SOUND PROCESSING DEVICE Russian patent published in 2022 - IPC H04R3/00 B60R21/00 

FIELD: acoustics.

SUBSTANCE: sound processing device contains: a microphone for simultaneous reception of an audible sound having a frequency in the audibility range and an inaudible sound having a frequency outside the audibility range for converting the received sound into electrical signals and issuing electrical signals; the first bandpass filter for receiving electrical signals issued by the microphone and removing components of electrical signals that are outside the audibility range; a device for audio signal processing for applying given signal processing to electrical signals that have passed through the first bandpass filter; a Fourier converter for receiving electrical signals issued by the microphone and performing frequency analysis of received electrical signals in such a way that to receive frequency components of electrical signals. The resulting frequency components include frequency components outside the audibility range, and a signal level determinant to determine that frequency components outside the audibility range have a signal level equal to or exceeding the threshold value. The microphone contains a set of microphones, the Fourier converter contains a set of Fourier converters, and each of Fourier converters is made with the possibility of performing frequency analysis of electrical signals issued by the corresponding one of microphones in such a way that to receive frequency components of electrical signals, while received frequency components include frequency components outside the audibility range, and the signal level determinant contains a set of signal level determinants, each of which is made with the possibility of determining the signal level.

EFFECT: possibility of diagnosing malfunctions of the acoustic system during sound processing.

11 cl, 2 dwg