Method of generating actions following the rhythm of music includes the steps of (a) using an electronic device to classify the sound signals from plural musical instruments into a complex pitch range, (b) the electronic device selecting at least one pitch range according to the significance of the sound, and then performing Fourier series conversion on the sound signals of the selected said at least one pitch range to obtain at least one rhythm diagram. (c) the electronic device performing a rhythm change point capture action on the rhythm diagram, and then executing no action if the intensity in the rhythm diagram continues to increase with time, or regarding the point as a rhythm change point if the intensity changes from an increase to a decrease, and then transmitting an action signal to an action device, and (c) the action device executing the corresponding action according to the action signal.

An adjustment of an audio signal based on an orientation variation amount is carried out according to a surrounding audio condition. An audio signal processing device includes an audio signal analysis unit, an orientation variation analysis unit, and an audio signal adjustment unit. The audio signal analysis unit acquires an audio signal and sets a target value for an audio adjustment on the basis of the audio signal. The orientation variation analysis unit acquires orientation information and generates an orientation variation amount on the basis of the orientation information. The audio signal adjustment unit adjusts the audio signal toward the target value according to the orientation variation amount.

Music instrument and information digital mute system, for capture, processing, and conversion of sound from analog to digital signals using central processing unit (CPU) microcontroller, Bluetooth and Wi-Fi microcontrollers, sound image localization filter, global positioning and geographic information systems, universal serial bus (USB) module, and battery. Mute body is positioned in close proximity to bell or horn, body and/or voice at proximal end and/or configured to occlude sound source. Acoustically designed inner chamber within mute body captures acoustical variations of air pressure. Microphone positioned at distal end of mute, and proximal end of CB position in mute with digital signal processor (DSP) that captures, processes, converts, and transmits digital sound and data. CPU manages and controls components and modules of CB. Bluetooth and Wi-Fi microcontrollers configured to receive and send signals to and from other technological devices, components, and systems (cellphones, tablets, computers, earplugs, smart televisions, server, and cloud platforms). USB module configured to receive and send digital signals, supply power to CB, and charge and recharge battery.

The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of Δf. The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of FΔf; with F being a resolution factor, with F≥1; wherein the transposition order P is different from the resolution factor F.

A computer system for enabling generation/controlling/modification of sound elements is provided. A computer program defines a sound engine. The sound engine includes or is linked to one or more musical composition interfaces that enable one or more users to access a music generator/controller/modifier utility (“music generator”), so as to graphically map one or more musical notes by tracing one or more Bezier paths defined that are processable by the music generator so as to define five fundamental note qualities: Tone, pitch, volume, applied effects and duration. The music generator enables user manipulation of the Bezier paths, including touch input modification of the paths (e.g. dragging, forming etc.) that modify fundamental qualities of the corresponding note.

In one example, a method to match a digital amplifier model to a real guitar amplifier comprises obtaining an amplifier output filter and an amplifier input filter for the real guitar amplifier, using the amplifier output filter and a model output filter to obtain a corrective output filter, using the amplifier input filter and a model input filter to obtain a corrective input filter, and applying the corrective input filter and the corrective output filter to the digital amplifier model. The amplifier output filter and the amplifier input filter can be obtained using exponential sine sweep (ESS) and a matched filter. Other examples and related methods and apparatuses are also disclosed herein.

A musical sound that is rich in amusement can be provided. A musical sound control device includes: a plurality of operators; a musical sound processing part configured to repeat a process of controlling a musical sound in each of a plurality of steps in accordance with control information set by the plurality of operators; and a control part configured to stop an operation of the musical sound processing part in a case in which the process of controlling a musical sound of the plurality of all the steps using the musical sound processing part has gone through one cycle in a case in which a predetermined condition is satisfied.

The method for adapting a sound converter to a reference sound converter includes the sound converter having a first linear transfer function with a first frequency response, a second linear transfer function with a second frequency response, and a trivial nonlinearity. The sound converter has a non-linear transfer function corresponding to the frequency response from combination of the first linear transfer function, the trivial nonlinearity, and the second linear transfer function. A first frequency spectrum of the reference sound converter is determined at a low input level. A second frequency spectrum of the reference sound converter is determined at a high input level. The second determined frequency spectrum is used as the second frequency response in the second linear transfer function, and the division of the first frequency spectrum by the second frequency spectrum is used as the first frequency response in the first linear transfer function.

A method for processing audio signals includes extracting a fundamental frequency (F0) component from a first audio signal; processing the first audio signal with Dominant Melody Enhancement (DoME) based on a hearing profile and output a second audio signal; and providing the second audio signal to the user. The DoME enhances the F0 component. The enhancement weight of the DoME is corresponding to the hearing profile.

Preparing a sum of complex exponentials in the form of a modal filter to approximate a given impulse response is considered, and a non-iterative solution is described. In one embodiment, the mode count, and the mode frequencies, dampings, and amplitudes are estimated using the generalized eigenvalues of Hankel matrices of samples of the given impulse response.