Noise cancellation based on airflow generator operational speed
AssigneeHewlett-Packard Development Company, L.P.
InventorsChao-Wen Cheng, Tsung-Yen Chen, Chien Fa Huang, Wen Shih Chen, Mo-Hsuan Lin
Life of this patent
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Abstract
In some examples, an electronic device includes an audio output device, an airflow generator to generate an airflow, and a system controller to control an operational speed of the airflow generator. The electronic device further includes an audio controller to generate a noise cancellation audio output based on an indicator of the operational speed of the airflow generator provided from the system controller to the audio controller, and send the noise cancellation audio output to the audio output device to mitigate noise produced by the airflow generator.
Claims15
An electronic device comprising:
- an audio output device;
- an airflow generator to generate an airflow;
- a system controller to control an operational speed of the airflow generator;
- and
- an audio controller to:
- generate a noise cancellation audio output based on an indicator of the operational speed of the airflow generator provided from the system controller to the audio controller, wherein the noise cancellation audio output is generated without using an audio sensor to measure noise produced by the airflow generator;
- and
- send the noise cancellation audio output to the audio output device to mitigate noise produced by the airflow generator.
An audio coder/decoder (codec) for an electronic device comprising an airflow generator, the audio codec comprising:
- an audio controller to:
- receive, from a system controller that controls an operational speed of the airflow generator, an indicator of the operational speed of the airflow generator;
- generate a noise cancellation audio output based on the indicator of the operational speed of the airflow generator, wherein the noise cancellation audio output is generated without using an audio sensor to measure noise produced by the airflow generator;
- and
- send the noise cancellation audio output to an audio output device to mitigate noise produced by the airflow generator.
A method comprising:
- controlling, by a system controller of an electronic device, an operational speed of an airflow generator;
- sending, by the system controller to an audio controller, an indicator of the operational speed of the electronic device;
- receiving, by the system controller, a temperature of a region of the electronic device;
- sending, by the system controller to the audio controller, the temperature of the region;
- generating, by the audio controller, a noise cancellation audio output based on the operational speed of the electronic device and the temperature of the region, wherein the noise cancellation audio output is generated without using an audio sensor to measure noise produced by the airflow generator;
- and
- sending, by the audio controller, the noise cancellation audio output to an audio output device of the electronic device to mitigate noise produced by the airflow generator.
Dependencies are inferred from the claim text.