This is a Microphone App, aimed at playing back voice at extended speakers(amplifiers) connected to your phone with Bluetooth or headphones. This development is made for emergency use, in lecture and public gatherings to extend voice to the public hearing. Benefits of the App include the low cost of the Bluetooth speaker.
The aim of the app can accomplish by installing the app from the Google play store and choosing any of the use cases. From the experiment, case four(4) produce the best result.
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