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US 2019/0103126 A1Published application
Mobile terminal
AssigneeLG Electronics Inc.
InventorsBonggu SHIM, Heungsik SEO, Youngjoo SON, Hosung SONG, Wonsang YI
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Abstract
A mobile terminal is disclosed. A mobile terminal according to the present invention connects an output stage of a receiver to an input stage of a speaker amp and compensates for a distortion of a signal input to a microphone, where the signal exceeds Acoustic Overload Point (AOP) of the microphone, by using an external audio signal received by the receiver in a recording mode, thereby generating distortion-free recording contents.
Claims13
A mobile terminal configured to record an external audio signal, comprising:
- a microphone configured to receive the external audio signal to generate a first audio signal, the microphone having a prescribed Acoustic Overload Point (AOP);
- a receiver configured for receiving voice audio during a call, the receiver configured to receive the external audio signal to generate a second audio signal;
- a speaker amplifier coupled to the receiver and having an input stage that is connected to an output stage of the receiver and configured to amplify the second audio signal to a prescribed magnitude;
- and
- a controller configured to synthesize the first audio signal and the second audio signal,
- wherein the controller determines whether a level of the first audio signal at the microphone is greater than the prescribed AOP such that clipping occurs in the first audio signal, and generates the third audio signal by compensating for clipping in the first audio signal by using the second audio signal from the receiver.
3 more elements
Dependencies are inferred from the claim text.