PCM Recorder

This is a simple voice recorder.
For recording, you can select the linear PCM (WAV) format for lossless compression or the AAC format for lossy compression.

Also supports long-time recording in the background.
The sampling rate can be changed to 8k, 16k, 44.1k, 48kHz.

* Call recording is not supported.

Record:
- Recording in high-quality linear PCM (WAV) format
- Recording in highly compressed AAC (M4A) format
- Recording in the background
- Change of sampling rate (8k, 16k, 44.1k, 48kHz)
- Unlimited recording time (up to 2GB)
- Bitrate change (64-192kbps, AAC format only)
- Change microphone gain
- Change monaural or stereo

Playback:
- Playback in the background
- Rename file
- Sort files
- Repeat playback (one song, whole)
- Change of playback speed (0.5x, 0.75x, 1.25x, 1.5x, 2.0x)
- Playback ± 10 seconds, ± 60 seconds
- File sharing

Permission:
- record audio
- wake lock (to background recording)
- write to external storage (to store recordings)
- internet access (only for ads)
- access network state (only for ads）
- read phone state(to record properly when the call comes in)