How come the phone microphone is significantly less sensitive when calling someone than when you’re recording video/audio?

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How come the phone microphone is significantly less sensitive when calling someone than when you’re recording video/audio?

In: Technology
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The sensitivity is the same.

It depends on your mobile network. The older networks (2G for instance) cannot carry too much data (Enough for them to have great quality), so the quality of the voice is reduced. In certain areas, such as the ones capable of VoLTE (Voice over LTE), the sound quality is as high as possible, like you hear over Skype or Discord.

Modern smartphones have built in filters that “listen” and filter for specific frequencies of a typical person talking. So the rest of the background noise is filtered out of the total signal. When recording a video the phone does not “know” what is the important part so it just records everything the same.

Edit: Also, if you call someone everything near the phone is seen as more important so background noise is filtered more.

Standard telephones sample the microphone 8,000 times per second (8,000/s) which is sufficient for reproducing normal speech. When you record an audio or video file for playback, the microphone is normally sampled 5 (40,000/s) to 20 (192,000/s) times more frequently to capture the higher frequencies to the musical instruments. When you increase the sampling count per second, you are able to reproduce the original sound in greater detail.