smkranz Posted September 16, 2004 Report Share Posted September 16, 2004 Hi, all. Just joined and am getting great use out of the forums. My query concerns file sizes of live (mic) recordings using Hi-MD. A friend of mine and I who live several states apart are contemplating purchase of new MZ-NH900 Hi-MD recorders to record songs played on our respective instruments (fiddle & banjo) and email them to each other so we can practice & learn to accompany each other when we do get together. He uses a dial-up service provider, so it seems the optimal solution would be to upload and convert to mp3 or another compressed format for purposes of emailing files. I understand this is *possibly* on the horizon from Sony with a wave converter. I've read about marcnet's software solution as well as doing real-time analog recording using Total Recorder, and I'm not afraid. I suspect he, too, would be able to conquer the technicalities. But, in advance of of going in this direction... Question: From what I've read, live mic recording is done in linear PCM which, with approx. 93 minutes on a 1 GB Hi-MD disc, would yield a file size of about 10+ MB per minute. Is that right? If so, that would stress his dial-up connection without converting/compressing the files (tho I suppose maybe compressing them with winzip would help???), and make it about as practical to just mail discs back & forth. Thanks in advance... Quote Link to comment Share on other sites More sharing options...
jadeclaw Posted September 16, 2004 Report Share Posted September 16, 2004 Dial-up is 53kBit maximum, that makes 6.6kByte per second. One hour of Linear-PCM is 650MByte = 665600kByte. Now we divide that by 6.6kByte, that gives us 100849 seconds. We divide that by 3600. That gives us 28 hours download-time for one hour of linear-PCM. So, the only way to go is to used compressed audio. The best way would be to use OGG-Vorbis and encode the files with 64kBit datarate. You will get a quality, that is a bit below FM-Radio but well above WindowsMedia and useable download-times - 1.2 hours for one hour of audio. The OGG-Encoder can be downloaded here: http://www.vorbis.com/download_win_1.0.1.psp For playback use Winamp2 / 3 or 5. Quote Link to comment Share on other sites More sharing options...
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