One embodiment of the present application sets forth a method for simulating an audio output of a three-dimensional object that includes a resonant cavity. The method includes receiving an input mesh of a three-dimensional shape and a hole configuration. The input mesh has an outer surface and an internal cavity, and the hole configuration includes one or more holes. The method further includes adding the one or more holes to the three-dimensional shape based on the hole configuration to generate a modified three-dimensional shape having a resonant cavity. The resonant cavity includes the one or more holes and the internal cavity. The method further includes determining an air pressure coefficient matrix for the resonant cavity. The method further includes computing a minimum non-zero eigenvalue for the air pressure coefficient matrix. The method further includes determining an output resonant frequency for the resonant cavity based on the minimum non-zero eigenvalue.

Provided is a device for reporting a tuning status by sound on the basis of an audio signal acquired. The device includes: a signal acquisition means for acquiring the audio signal; a comparison means for comparing the frequency of the audio signal with a reference frequency corresponding to the audio signal; and a generation means for generating a first sound signal when the frequency of the audio signal is lower than the reference frequency and generating a second sound signal different from the first sound signal when the frequency of the audio signal is higher than the reference frequency.

Provided is a device for reporting a tuning status by sound on the basis of an audio signal acquired. The device includes: a signal acquisition means for acquiring the audio signal; a comparison means for comparing the frequency of the audio signal with a reference frequency corresponding to the audio signal; and a generation means for generating a first sound signal when the frequency of the audio signal is lower than the reference frequency and generating a second sound signal different from the first sound signal when the frequency of the audio signal is higher than the reference frequency.

A stringed instrument tuner that senses the vibration of all the strings of the instrument independently and simultaneously via ultraviolet reflective light sensors that are immune to interference from ambient alternating-current lighting. The pitches of the strings are then measured continuously in real-time and transmitted wirelessly to a receiver that simultaneously graphically displays how far out-of-tune all of the strings are so that the musician can instantly see which strings need tuning and tune them quickly. The receiver may be a smartphone, smartwatch, smart glasses, computer, self-tuning system, or a dedicated wearable receiver-display unit.

Methods, systems, and computer program products for network-based processing and distribution of multimedia content of a live performance are disclosed. In some implementations, recording devices can be configured to record a multimedia event (e.g., a musical performance). The recording devices can provide the recordings to a server while the event is ongoing. The server automatically synchronizes, mixes and masters the recordings. The server performs the automatic mixing and mastering using reference audio data previously captured during a rehearsal. The server streams the mastered recording to multiple end users through the Internet or other public or private network. The streaming can be live streaming.

Methods, systems, and computer program products for network-based processing and distribution of multimedia content of a live performance are disclosed. In some implementations, recording devices can be configured to record a multimedia event (e.g., a musical performance). The recording devices can provide the recordings to a server while the event is ongoing. The server automatically synchronizes, mixes and masters the recordings. The server performs the automatic mixing and mastering using reference audio data previously captured during a rehearsal. The server streams the mastered recording to multiple end users through the Internet or other public or private network. The streaming can be live streaming.

A sound production control apparatus has a position detector that detects, in accordance with a playing operation of a musical instrument, a position of a key displaceable within a movement range from a start position to an end position. The movement range includes a sounding range including a sounding position and a setting range that is closer to the start position than the sounding range. The apparatus causes a played sound associated with the key to be produced upon the detected position of the key reaching the sounding position, while controlling a characteristic of the played sound depending on a displacement characteristic of the key within the setting range before the key is positioned in the sounding range.

A sound production control apparatus has a position detector that detects, in accordance with a playing operation of a musical instrument, a position of a key displaceable within a movement range from a start position to an end position. The movement range includes a sounding range including a sounding position and a setting range that is closer to the start position than the sounding range. The apparatus causes a played sound associated with the key to be produced upon the detected position of the key reaching the sounding position, while controlling a characteristic of the played sound depending on a displacement characteristic of the key within the setting range before the key is positioned in the sounding range.

A multi-stringed musical instrument, such as a guitar, having a neck with a partially hollow interior containing a number of linear actuators, each connected to a fret which projects proud of the neck and is in contact with a taught string, wherein the linear actuators are controlled by means of a user-selected input signal via functional communication with a small control panel, tablet, smartphone, computer or laptop.

A multi-stringed musical instrument, such as a guitar, having a neck with a partially hollow interior containing a number of linear actuators, each connected to a fret which projects proud of the neck and is in contact with a taught string, wherein the linear actuators are controlled by means of a user-selected input signal via functional communication with a small control panel, tablet, smartphone, computer or laptop.