MUSICAL ELECTRO-ACOUSTIC APPARATUS Russian patent published in 2020 - IPC G10H3/00 

FIELD: physics.

SUBSTANCE: device for musical electroacoustic apparatus can be conditionally divided into 2 modules. Module 1 comprises housing 1 with control holes 2, electrodynamic head 3, sound signal amplifier 4, radio receiver 5 and storage battery 6. Module 2 includes microphone - 7, microphone signal amplifier - 8, instrument for correction of timbre characteristics (equalizer) - 9, device for limiting amplitude signal - 10, radio transmitter - 11. Radio receiver and the radio transmitter for transmitting data can be a receiver and a Bluetooth™ transmitter or any other wireless data transmission method. For additional possibilities of musical expression, it is possible to include devices for creating sound effects (echo, reverberation, phaser, chorus, modulation, and so forth) in the loop of the AOC loops between units 10 and 11. Module 2 in the device can be a mobile device, which is supplemented with functionality of a pocket personal computer with software of a digital audio workstation with the possibility of sound recording using the built-in microphone, as well as storage, editing and reproduction of digital sound. Device operates as follows. When housing 1 of the apparatus is moved close to microphone 7, a sound is generated, which is caused by the loop of the positive feedback loop. Sound in the microphone is converted to an electrical signal and, after passing the microphone signal amplifier 8, falls into equalizer 9. Equalizer makes it possible to selectively correct signal amplitude depending on frequency characteristics (pitch, sound timbre). It allows to adjust the device individually taking into account the features of the execution environment. Further, the signal is transmitted to the signal amplitude limiting device 10, where the sine tips of the audio signal are cut by smooth rounding, which leads to distortion of the output signal in proportion to the level of the input signal. Thus, it is possible to emphasize dynamics of sounding. Processed signal is then transmitted to radio transmitter 11 and transmitted to radio receiver 5, amplified in the audio signal amplifier 4 and transmitted in the form of sound waves through speaker 3. For mobility of device, power supply is performed due to storage battery 6. To perform music on the apparatus, it is necessary to clamp control holes 2 and, by changing the distance between the microphone and the housing of the apparatus, to open them, thereby adjusting the level of the output signal, tonality and spectrum of sound.

EFFECT: broader functional capabilities.

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