Patent ID: 11948572
Assignee: GOOGLE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system to modulate packetized audio signals, comprising:
a natural language processor component executed by a data processing system to receive, via an interface of the data processing system, data packets comprising an input audio signal detected by a sensor of a client device;
a session handler component executed by the data processing system to establish a communication session between the client device and the data processing system, the communication session comprising the input audio signal;
the natural language processor component to parse the input audio signal to identify a request and a trigger keyword corresponding to the request;
a direct action application programming interface of the data processing system to generate, based on the trigger keyword, a first action data structure responsive to the request;
a content selector component executed by the data processing system to receive the trigger keyword identified by the natural language processor and select, from candidate content items and based on the trigger keyword and metadata indicative of corresponding subject matter of the candidate content items, a content item via a real-time content selection process;
an audio signal generator component executed by the data processing system to generate an output signal comprising a first portion corresponding to the first action data structure and generated with a first audio modulation, and a second portion corresponding to the content item and generated with a second audio modulation different from the first audio modulation, the first audio modulation including a first amplitude modulation and the second audio modulation including a second amplitude modulation that is different from the first amplitude modulation;
a policy engine component executed by the data processing system to:
determine that the content item selected via the real-time content selection process was not previously presented to the client device during the communication session; and
instruct, responsive to the content item not previously provided during the communication session, the audio signal generator component to generate the second portion of the output signal with the second audio modulation different from the first audio modulation; and

an interface of the data processing system to transmit data packets comprising the output signal generated by the audio signal generator component to cause an audio driver component executed by the client device to drive a speaker of the client device to generate an acoustic wave corresponding to the output signal.