chenks Posted November 16, 2009 Share Posted November 16, 2009 can anyone suggest an app (or anything else) that will let me level out the volume of various MP3s so that they are all the same and then export them to WAV, AIF, or CAF? the MP3 files are short (no longer than 30 seconds). also be preferrable to be able convert them from stereo to mono (basically good enough to be played on a mobile device and no more). Link to comment Share on other sites More sharing options...
shaywood Posted November 16, 2009 Share Posted November 16, 2009 I'm not sure of a free way of doing this in osx. The only way I have done it in the past is by using a combination of the following: MacMP3Gain Max In my opinion Max is the best music conversion tool on any platform. Give them a try! Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 Max does not appear to be able to open mp3 files. when i tried to open the mp3 files i had, they were all greyed out. Link to comment Share on other sites More sharing options...
shaywood Posted November 16, 2009 Share Posted November 16, 2009 File->Convert Files. Then select the .mp3 files you would like to convert. Then in the preferences->formats configure the type of file you would to convert the mp3 to. There's every file format from FLAC to XI. Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 ok got it to convert, but the resulting file size is way too big. original mp3 file - 199Kb converted AIF file - 430Kb file is 5 seconds long. any suggestions for getting this down to the same as the mp3 file or smaller? Link to comment Share on other sites More sharing options...
giga Veteran Posted November 16, 2009 Veteran Share Posted November 16, 2009 AIFF is uncompressed audio, the resulting file size will have a large file size. If you want lossless, use FLAC or ALAC. Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 i don't want lossless, but the tool that i am going to be using the sound files in needs them to be either WAV, AIF, or CAF. 430Kb per file is too large. there are 12 files in total to convert. Link to comment Share on other sites More sharing options...
Reverse Engineer Posted November 16, 2009 Share Posted November 16, 2009 edit: sorry, didn't read properly, thought you were wanting to convert to mp3's. Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 edit: sorry, didn't read properly, thought you were wanting to convert to mp3's. no, covert from mp3 to either WAV, AIF or CAF. Link to comment Share on other sites More sharing options...
giga Veteran Posted November 16, 2009 Veteran Share Posted November 16, 2009 i don't want lossless, but the tool that i am going to be using the sound files in needs them to be either WAV, AIF, or CAF.430Kb per file is too large. there are 12 files in total to convert. Well the problem is that those are lossless audio formats which are uncompressed. (at least WAV and AIFF) Bitrate for WAV and AIFF are calculated like such: (sample rate) * (bit depth) * (number of channels) = kbits per second sample rate: 44100 Hz bit depth: 16-bit channels: 2 44100 * 16 * 2 = 1411 kilobits per second. So that's 173 kilobytes per second of the audio clip. Large file size. Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 yes but if change it from stereo to mono and lower the bitrate etc, i should be able to have a smaller file size ? Link to comment Share on other sites More sharing options...
giga Veteran Posted November 16, 2009 Veteran Share Posted November 16, 2009 yes but if change it from stereo to mono and lower the bitrate etc, i should be able to have a smaller file size ? Mono should decrease the file size, yes. I wouldn't change the sample rate or bit depth as that would be going lower than CD quality. Link to comment Share on other sites More sharing options...
chenks Posted November 16, 2009 Author Share Posted November 16, 2009 i don't need CD quality, as the audio will be played on a small mobile device (which only was one low powered speaker). Link to comment Share on other sites More sharing options...
giga Veteran Posted November 16, 2009 Veteran Share Posted November 16, 2009 Go for it then. Link to comment Share on other sites More sharing options...
shaywood Posted November 16, 2009 Share Posted November 16, 2009 Did you manage to sort it chenks, fella? Link to comment Share on other sites More sharing options...
chenks Posted November 17, 2009 Author Share Posted November 17, 2009 Go for it then. with what app? i've not been able to work how to specifically do this yet with any of the recommended apps. i can easily conver them to WAV, but not convert to mono and lower bitrate as well. Did you manage to sort it chenks, fella? no not yet Link to comment Share on other sites More sharing options...
RuudJacobs.NET Posted November 17, 2009 Share Posted November 17, 2009 Try wavepad, you can even batch process a lot of files at once.. Link to comment Share on other sites More sharing options...
giga Veteran Posted November 18, 2009 Veteran Share Posted November 18, 2009 with what app?i've not been able to work how to specifically do this yet with any of the recommended apps. i can easily conver them to WAV, but not convert to mono and lower bitrate as well. no not yet Use mp3gain to adjust the volume. Then in Max, convert that mp3 to another mp3, this time making it mono. Then take the resulting mp3, and convert it to 8-bit wav. iTunes can also do this second part in one step. (8-bit and mono, as well as the sample rate which Max doesn't seem to be able to adjust) Link to comment Share on other sites More sharing options...
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