determined that the predetermined condition is satisfied or determined that the predetermined condition is not satisfied.

A musical instrument switching system includes a) a control circuit controllable for combining and routing the analog audio, the control circuit comprising a plurality of instrument pickups for transmitting analog audio, and a controller connector for allowing connection of the control circuit to a computing device, and b) a software program, installable in the computing device, for modifying the characteristics of the musical instrument.

A system for identifying a periodicity-related attribute in a multi-frequency signal. The system is configured to produce phase and delay modulated signals from a complex input signal. The system is designed to combine these phase and delay modulated signals to identify a periodicity-related attribute associated with the multi-frequency signal. The system is configured to produce a physically perceptible output based on the identified periodicity-related attribute.

A sound acquisition device, particularly for acoustic guitars, comprising sound acquisition elements connected to output and power supply elements. The sound acquisition elements comprise at least one microphone and are associated with a clip-like body adapted to be coupled along the edge of the sound hole of a soundbox of an acoustic musical string instrument, the clip-like body being configured to support the sound acquisition elements inside the soundbox.

A musical instrument pickup, in particular for a plucked string instrument and/or a bowed string instrument. The pickup comprises at least one sensor which is designed to convert soundwaves detected by the sensor into electric signals. The pickup has a digital audio bus interface which is designed to transmit electric signals and supply an electric current to at least parts of the musical instrument pickup via a connection cable which can be releasably connected or captively connected to the digital audio bus interface and which only has two wires or at least two wires. The musical instrument pickup system can be equipped with the musical instrument pickup and can be used as an automotive audio bus for or as an audio bus interface of the pickup.