Sound Recorder Pro

Rating: 4.4/5

High quality audio / voice recorder for Android.

Features:
– raw MIC data (captures all sound)
– stereo MIC (if device has 2 MICs) – listen with headphones and feel surrounded by the sound
– lossless audio format (PCM WAV)
– sample rate 8kHz to 192kHz (older devices may not support all the sample rates)
– bits per sample selection 16-bit (high quality) / 8-bit (record files to use in some embedded systems)
– ajustable gain 0 to 60 dB or automatic (look-ahead AGC)
– AGC buffer step selection 10ms to 500ms
– AGC measured amplitude averaging factor A_avg 0 = max. amplitude, 1 = buffer average
– user-configurable file name including date and time
– 4GB file size technical limit – new file created automatically to continue recording
– stereo / mono channel selection
– swap left/right option
– left/right balance +/- 10 dB
– keep screen ON – option so that device does not enter sleep (due to a security update in Android now microphone gets cut off after a few seconds for background apps 🙁 )
– disable ringing and vibration while recording – option so that the recording does not get ruined by the phone ring or vibration

– NEW! convert wav to m4a to get smaller file size (requires Android 4.3 and up)

You have to see the magic of automatic sound level / gain control (AGC), especially if you use to record meetings / lectures. It works as follows: it amplifies the quiet sounds to capture all, but then if a loud sound happens, it gets reduced volume to not blow your ears.
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