Through this software, you can easily record voice in mp3. It has three options, low, medium, high. It is very easy to use. And its interface is very simple.
Recording Quality:
Low: Bitrate 64/kbps, Sample Rate 22050 Hz, Audio Channel MONO
Med: Bitrate 96/kbps, Sample Rate 44100 Hz, Audio Channel STEREO
High: Bitrate 128/kbps, Sample Rate 44100 Hz, Audio Channel STEREO
Permission Required:
Read/Write External Storage (for saving audio file)
Record Audio (Required for Allow Recording)
Requires Android
5.0 and up
https://play.google.com/store/apps/details?id=com.prashant.audiorecorder
https://play.google.com/store/apps/details?id=com.prashant.audiorecorder&hl=en_US