A signal processing device includes a first memory storing waveform data; a second memory to which the waveform data is being transferred; and a processor configured to execute a first program that imparts a sound effect to samples of the waveform data that have been transferred to the second memory, and a second program that performs burst access to a plurality of samples of the waveform data stored in the first memory so as to transfer the plurality of samples of the waveform data to the second memory, wherein the processor determines an execution schedule of the second program such that a process execution of the first program and a process execution of the second program are respectively completed once in every sampling period of the waveform data.

The present disclosure is directed to multi-source switched sequence oscillator waveform compositing system that allows for real-time modulation of a specific fraction of the cycle period within the output waveform, resulting in a greater and more dynamic number of waveform variations than simple assembly of various shapes.

An instant-on nothing-to-download soundscaping device that provides natural, atonal sounds such as the rolling surf of the ocean, running streams, gurgling brooks, rain, thunder, wind, crowd sounds, et al is provided.

An electronic musical instrument includes a first memory storing a plurality of waveform data; and a second memory having a plurality of waveform buffer regions that respectively function as ring buffers, wherein one of a processor or a sound source executes the following: setting a plurality of threshold margin values respectively for the plurality of waveform buffer regions, at least some of the threshold margin values are different from each other; identifying, at a prescribed timing, among the plurality of waveform buffer regions, a waveform buffer region in which a waveform read margin calculated for said waveform buffer region reaches the threshold margin value set and assigned to said waveform buffer region; and stopping a sound that has been generated from the waveform data read from the waveform buffer region that is identified by the identified process.

A conversion-to-note apparatus includes: a key which is operated by a user; and a processor. The processor obtains, from a memory, first information and second information. The first information is information to associate a key operation on the key with an open/close state of a tone hole or virtual tone hole. The second information is information to associate the open/close state of the tone hole or virtual tone hole with a note. Further, the processor identifies, based on the first information, the open/close state of the tone hole or virtual tone hole for the key operation detected. Further, the processor determines, based on the second information, the note for the identified open/close state of the tone hole or virtual tone hole.

An electronic musical instrument includes a first memory storing a plurality of waveform data; and a second memory having a plurality of waveform buffer regions that respectively function as ring buffers, wherein one of a processor or a sound source executes the following: setting a plurality of threshold margin values respectively for the plurality of waveform buffer regions, at least some of the threshold margin values are different from each other; identifying, at a prescribed timing, among the plurality of waveform buffer regions, a waveform buffer region in which a waveform read margin calculated for said waveform buffer region reaches the threshold margin value set and assigned to said waveform buffer region; and stopping a sound that has been generated from the waveform data read from the waveform buffer region that is identified by the identified process.

Methods and apparatuses according the present embodiments derive the sound of a Hammond tonewheel organ from the equal-tempered tuning of its tonewheels and drawbar registration design, as well as its vibrato/chorus processing and pickup distortion. In embodiments, as a reverberation effect, the modal processor simulates a room response as the sum of resonant filter responses, providing precise, independent and interactive control over the frequency, damping, and complex amplitude of each mode. As an effects processor, the modal processor provides pitch shifting and distortion by simple manipulations of the mode output sinusoids.

When transferring waveform data from a waveform region in a high-capacity flash memory to a waveform buffer in a RAM, first, whether a non-ring buffer region that can receive the waveform data can be allocated in the RAM is determined, and if so, the waveform data is transferred to the allocated non-ring buffer region. If such a non-ring buffer region cannot be allocated, then whether a ring buffer region that can receive the waveform data can be allocated in the RAM is determined, and if so, the waveform data is transferred to the ring-buffer region in a ring buffer operational manner.

A musical instrument system includes a sound element medium including a plurality of sound-element information areas each having sound element information on a sound element, a reader configured to read the sound element information, a generator configured to generate musical sound information based on the read sound element information, and an audio unit configured to produce a sound based on the generated musical sound information, each of the sound-element information areas having a display corresponding to the sound element information, and the sound element information relating to both or one of pitch and tone.

A sound processing method includes: generating with a trained generative model, for each of a plurality of time points including a first time point, a first acoustic feature amount of a target sound to be generated, by sequentially processing input data including condition data representing conditions of the target sound; generating, for each of the plurality of time points, a time-domain waveform signal representing a waveform of the target sound based on the first acoustic feature amount; and generating, for each of the plurality of time points, a second acoustic feature amount based on the time-domain waveform signal. The input data at the first time point includes the second acoustic feature amount generated before the first time point.