Hybrid turbomachine for aircraft with an active acoustic control system

A hybrid turbomachine comprising an electric generator, a gas generator equipped with an air inlet and with an exhaust and an acoustic monitoring system comprising a control unit, a plurality of microphones and a plurality of loudspeakers configured to emit noise-attenuating acoustic waves;

• wherein at least a first microphone of the plurality of microphones is directly connected to the electric generator;
• wherein at least a first loudspeaker of the plurality of loudspeakers is positioned proximately to the electric generator, and at least a second loudspeaker of the plurality of loudspeakers is positioned proximately to the air inlet of the gas generator and/or at least a third loudspeaker of the plurality of loudspeakers is positioned proximately to the exhaust of the gas generator;
• wherein the control unit of the acoustic monitoring system is mounted on the electric generator and configured to make an AC-DC electrical conversion of an electromotive force of the electric generator into an adjustable DC voltage intended to be distributed to loads or to energy storage means, wherein the control unit of the acoustic monitoring system further comprises a database including noise models generated as a function of operating parameters of the hybrid turbomachine, and a determination module configured to determine, for each loudspeaker of the plurality of loudspeakers, a respective first signal to be emitted, in response to a failure of one of the plurality of the microphones, based on the noise models to the respective loudspeaker as a function of i) the operating parameters of the hybrid turbomachine and ii) the positioning of the respective loudspeaker;
• and
• wherein the acoustic monitoring system attenuates noise generated by the hybrid turbomachine by emitting acoustic waves from the plurality of loudspeakers, wherein the acoustic waves emitted from the plurality of loudspeakers are in phase opposition with acoustic waves received by the plurality of microphones.