8月18日的Stereo Sound Recorder应用程序分析

Sound and voice recorder for Android, uses RAW microphone data to capture every sound and records in lossless format (PCM WAV). Records stereo audio - listen with headphones and feel surrounded by the sound. Features: • record in PCM WAV (lossless), or M4A (compressed - small file size) • raw MIC data (captures all sound) • also recording with screen OFF • stereo MIC (if device has 2 MICs) • select the Audio Source (UNPROCESSED / CAMCORDER / MIC / DEFAULT) • 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 processing 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 • stereo / mono channel selection • option to swap left / right channels • left / right channel balance +/- 10 dB • keep screen ON - option so that device does not enter sleep mode • disable ringing and vibration while recording - option so that the recording does not get ruined by the phone ring or vibration • in-app audio player (listen to the recordings) • free, NO ADS, only limitation is recording stops after 10 min. per recording, which is more than enough for recording one song. 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 damage your ears. Free version intended for personal, non-commercial use only.