Invention Grant
- Patent Title: Prevention of signal clipping due to decrease in amplifier supply voltage
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Application No.: US15342846Application Date: 2016-11-03
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Publication No.: US10021485B2Publication Date: 2018-07-10
- Inventor: Jeffrey Allen May , Firas Azrai
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: US TX Austin
- Assignee: Cirrus Logic, Inc.
- Current Assignee: Cirrus Logic, Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03G5/00
- IPC: H03G5/00 ; H04R3/04 ; H04R29/00 ; H03G7/00 ; H03G3/00 ; H03G3/30

Abstract:
A method may include receiving information indicative of an amplitude of an audio output signal, receiving information indicative of a predicted voltage of a power supply of a signal path having an audio input for receiving an audio input signal and an audio output for generating the audio output signal based on the audio input signal, predicting from the information indicative of the amplitude of the audio output signal and the information indicative of the predicted voltage of the power supply whether the audio output signal will exceed an available supply voltage generated by the power supply, and responsive to determining the audio output signal will exceed the available supply voltage generated by the power supply, attenuating the audio input signal or a derivative thereof to reduce the amplitude of the audio output signal such that the audio output signal does not exceed the available supply voltage of the power supply.
Public/Granted literature
- US20170142518A1 PREVENTION OF SIGNAL CLIPPING DUE TO DECREASE IN AMPLIFIER SUPPLY VOLTAGE Public/Granted day:2017-05-18
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