A generation system (100) of synthesized sound comprises: a first stage (1), wherein features (F) are extracted from an input raw sound and parameters of said features are evaluated; a second stage (2) wherein the evaluated parameters are used to create a plurality of physical models that are metrically evaluated in order to find the parameters of the best physical model, and a third stage (3) wherein the parameters of the best physical model are perturbed in order to create perturbed physical models and a metric evaluated of the perturbed physical models is performed to find the parameters of the best physical model.

A generation system (100) of synthesized sound comprises: a first stage (1), wherein features (F) are extracted from an input raw sound and parameters of said features are evaluated; a second stage (2) wherein the evaluated parameters are used to create a plurality of physical models that are metrically evaluated in order to find the parameters of the best physical model, and a third stage (3) wherein the parameters of the best physical model are perturbed in order to create perturbed physical models and a metric evaluated of the perturbed physical models is performed to find the parameters of the best physical model.

The present disclosure describes techniques for differentiable wavetable synthesizer. The techniques comprise extracting features from a dataset of sounds, wherein the features comprise at least timbre embedding; input the features to the first machine learning model, wherein the first machine learning model is configured to extract a set of N×L learnable parameters, N represents a number of wavetables, and L represents a wavetable length; outputting a plurality of wavetables, wherein each of plurality of wavetables comprises a waveform associated with a unique timbre, the plurality of wavetables form a dictionary, and the plurality of wavetables are portable to perform audio-related tasks.

A generation system (100) of synthesized sound comprises: a first stage (1), wherein features (F) are extracted from an input raw sound and parameters of said features are evaluated; a second stage (2) wherein the evaluated parameters are used to create a plurality of physical models that are metrically evaluated in order to find the parameters of the best physical model, and a third stage (3) wherein the parameters of the best physical model are perturbed in order to create perturbed physical models and a metric evaluated of the perturbed physical models is performed to find the parameters of the best physical model.

A generation system (100) of synthesized sound comprises: a first stage (1), wherein features (F) are extracted from an input raw sound and parameters of said features are evaluated; a second stage (2) wherein the evaluated parameters are used to create a plurality of physical models that are metrically evaluated in order to find the parameters of the best physical model, and a third stage (3) wherein the parameters of the best physical model are perturbed in order to create perturbed physical models and a metric evaluated of the perturbed physical models is performed to find the parameters of the best physical model.

An electronic musical instrument includes a playing operator, and a sound source which performs processing of receiving, in response to a user operation on the playing operator, a sound generation instruction according to playing operation information including the pitch information indicating the certain pitch and sound volume information indicating a certain volume, and generating sound according to the certain pitch and the certain volume, based on excitation data generated by multiplying partial data by a window function, the partial data being included in excitation signal waveform data generated based on a plurality of waveform data items which are respectively different from each other in sound intensity in the certain pitch.

An even-numbered harmonic adder adds a correction value to a first adjacent sample that is the next sample after a first local minimum sample, and subtracts a correction value from a second adjacent sample that is one sample before a local maximum sample. The even-numbered harmonic adder adds a correction value to a third adjacent sample that is the next sample after the local maximum sample, and subtracts a correction value from a fourth adjacent sample that is one sample before a second local minimum sample. An odd-numbered harmonic adder subtracts a correction value from the first local minimum sample and the second local minimum sample, and adds a correction value to the local maximum sample.

An electronic musical instrument includes a playing operator, and a sound source which performs processing of receiving, in response to a user operation on the playing operator, a sound generation instruction according to playing operation information including the pitch information indicating the certain pitch and sound volume information indicating a certain volume, and generating sound according to the certain pitch and the certain volume, based on excitation data generated by multiplying partial data by a window function, the partial data being included in excitation signal waveform data generated based on a plurality of waveform data items which are respectively different from each other in sound intensity in the certain pitch.

A signal processing apparatus has a first memory in which plural pieces of FIR coefficient data used for implementing an FIR filter algorithm are stored, a second memory which stores plural pieces of input data to be subjected to the FIR filter algorithm, and a processor implements the FIR filter algorithm using the plural pieces of FIR coefficient data stored in the first memory and the plural pieces of input data stored in the second memory as many times as the number corresponding to a designated filter order, in which filter algorithm each piece of coefficient data and each piece of input data are multiplied together and resultant products are summed up. The signal processing apparatus is provided, which can implement plural sorts of FIR filter algorithms of filter order which can be changed flexibly.

An electronic device is provided. The electronic device includes an image sensor configured to sense a motion of a bow to the string instrument, a vibration sensor configured to sense a vibration generated by the string instrument, and a control module configured to determine a fingering position of a user with respect to the string instrument using the motion of the bow and the vibration.