A reproduction control method, which is executed by a computer, includes determining, based on an image showing an object, whether a type of the object is a first type or a second type that is different from the first type, and reproducing a sound, triggered by a striking of an operation surface by the object, based on a result of the determining.

A reproduction control method, which is executed by a computer, includes detecting a first state in which an object is separated from an operation surface by a prescribed distance and a second state in which the object is in contact with the operation surface, initiating sound reproduction at a first time point at which the first state is detected, continuing the sound reproduction from the first time point to a third time point which is subsequent to a second time point at which the second state is detected, and controlling a change in a feature amount of a sound during a first time period from the first time point to the second time point.

A stringed instrument tuner that senses the vibration of all the strings of the instrument independently and simultaneously via ultraviolet reflective light sensors that are immune to interference from ambient alternating-current lighting. The pitches of the strings are then measured continuously in real-time and transmitted wirelessly to a receiver that simultaneously graphically displays how far out-of-tune all of the strings are so that the musician can instantly see which strings need tuning and tune them quickly. The receiver may be a smartphone, smartwatch, smart glasses, computer, self-tuning system, or a dedicated wearable receiver-display unit.

Systems and methods are disclosed for generating color sets based on musical concepts of pitch intervals and harmony. Color sets are derived via a music-to-hue process which analyzes musical pitch data associated with musical input to determine pitch intervals included in the music. Pitch interval angles associated with the pitch intervals are applied to a tuned hue index to identify hue note ordered within the index which are separated by a hue interval angle similar to the pitch angle associated with the analyzed pitch data. The systems and methods provide for the creation of color sets which are analogous to musical chords in that they include multiple hue notes selected based on hue interval angles derived from musical interval angles associated with the received musical input.

A method for tuning a managed pressure drilling system comprising a variable orifice choke to control fluid flow from a drilling well includes (a) characterizing change in flow rate through the choke with respect to choke opening at a substantially constant pressure drop; (b) characterizing change in fluid pressure in the well with respect to change in choke opening at a substantially constant flow rate into the well; (c) characterizing a response time of pressure in the well to changes in the choke opening, a delay time of pressure response after a change in choke opening and a back pressure applied to the well with respect to choke opening. The characterizations in at least one of (a) and (b), and the characterization in (c) are used as control parameters for a proportional integral differential controller having as output the choke opening and as input the fluid pressure in the well before the choke.

A percussion instrument, in particular electronic percussion instrument, includes at least one main attack element having at least one main attack surface and with a position detecting unit which is at least provided to detect an attack position of the main attack surface. The position detecting unit comprises at least two position detecting elements which are arranged decentrally with respect to the main attack surface, at least when the main attack surface is viewed perpendicularly.

Embodiments of the present disclosure relate to a sensory experience providing apparatus for providing a sensory experience based on sound in a vehicle, and a method thereof. The controller is configured to receive a sound played in the vehicle, extract a sound feature from the received sound, generate sensory information based on the extracted sound feature, and provide a sensory experience based on the sensory information.

There is provided an apparatus configured to control a plurality of light emitting elements so that the light emitting elements display a lighting behavior based on audio output which is based on an audio file. The apparatus can include a control portion and a choreography portion. The control portion is operable to generate an instruction sequence which can be used to control the lighting behavior of the light emitting elements, the instruction sequence can include a plurality of lighting instructions. The choreography portion is operable to associate at least one lighting instruction from the plurality of lighting instructions with at least one portion of the audio file.

Finger-tracking systems and methods for virtual instruments playback. The described system tracks the position of user's ten fingers on a projection surface and can be used to play virtual instruments such as virtual piano, drums, and bells. The system tracks the movement of user's ten fingers while keeping them free of encumbrance or excessive postural constraints. More specifically, in one or more embodiments, a coded light based projector is used to send out location signal onto a flat surface, and ten light sensors are mounted on user's fingers to receive these signals and locate user's fingers. Based on their locations and relative distance to a fixed point, a printed music instrument can be used for virtual instrument music playback. With the described tracking system, various embodiments of virtual music instruments may be implemented, including a system and method for virtual piano playing as well as virtual Chinese bell playing on printed keyboard and printed Chinese bell set.

An illumination device includes a signal reception unit capable of receiving an audio signal from outside, a musical piece extraction unit capable of extracting continuous consonant sounds in the audio signal as a musical piece, a performance state detection unit capable of detecting start/end of performance of the musical piece according to a result of extraction by the musical piece extraction unit, a first illumination lamp capable of radiating ultraviolet rays, a second illumination lamp capable of radiating white light, and an illumination control unit capable of controlling on/off of the first illumination lamp, and of controlling on/off and illuminance of the second illumination lamp, The first and the second illumination lamps are turned on in response to detection of the start of performance, and the first and the second illumination lamps are turned off in response to detection of the end of performance.