MP3 Speed Changer is a useful utility, which may come in handy whenever you need to slow down or accelerate the plackback speed of any MP3 track.
First of all, there's no need to mention that there are several programs out there that can modify the speed of an audio file as it is being played, but as soon as you close the program you'll notice your files remain untouched. If what you need is to make permanent speed changes to your audio files then this is the right tool for you.
Besides modifying the speed of your audio files, MP3 Speed Changer can also modify the quality (bitrate) of your MP3s from 64kbps to 320kbps. But of course, if you provide a file with low bitrate (say 64kbps) and you raise it to a higher quality nothing will really happen since your original file didn't really have enough quality from the beginning.
Beware that all speed or quality changes made to your files will be permanent and you won't be able to recover them. That's why it's recommended to save the output files on a different location and do not overwrite your original MP3s.
Comments (1)
BUT . . . I'm beginning to formulate a theory about these programs.There seems to be a particular speed at which their sped-up versions become garbled. For FasterAudio, that tipping point is at 200 percent. Everything sounds pretty normal (just very fast!) up to 200 percent. At 201 percent, one starts to hear some pretty significant sonic distortion, weird "echo"-y background noises, and clippy/choppy sound. As indicated above, even with the best quality original, I can't make out what the speaker is saying above about 230 percent; the distortion is just too great.
I have been looking for something to do a better job than FasterAudio.
MP3 Speed Changer isn't it. At least not at its present state of development (7/25/09). Its tipping point seems to be somewhere in the mid-100s percent--perhaps at 150, where the creators have it pre-set at startup. I didn't waste my time trying to figure out exactly where its sound goes to pieces. I "just" did some quick testing and realized 200% was useless, and 160% was really bad. Even with an untrained "ear," I BEGAN my compressions at 180% on FasterAudio.
Sorry.
Clarity suffers on FasterAudio