A timing control method includes generating a timing designation signal according to one of a first generation mode for generating the timing designation signal which designates, based on a detection result of a first event in a performance of a music piece, a timing of a second event in the performance, and a second generation mode for generating the timing designation signal without using the detection result, and outputting a command signal for commanding an execution of the second event according to one of a first output mode for outputting the command signal in accordance with the timing designated by the timing designation signal, and a second output mode for outputting the command signal in accordance with a timing determined based on the music piece.

The present invention relates to a removable electronic device for emulating at least one sound of a drum-type percussion instrument, said device being intended to instrumentalise a striking element. A defining means defines a striking area on a tangible support. An allocating means allocates a drum element associated with a predetermined sound to the striking area, in a database. At least one sensor generates a stroke signal having at least one piece of stroke information on a stroke of a user with the striking element in the striking area. A computer processing means implements a processing algorithm configured to process the stroke signal to spatially locate said stroke in order to detect the area struck and to determine the drum element corresponding to this area struck. A generating means is configured to generate a sound signal comprising information on the sound virtually generated by said stroke of the striking element in said area struck.

Methods and digital circuits provide frequency correction to frequency synthesizers. Dual switched-capacitor voltage detectors connected to an input signal periodically sample the voltage of the input signal, and then determine a fundamental frequency of the input signal from the output of the dual switched-capacitor voltage detectors. The sample period of the dual switched-capacitor voltage detectors is proportional to a time period between a previous pair of voltage peaks detected in the input signal, thereby eliminating harmonic components in the original signal which might otherwise cause errors in frequency estimation without causing unwanted sluggishness in the transient response of the frequency detection process. The time period between the previous pair of detected voltage peaks is used to create a decay signal that initiates a capacitor decay time for each voltage detector. Two additional digital methods of extracting the fundamental frequency as well as an envelope of an analog audio signal are also described, one utilizing a sliding sample rate, and the other utilizing a fixed sample rate, for processing. These methods expand the array of techniques available for detecting the fundamental frequency of an arbitrary monophonic audio signal within one cycle making it possible to implement the disclosed methods on a much wider array of platforms, including but not limited to microcontrollers, digital signal processors (DSP), microprocessors, software running in desktop PCs, and software running in mobile applications.

Methods and digital circuits providing frequency correction to frequency synthesizers are disclosed. Dual switched-capacitor peak detectors connected to an input signal periodically sample the voltage of the input signal, and then determine a fundamental frequency of the input signal from the output of the dual switched-capacitor peak detectors. Both the sample period and the decay time of the dual switched-capacitor peak detectors are proportional to a time period between a previous pair of voltage peaks detected in the input signal. This makes the peak detectors immune to lower-amplitude oscillations which are often present within a single fundamental cycle in musical signals with strong harmonic components which might otherwise cause errors in frequency estimation. This is done without causing unwanted sluggishness in the transient response of the frequency detection process. The time period between the previous pair of detected voltage peaks is used to create a decay signal that initiates a capacitor decay time for each peak detector.

Synthesizing engine sound in a cabin of a vehicle includes generating a synthesized engine noise audio signal including a plurality of engine order outputs; mixing the engine order outputs in accordance with a first set of gain levels to provide a first channel output; mixing the engine order outputs in accordance with a second set of gain levels to provide a second channel output; using a first localization filter set to provide a first localized output to localize the first channel output as a first sound image at a first location within the cabin, and a second localization filter set to provide a second localized output to localize the second channel output as a second sound image at a second location within the cabin; and mixing the first and second localized outputs into loudspeaker outputs to be applied to the loudspeakers in the cabin.

[Technical problem] Circulatory sound regulation that changes environmental sound into input sound, converted sound with arbitrarily regulatory frequency component, arbitrarily regulatory amplitude or both of them, output sound, another input sound synthesized with this output sound and an environmental sound, and another converted sound made from this input sound. [Solution] Apparatus comprising: input means that receives environmental sound from arbitrary environment as an input sound; conversion means that converts the input sound into a converted sound that contains arbitrarily regulatory frequency component including frequency component that approximates to principle oscillator, arbitrarily regulatory amplitude or both; and output means that transmits the converted sound to environment as an output sound; whereby the input means receives synthetic sound synthesized with the output sound and environmental sound as an input sound again, and the conversion means converts this input sound further into another converted sound.

A sound generating analog synthesizer that is comprised of potentiometers, a switch or switches and a set of patch jacks has a control system that can be operated in three modes, a manual mode, an automatic mode, and a guided mode; wherein manual mode allows potentiometer and switch positions as well as patch cable connections to be set by hand; wherein automatic mode, automatically sets patch connections as on or off, as well as set potentiometer positions and switch states with electromechanical or electrical devices; and wherein the guided mode provides at least one visual information on how to change the potentiometer positions, switch states, and patch jack connections such that a previously obtained sound can be reproduced.

A sound synthesizer including an audio import system, a database, and a processor. The processor is configured to compile audio data into a cycle map to represent pitch as a series of variable lengths, and volume as a series of variable heights. The processor is further configured to compile the audio data into an arc map to represent audio data as a series of variable lengths, and volume as a series of variable heights.

This disclosure pertains to stimulation and monitoring devices for in utero cognitive stimulation of and interaction with developing fetuses by synthesizing sounds and sound patterns derived from movements of the fetuses' bodies and appendages. The exemplary stimulation and monitoring devices comprise arrays of sensors positionable above and/or the sides of the womb for detecting and recording movements of the fetus's body and appendages, one or more speakers, a microprocessor, controls, and optionally one or more light-emitting components. The collected movement data may be processed by a synthesizer for production of sound patterns and light patterns that are correlated with the movement data. The sound patterns and light patterns produced by the synthesizer may be transmitted through the speakers and the light-emitting components toward and into the womb to provide the development fetus with immediate cognitive stimulation in response to the movements of their body and appendages.

An electronic musical instrument including a musical instrument body which is supported by first finger of a hand of an instrument player and at least one finger other than the first finger, scale keys which are provided at positions that are contacted with fingers other than the first finger on one surface of the musical instrument body, and each of which specifies a scale of a musical sound, a touchpad which is provided in an area that is contacted with the first finger on an other surface of the musical instrument body, and includes a sensor that has a planar detection area for detecting a contact position of the first finger, and a processor which controls emission of the musical sound whose scale has been specified by the scale key in accordance with the contact position of the first finger detected by the touchpad.