US 10,945,068 B2Granted

Ultrasonic wave-based voice signal transmission system and method

AssigneeHuawei Technologies Co., Ltd.

InventorsChaojun Deng, Liming Fang

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Abstract

An ultrasonic wave-based voice signal transmission system, where the system includes an ultrasonic modulator, a beamforming controller, an ultrasonic transducer array, and a user detector. The ultrasonic modulator is configured to modulate a voice signal onto an ultrasonic band and output the modulated voice signal to the beamforming controller. The user detector is configured to detect a user and output a detection result of the user to the beamforming controller. The beamforming controller is configured to control according to the detection result from the user detector, a phase and amplitude of the modulated voice signal to obtain an electrical signal pointing to the user, and output, to the ultrasonic transducer array, the electrical signal pointing to the user. Therefore, call convenience can be improved for the user.

Claims20

Dependent claims

An ultrasonic wave-based voice signal transmission system, comprising:

a beamforming controller;
an ultrasonic modulator coupled to the beamforming controller and configured to:
modulate a voice signal onto an ultrasonic band;
and
output the modulated voice signal to the beamforming controller;
a user detector coupled to the beamforming controller and configured to:
detect a user;
and
output a detection result of the user to the beamforming controller, wherein the detection result is a location information of the user, and wherein the user detector comprises:
a voice signal receiver array configured to receive an external voice signal;
and
a voice analyzer coupled to the beamforming controller and the voice signal receiver array and configured to:
obtain, by analysis, the location information of the user according to a signal characteristic of the external voice signal;
and
output the location information of the user to the beamforming controller,
wherein the beamforming controller is configured to:
control a phase and an amplitude of the modulated voice signal according to the location information of the user received from the voice analyzer to obtain an electrical signal pointing to the user;
and
output the electrical signal pointing to the user to an ultrasonic transducer array, and
wherein the ultrasonic transducer array is coupled to the beamforming controller and configured to:
convert the electrical signal pointing to the user received from the beamforming controller into an ultrasonic signal with a beam pointing to the user;
and
transmit the ultrasonic signal.

20 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/306,768Filed 3 Jun 2016
Published: US 2019/0297416 A126 Sep 2019
Granted: 9 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04R 1/403
By combining a number of identical transducers: loud-speakers
H04S 7/303
Electronic adaptation of stereophonic sound system to listener position or orientation: tracking of listener position or orientation
H04R 2201/401
Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but…:…
H04R 2217/03
Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of…