Method and control circuit for controlling a tactile speaker
AssigneeHarman Becker Automotive Systems GmbH
InventorsMatthias VON SAINT-GEORGE, Daniel BRACHT
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Abstract
A method of controlling a tactile speaker comprises receiving an audio signal and generating at least one filtered audio signal by filtering the audio signal with at least one bandpass filter having a defined frequency band. In addition, at least one shifted audio signal is generated by frequency shifting the at least one filtered audio signal depending on the defined frequency band to a shifted frequency lower than a frequency of the defined frequency band. The tactile speaker is controlled based on the at least one shifted audio signal.
Claims20
A method of controlling a tactile speaker, the method comprising at a control circuit:
- receiving an audio signal,
- generating at least one filtered audio signal by filtering the audio signal with at least one bandpass filter having a defined frequency band,
- generating at least one shifted audio signal by frequency shifting the at least one filtered audio signal depending on the defined frequency band to a shifted frequency lower than a frequency of the defined frequency band, and
- controlling the tactile speaker based on the at least one shifted audio signal.
A control circuit for controlling a tactile speaker, comprising:
- at least one interface for receiving an audio signal and coupling to the tactile speaker, and
- a processing unit configured to perform the steps of:
- generating at least one filtered audio signal by filtering the audio signal received via the at least one interface with at least one bandpass filter having a defined frequency band,
- generating at least one shifted audio signal by frequency shifting the at least one filtered audio signal depending on the defined frequency band to a shifted frequency lower than a frequency of the defined frequency band, and
- controlling the tactile speaker via the at least one interface based on the at least one shifted audio signal.
A tactile audio system, comprising:
- at least one tactile speaker for installation in a seat, and
- a control circuit for controlling the at least one tactile speaker, the control circuit comprising:
- at least one interface for receiving an audio signal and coupling to the at least one tactile speaker, and
- a processing unit configured to perform the steps of:
- generating at least one filtered audio signal by filtering the audio signal received via the at least one interface with at least one bandpass filter having a defined frequency band,
- generating at least one shifted audio signal by frequency shifting the at least one filtered audio signal depending on the defined frequency band to a shifted frequency lower than a frequency of the defined frequency band, and
- controlling the at least one tactile speaker via the at least one interface based on the at least one shifted audio signal.
Dependencies are inferred from the claim text.