If you want to write a WAV with MP3 inside you can do it with Audacity, choosing "Custom FFmpeg Export" when you export, but you have to add FFmpeg to your computer for Audacity to use. Then add RIFF headers to the MP3 using CDex as Steve described, so PowerPoint thinks it is a WAV. So I would say try 8000 Hz, 12000 Hz and 16000 Hz project rate and see which sounds least bad. However for MP3 exports it is often better to use low sample rates with low bit rates (and vice-versa) because of the way MP3 encoding works. Once upload completed, converter will redirect a web page to show the compression result. Click button 'Compress' to start upload your files. In general, all options can produce a smaller file than the original file.
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You can get your audio file in smaller size from the Converted tab. Finally, tap on the Convert All button to start reducing audio size quickly. Once after completing the audio settings, proceed by clicking Create button. Higher sample rates usually give better quality than lower rates, and higher sample rates do not increase file size in MP3's, so you could use a sample rate up to 24000 Hz with 16 kbps bit rate. The default quality option is to reduce file size as much as possible while maintaining audio quality. The lower the bit rate selected, the smaller the file size. Sample rate is chosen in "Project Rate" bottom left of the Audacity window. Before saving the file, click "Options":Īnd choose 16 kbps bit rate (18 kbps is invalid for MP3's). MPEG layer 3 means export as "MP3 Files" from Audacity (File > Export). I cannot find these settings in audacity.
#Audio file size reducer free
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Useful service to fit more songs on your MP3. Simple yet fast, help you get smaller audio files at one go. Our video compression algorithm was carefully designed and optimized to reduce file size without ruining the image or sound quality of your video. MP3Reducer is a free service that allows you to reduce MP3 file size online, compress mp3 audio files online. Shrink audio files to smaller size without sacrificing much quality. Spartan001 wrote:A friend of mine says I need to convert it with MPEG-layer3 and encoder settings 8000 Hr - 18 kBit/s - Stereo - 2kB/sec. Recommended Free Audio Size Reducer Free HD Video Converter Factory.