A signal generator for a musical instrument includes a voltage-controlled oscillator (VCO) comprising a control voltage input and a VCO output. The control voltage input controls a frequency of the VCO output. A controller is configured to control the voltage-controlled oscillator by inputting a sequence of analog control voltages from a plurality of preloaded control voltage inputs.

Provided is an apparatus for providing an accompaniment based on a humming melody. The apparatus includes a user input receiver configured to receive a humming melody of a user, a melody extractor configured to measure a pitch from the received humming melody, a key extractor configured to extract a key from the humming melody, and a chord generator configured to generate a chord for each measure based on the humming melody.

A signal processing system, machine, and method of use to dynamically vary the power supplied to a signal processing circuit, imparting the processed output signal of the signal processing circuit with alterations substantially beyond the alterations typically produced by the signal processing circuit.

An electronic percussion instrument comprising a pair of drum assemblies of each of different tone. Each drum assembly is mounted on a housing and comprises a drum head having a sensor responsive to touch and/or pressure and an analog-to-digital converter to generate an electronic signal indicative of said touch and/or pressure. The electronic signal is transmitted to a processing unit which analyzes it and generates an output signal. The output signal is transmitted to a sound card which reproduces a sound representative of a drumbeat based on the output signal.

An electronic percussion instrument comprising a pair of drum assemblies of each of different tone. Each drum assembly is mounted on a housing and comprises a drum head having a sensor responsive to touch and/or pressure and an analog-to-digital converter to generate an electronic signal indicative of said touch and/or pressure. The electronic signal is transmitted to a processing unit which analyzes it and generates an output signal. The output signal is transmitted to a sound card which reproduces a sound representative of a drumbeat based on the output signal.

Described are apparatus for generating and/or processing audio signals. One apparatus includes: a first stage for obtaining an audio signal; a second stage for modifying the audio signal based on one or more control signals for shaping sound represented by the audio signal; a third stage for generating spatial metadata related to the modified audio signal, based at least in part on the one or more control signals; and an output stage for outputting the modified audio signal together with the generated spatial metadata. Also described are corresponding methods, as well as corresponding programs and computer-readable storage media.

In one embodiment, an electronic musical instrument (EMI) (or electronic multi-instrument) is described that separates pitch choice from percussive sound control (articulation). A pitch sensor interface (by which notes are selected) may comprise a software-programmed touchscreen interface (that can be modeled on existing musical instruments or entirely new) configured to allow pitch choice, while sound control may be made on a separate articulation control sensor (by which notes are triggered and modified), such as an illustrative double-sided touch pad, that senses one or more of a velocity, pressure, movement, and location of a user's contact. The design facilitates a portable, ergonomic, and intuitive way to express music via standard digital protocols (e.g., MIDI) through a physical interface that encourages fluid, non-static, personally distinguishable musical expression. Notably, the instrument may illustratively be a controller that requires a compatible synthesizer sound source (e.g., on-board or separate).

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.

The present disclosure relates to systems and methods that recognize audio queries and select related information to return in response to recognition of the audio queries. The technology disclosed facilitates easy designation of aggregate user experience categories and custom audio references to be recognized. It facilitates linking and returning of selected information in response to recognition of audio queries that match the designated aggregate user experience categories or custom audio references to be recognized.

A frequency-domain peak detector is configured to detect harmonic content of a digital input signal. An equalizer-based feedback synthesizer is configured to generate simulated feedback at a specified frequency by filtering existing content of the digital input signal at the specified frequency. A tone-based feedback synthesizer is configured to generate simulated feedback at the specified frequency by generating a tone at the specified frequency. Feedback selection logic is configured to determine the specified frequency at which to generate simulated feedback based on the harmonic content, and whether to utilize the equalizer-based feedback synthesizer or the tone-based feedback synthesizer to generate simulated feedback at the specified frequency.