A motor control system is provided for controlling a speed of a motor system used in a musical instrument. The motor control system includes at least one sensing device attached to the musical instrument, and configured for detecting movement of an object and providing a sensor signal based on the movement of the object. Also included in the motor control system is a control unit having a processor connected to the motor system and the at least one sensing device. The control unit is configured for selectively modulating the speed of the motor system based on the sensor signal.

A motor control system is provided for controlling a speed of a motor system used in a musical instrument. The motor control system includes at least one sensing device attached to the musical instrument, and configured for detecting movement of an object and providing a sensor signal based on the movement of the object. Also included in the motor control system is a control unit having a processor connected to the motor system and the at least one sensing device. The control unit is configured for selectively modulating the speed of the motor system based on the sensor signal.

An electric musical instrument includes a body having a front side and a rear side, a plurality of strings extending across at least a portion of the front side of the body, and at least one electric pickup to detect vibrations of the strings and generate a pickup signal. The instrument includes at least one speaker mounted at the rear side of the body, in which the speaker includes an acoustic driver and an acoustic deflector. The acoustic deflector is configured to receive acoustic energy propagating from the acoustic driver and deflect at least a portion of the acoustic energy. The instrument includes an amplifier to amplify the pickup signal to generate an amplified pickup signal, and drive the at least one speaker based on the amplified pickup signal.

The present disclosure is hands-free sound modulation apparatus. The hands-free sound modulation apparatus includes one more monophonic and polyphonic sound modulation assemblies for music creation, gaming, medical rehabilitation, language training, and speech enhancement. The hands-free sound modulation apparatus can be paired with a smartphone device, musical instrument, and a network of hands-free sound modulation apparatuses.

A diffuser which forms a first acoustic passage that sound waves propagate and which radiates the sound waves to an outer diameter direction between a diaphragm and an annular conical surface of a first reflection member, and forms a second acoustic passage the sound waves which pass the opening of the first reflection member propagate and which radiates the sound waves to an outer diameter direction between the annular concave surface of the first reflection member and a conical surface of a second reflection member.

An electric musical instrument includes a body having a front side and a rear side, a plurality of strings extending across at least a portion of the front side of the body, and at least one electric pickup to detect vibrations of the strings and generate a pickup signal. The instrument includes at least one speaker mounted at the rear side of the body, in which the speaker includes an acoustic driver and an acoustic deflector. The acoustic deflector is configured to receive acoustic energy propagating from the acoustic driver and deflect at least a portion of the acoustic energy. The instrument includes an amplifier to amplify the pickup signal to generate an amplified pickup signal, and drive the at least one speaker based on the amplified pickup signal.

The present disclosure is hands-free sound modulation apparatus. The hands-free sound modulation apparatus includes one more monophonic and polyphonic sound modulation assemblies for music creation, gaming, medical rehabilitation, language training, and speech enhancement. The hands-free sound modulation apparatus can be paired with a smartphone device, musical instrument, and a network of hands-free sound modulation apparatuses.

A speaker system includes one or more rotating speakers (or speakers with rotating reflectors) that are synchronized in absolute angular position to another rotating speaker or synchronized to audio effects to generated by a signal processing system driving a stationary or rotary speaker. Knowledge of absolute angular position in a multi-rotor speaker array or signal processing system allows for control of rotary position to accomplish acoustic effects otherwise not possible, such as matched-velocity profiles with differential phase control and motion profiles that are not based on simple rotation.

A speaker system includes one or more rotating speakers (or speakers with rotating reflectors) that are synchronized in absolute angular position to another rotating speaker or synchronized to audio effects to generated by a signal processing system driving a stationary or rotary speaker. Knowledge of absolute angular position in a multi-rotor speaker array or signal processing system allows for control of rotary position to accomplish acoustic effects otherwise not possible, such as matched-velocity profiles with differential phase control and motion profiles that are not based on simple rotation.

A motor control system is provided for controlling a speed of a motor system used in a musical instrument. The motor control system includes at least one sensing device attached to the musical instrument, and configured for detecting movement of an object and providing a sensor signal based on the movement of the object. Also included in the motor control system is a control unit having a processor connected to the motor system and the at least one sensing device. The control unit is configured for selectively modulating the speed of the motor system based on the sensor signal.