# US 12,119,020 B2 · Audiometric receiver system to detect and process audio signals

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- Number: US 12,119,020 B2
- Document ID: US12119020B2
- Status: Granted
- Kind: B2
- Application number: 17/303,622
- Filed: 2021-06-03
- Published: 2022-12-08
- Granted: 2024-10-15
- Earliest claimed: 2021-06-03
- Assignees: International Business Machines Corporation
- Applicants: International Business Machines Corporation
- Inventors: Sajesh Sreedharan Kakkara; Pravin Kailashnath Kedia; Sudhir Bhaurao Titirmare
- Web page: https://patentgrep.com/patent/US12119020B2

## CPC

- B63G 8/39: Arrangements of sonic watch equipment, e.g. low-frequency, sonar
- G10L 25/60: for measuring the quality of voice signals
- G10L 21/034: Automatic adjustment
- G10L 25/21: the extracted parameters being power information
- H04B 11/00: Transmission systems employing ultrasonic, sonic or infrasonic waves
- H04L 9/12: Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
- H04R 3/00: Circuits for transducers (arrangements for producing a reverberation or echo sound G10K15/08; amplifiers H03F)
- G01S 7/52001: {Auxiliary means for detecting or identifying sonar signals or the like, e.g. sonar jamming signals}
- G10K 11/006: {Transducer mounting in underwater equipment, e.g. sonobuoys}
- G10L 19/018: Audio watermarking, i.e. embedding inaudible data in the audio signal
- B63G: OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS (means of attack or defence in general, e.g. turrets F41H)
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR

## Abstract

In an approach for detecting and processing multiple audio signals simultaneously, an audiometric receiver system comprises a transmitter, wherein the transmitter comprises a digital signal processor, and wherein the digital signal processor comprises a quality check component, an amplifier or attenuator component, mixer component, a modulator component, and an encrypter component; and a receiver, wherein the receiver comprises a decrypter component, a demodulator component, a splitter component, and a second amplifier or attenuator component.

## Claims

### Claim 1

An audiometric receiver system comprising:
a transmitter, wherein the transmitter comprises a digital signal processor, and wherein the digital signal processor comprises a quality check component, an amplifier or attenuator component, a mixer component that merges individual audio signals modified by the amplifier or attenuator component into one signal and includes a respective header and footer between each audio signal merged into the one signal, a modulator component, and an encrypter component; and
a receiver, wherein the receiver comprises a decrypter component, a demodulator component, a splitter component that splits the one signal into the individual audio signals based on the respective header and footer between each audio signal in the one signal, and a second amplifier or attenuator component.

### Claim 2 (depends on 1)

The audiometric receiver system of claim 1, wherein the transmitter further comprises an analog signal input pin and a digital signal input pin enabled to receive audio signals from at least one sensor or at least one transducer communicatively coupled to the transmitter.

### Claim 3 (depends on 1)

The audiometric receiver system of claim 1, wherein the transmitter processes received audio signals using the digital signal processor to produce a single encrypted audio signal and sends the single encrypted audio signal to the receiver.

### Claim 4 (depends on 1)

The audiometric receiver system of claim 1, wherein the quality check component improves acoustic metrics of received audio signals and identifies a signal power, an amplitude, and a frequency for each of the received audio signals.

### Claim 5 (depends on 1)

The audiometric receiver system of claim 1, wherein the amplifier or attenuator component amplifies or attenuates received audio signals to a pre-set level to produce modified audio signals to ensure the modified audio signals can be sent a distance without data loss.

### Claim 6 (depends on 1)

The audiometric receiver system of claim 1, wherein the modulator component modulates the one signal by adding a booster signal to produce a modulated signal.

### Claim 7 (depends on 6)

The audiometric receiver system of claim 6, wherein the encrypter component encrypts the modulated signal using commutative watermarking encryption to produce an encrypted signal.

### Claim 8 (depends on 3)

The audiometric receiver system of claim 3, wherein the receiver performs a reverse processing on the single encrypted audio signal to re-produce the received audio signals.

### Claim 9 (depends on 7)

The audiometric receiver system of claim 7, wherein the decrypter component decrypts the encrypted signal to produce a decrypted signal.

### Claim 10 (depends on 9)

The audiometric receiver system of claim 9, wherein the demodulator component demodulates the decrypted signal to produce a demodulated signal.

### Claim 11 (depends on 10)

The audiometric receiver system of claim 10, wherein the splitter component splits the demodulated signal into the individual audio signals.

### Claim 12 (depends on 11)

The audiometric receiver system of claim 11, wherein the second amplifier or attenuator component amplifies or attenuates the individual signals to a second pre-set level.

### Claim 13

A method of processing audio signals using an audiometric receiver system comprising:
receiving, at an input pin of an audiometric receiver of the audiometric receiver system, individual audio signals from at least one sensor or transducer;
processing, by a digital signal processor of the audiometric receiver of the audiometric receiver system, the individual audio signals to produce a single processed signal, wherein processing the individual audio signals to produce the single processed signal comprises merging the individual audio signals into the single processed signal by attaching a header and footer between each audio signal to form the single processed signal;
transmitting, by the audiometric receiver, the single processed signal to an audiometric transmitter of the audiometric receiver system;
receiving, at the audiometric transmitter, the single processed signal;
processing, by the audiometric transmitter, the single processed signal to split the single processed signal into the individual audio signals based on the respective header and footer between each audio signal to reproduce the individual audio signals; and
transmitting, by the audiometric transmitter, the individual audio signals.

### Claim 14 (depends on 13)

The method of claim 13, wherein processing the individual audio signals to produce the single processed signal further comprises:
amplifying or attenuating the individual audio signals to a pre-set level as required for further processing;
modulating the single processed signal; and
encrypting the single processed signal using a dynamic encryption seed algorithm.

### Claim 15 (depends on 14)

The method of claim 14, wherein processing the single processed signal to reproduce the individual audio signals comprises:
decrypting the one signal using the dynamic encryption seed algorithm as it was when the single processed signal was encrypted;
demodulating the one signal;
splitting the one signal into the individual audio signals; and
amplifying or attenuating the individual audio signals.