Mobile Phone and Method for Processing Call Signal Thereof
AssigneeHuizhou Tcl Mobile Communications Co., Ltd.
InventorsYanchun Wu, Zihua Lin
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Abstract
The present invention discloses a method for processing a call signal of a mobile phone, the method includes detecting a current call state of the mobile phone; acquiring an environmental noise signal when the mobile phone enters an earphone call state; and performing a noise reduction processing to a call signal according to the environmental noise signal for acquiring a call signal with the noise reduction processing. The present invention further discloses a mobile phone. The present invention is capable of ensuring that a user is not affected by environmental noises for guaranteeing a better quality of a call when the user makes the call with an earphone.
Claims15
A method for processing a call signal of a mobile phone, comprising:
- a. detecting a current call state of the mobile phone for judging whether the mobile phone enters an earphone call state;
- b. utilizing a main microphone for acquiring a first environmental noise signal when the mobile phone enters the earphone call state, wherein the step b further comprises:
- utilizing a sub-microphone for acquiring a second environmental noise signal when the mobile phone enters the earphone call state;
- and
- c. performing a noise reduction processing to a call signal acquired by an earphone microphone according to the first environmental noise signal for acquiring a call signal with the noise reduction processing,
- wherein the noise reduction processing is performed according to the following equation in the step c:
- S=L1−M1.
- where S is the call signal with the noise reduction, L1 is the call signal acquired by the earphone microphone, and M1 is the first environmental noise signal acquired by the main microphone.
A method for processing a call signal of a mobile phone, comprising:
- a. detecting a current call state of the mobile phone for judging whether the mobile phone enters an earphone call state;
- b. utilizing a main microphone for acquiring a first environmental noise signal when the mobile phone enters the earphone call state;
- and
- c. performing a noise reduction processing to a call signal acquired by an earphone microphone according to the first environmental noise signal for acquiring a call signal with the noise reduction processing,
- wherein the first environmental noise signal is multiplied by an adjustable coefficient with a specific numerical value for adjusting an amplitude of the first environmental noise signal.
A mobile phone, comprising a main microphone and an earphone microphone pluggable on the mobile phone, wherein the mobile phone further comprises:
- a baseband signal processing chip for detecting a current call state of the mobile phone for judging whether the mobile phone enters an earphone call state, the main microphone utilized for acquiring a first environmental noise signal when the mobile phone enters the earphone call state;
- and
- a noise reduction circuit for performing a noise reduction processing to a call signal acquired by the earphone microphone according to the first environmental noise signal for acquiring a call signal with the noise reduction processing,
- wherein the first environmental noise signal is multiplied by an adjustable coefficient with a specific numerical value for adjusting an amplitude of the first environmental noise signal.
Dependencies are inferred from the claim text.