Method and device for adjusting to adapt speech inputting distance
A technology of distance change and voice input, applied in the direction of amplification control, transducer circuit, sensor, etc., can solve problems such as inconvenience of communication, and achieve the effect of improving satisfaction and comfort
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[0029] The invention adopts analog and digital hardware technology, realizes the automatic adjustment of the voice signal amplitude, and achieves the purpose of adapting to the change of the voice input distance.
[0030] Such as figure 2 As shown, the device of this embodiment includes a programmable gain amplifier, an analog-to-digital (AD) conversion module, a digital-to-analog (DA) conversion module, an amplitude statistics module and a gain control module, wherein:
[0031] The programmable gain amplifier is used to amplify the input analog voice signal according to the gain output by the gain control module, and output the amplified analog signal to the AD conversion module. The present invention can also use other amplifiers with adjustable gain.
[0032] The AD conversion module is used to convert the above-mentioned amplified analog signal into a digital voice signal, and output it to the digital-to-analog conversion module and the amplitude statistics module respec...
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