【實用商業app】Long Time Recorder|最夯免費app-綠色工廠好玩App

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) displaySkip low voice (monitor 500-2000Hz) when recordingMultiTask supported (recording when screen sleep/black or background task)22KHz sampling rate for up to 11KHz measurementsMP4 AAC compress recorded audio file size to <10%Pause when recording and replayingHarmonic Analyzer (1x-8x) when recording and playbackThe progress of control when replayingNoise Filter (Reduce <400Hz and >8000Hz low signal) when playbackVoice Gain (Increase signal between 500-3000Hz) when playbackShare/Send audio files through Email Share/Download audio files through WIFI HTTP (All webbrowser in PC or MAC ware supported)