CODEWITHSUNDEEP
androidaudiorecord
Seth
Seth

Reputation: 1835

In android, how can I boost the input from the microphone for audio recording?

I wrote an app that records audio. Everything works. However, I am going to be using this app to record class room notes. How can I boost the input of the microphone to better capture all the noise? I wouldn't mind using root if I must. But wasn't sure if there was an API to do this.

Thanks all for reading!

Upvotes: 1

Views: 6198

Answers (1)

dberm22
dberm22

Reputation: 3203

If you are asking how to make the microphone more sensitive, I'm not sure. That would involve either operating the microphone at a higher voltage and/or hacking the drivers, neither of which are doable programatically, AFAIK. However, you could try amplifying the output by multiplying the output by some value (say 1.1 for 10% volume boost). Of course, the more you "amplify" the output, the more you will saturate the speaker (aka distort the audio). There are some signal processing techniques you can try to remove background noise and to isolate the paticular audio of interest, however, these things are merely processing improvements, not hardware upgrades. You can always try plugging in an external microphone into the headphone jack and using that to record the audio.

I know this isn't the answer you were hoping for, but I hope it helps.

Upvotes: 1

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