Versions

Initial release	Aug 30, 2010
Current version (1.3)	Nov 9, 2010

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Long-Time Recorder is a smart recorder for meeting, concert , classroom. It can skip no voice time to reduce the total time for the audio file. The

software support MP4 AAC compress to reduce the sound file to less than 10% also. So you may easy to send audio file through Email and WIFI

HTTP.

Long-Time Recorder samples sounds using microphone and then applies a fourier transform to samples to obtain a frequency spectrum. Spectrogram

display when recording and replaying. So you can know whether the noisy environment.

Please note: When using a 1st generation iPhone the internal microphone limits the sample rate to 8KHz. Using an external microphone or headset

allows up to 44KHz sample rate. The iPhone 3G does not suffer this limitation.

Features:
sound pressure level (SPL) display
Skip low voice (monitor 500-2000Hz) when recording
MultiTask supported (recording when screen sleep/black or background task)
22KHz sampling rate for up to 11KHz measurements
MP4 AAC compress recorded audio file size to Pause when recording and replaying
Harmonic Analyzer (1x-8x) when recording and playback
The progress of control when replaying
Noise Filter (Reduce 8000Hz low signal) when playback
Voice Gain (Increase signal between 500-3000Hz) when playback
Share/Send audio files through Email
Share/Download audio files through WIFI HTTP (All webbrowser in PC or MAC ware supported)