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help with choosing sample rate, bit rate, max bandwidth
Hi,
For some lower quality endoding of files to mp3's, I noticed that I can choose different sample rates for the destination file-- ie: 32000, 22000, 16000. I encoded one file at 40kbps/22000 and then again at 40kbps/32000. They were both the same size after encoding. However, the 'maximum bandwidth for the files we 32000 was 4235Hz 22000 was 6032Hz I figured the higher bitrate would have the higher bandwidth, but it does not--the program Cool Edit Pro, adjusted it automatically. What I am wondering is, how much does the sample rate effect the quality of mp3 files? And is there a formula to calculate proper cutoff? And why did the bandwidth go down for a higher sample rate? The reason I'm trying to figure this out is because I am seeking a happy medium between smallest size possible with acceptable quality. Thanks, Mb |
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