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 audio device simulation method includes acquiring a standard model that models input-output characteristics of an audio device, and setting at least one parameter of a target audio device of the same type as the audio device and measuring input-output characteristics of the target audio device, and generating an individual model that models input-output characteristics of the target audio device by correcting the standard model using measured input-output characteristics that have been measured.

Various methods for representing audio suitable for use in variational audio encoding are disclosed. A method comprises maintaining, by a computing system, state information for multiple resonator models with different resonant frequencies. The method further comprises iteratively performing a number of different operations, by the computing system for multiple respective samples in a set of audio samples in the time domain. These operations include updating the state information for the multiple resonator models based on the sample amplitude. The operations also include determining respective resonator amplitudes and phases for the updated multiple resonator models and storing, respective resonator amplitude and change-in-phase information for the sample.

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 keyboard musical instrument includes a sound source configured to, in response to detection of key-pressing of the first key in damper-off detection, input first excitation signal data corresponding to the first key to a first channel, input first channel output data which is output from the first channel to each of low-register channels corresponding to the respective low-register keys, and output musical sound data which is generated based on respective pieces of low-register channel output data which is output from the respective low-register channels and the first channel output data, as musical sound data corresponding to the first key.

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.

A system for modifying an audio signal comprises a computer including a first digital signal processor (DSP). The first DSP includes a first module and a second module. The first module is coupled to the interface to provide a musical instrument with a set of testing input signals and obtain a set of testing output signals from the musical instrument via the interface. The second module is configured to perform functions including: analyzing the set of testing output signals to obtain a set of parameters, constructing an acoustic transducer to model characteristics of the musical instrument based on the set of parameters, and receiving the audio signal to modify the audio signal using the acoustic transducer, wherein the first DSP module obtains the set of parameters at least by identifying occurrences when an output level state determined at least based on the set of testing output signals significantly changes.

A method includes measuring an environmental parameter that indicates a sensory condition at a location of an electronic device within a physical environment. The method includes determining whether the environmental parameter is within an acceptable range. The method includes, in response to determining that the environmental parameter is not within the acceptable range, triggering presentation of augmented content in order to enhance the sensory condition at the location of the electronic device.

A method includes displaying, on a display, virtual acoustic instruments as being overlaid onto a pass-through of a physical environment. The method includes performing, based on respective characteristics of the virtual acoustic instruments, an acoustic simulation in order to generate estimated acoustic parameters for respective locations within the physical environment. The method includes displaying, on the display, an indication of the estimated acoustic parameters.

A system for modifying an audio signal comprises a computer including a first digital signal processor (DSP). The first DSP includes a first module and a second module. The first module is coupled to the interface to provide a musical instrument with a set of testing input signals and obtain a set of testing output signals from the musical instrument via the interface. The second module is configured to perform functions including: analyzing the set of testing output signals to obtain a set of parameters, constructing an acoustic transducer to model characteristics of the musical instrument based on the set of parameters, and receiving the audio signal to modify the audio signal using the acoustic transducer, wherein the first DSP module obtains the set of parameters at least by identifying occurrences when an output level state determined at least based on the set of testing output signals significantly changes.