Mobile telephone and correction method of internal electroacoustic component thereof

Abstract

The invention discloses a mobile telephone and a correction method of an internal electroacoustic component of the mobile telephone. The mobile telephone comprises a native machine, a handfree earphone and a detection module. The correction method comprises the following steps that: the detection module turns on a voice frequency generator of the mobile telephone to generate a first voice frequency electric signal; the first voice frequency electric signal is converted into a first acoustical signal for displaying through an electrical-acoustical conversion component; the electrical-acoustical conversion component is placed near an acoustical-electrical conversion component, wherein the acoustical-electrical conversion component receives the first acoustical signal which is converted into a second voice frequency electric signal to be transmitted back to the detection module; and the detection module compares the difference of the first and second voice frequency electric signals, and judges whether the parameters of the internal electroacoustic component are within a preset range or not according to the comparison result, if so, 'normal' is displayed, if not, 'abnormal' is displayed, and the parameters of the internal electroacoustic component are adjusted. According to the invention, the internal electroacoustic component of the mobile telephone can be corrected at different sites to ensure stable sounding volume just by providing the portable standard handfree earphone without extra acoustic testing instrument.

Description

technical field

[0001] The invention relates to a calibration method of an electroacoustic element, in particular to a calibration method of a built-in electroacoustic element of a mobile phone. Background technique

[0002] The volume and frequency response of the handset, speaker, built-in microphone, earphone, and external microphone (the volume difference at each frequency) need to be set properly after experiments by engineers during design, so as to have an appropriate volume of sound when talking with other people , as far as mobile phones are concerned, the volume and frequency response of the handset, speaker, built-in microphone, earphone, and external microphone must be certified by the certification laboratory before they can be marketed.

[0003] However, due to the variation of production procedures, some of the same components, even in the same production batch number, are louder and some are louder for the acoustic-electric conversion components such as earpi...

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