Audio Compression - How to Compress Audio Files on Mac and PC

You may have seen something about audio or AAC audio formats being "compressed". That's talking about making the file size smaller so it can be more easily used on the web. The audio compression is not the same thing as "data compression", which could be achieved by using WinZip or WinRAR compressing software. For audio compression, different codec (the method to store audio information) has different compression ratio. Also different audio settings will affect the file size to some extent, for example, the bit rate, sample rate, channels, etc.

Best Software to Compress Audio Files

Here we will show you both ways to compress audio on Mac and Windows. The only tool you need is iSkysoft Video Converter Ultimate, which is not only a video converter, but also audio converter and audio compressor. Mac and Windows versions are both provided.

Get the Best Audio Compressor - iSkysoft Video Converter Ultimate


  • Compress audio files by adjusting the resolution, bit rate, frame rate and more patermeters.
  • Support almost audio formats, such as MP3, WAV, WMA, AC3, AAC, M4A, OGG, etc.
  • Extract audio from video files.
  • Convert audio/video files to various formats as you need.
  • Download videos from YouTube, Facebook, Vimeo, Vevo, Hulu, Metacafe and more online sites.
  • Allow you to burn videos to DVD if you want.
  • Fully compatible with macOS 10.12 Sierra, Windows 10/8/7/XP/Vista.
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1. Video Tutorial on How to Compress Audio File

First of all, you can watch the video below to get a quick look over how to compress audio files, then follow the detailed steps to resize your audio right away.

2. Step-by-step Guide to Compress Audio Files on Mac

Step 1. Add audio files to audio compressor

Open iSkysoft Video Converter Ultimate for Mac when it has been installed in your computer. To import audio, just drag and drop it to the program. Alternatively, you can go to "File" > "Load Media Files" to achieve that.

how to compress audio files

Step 2. Choose different compression methods

Method 1: Choose a codec with higher audio compression ratio. This method is very effective, but will decrease audio quality apparently. In most case, MP3 is a decent audio format to store compressed audio data with good quality and small file size.

audio compression software

Method 2: Vary audio settings: If you want to keep the original audio format, you can change the audio settings after choose an output format from the list. Generally, the lower the bit rate is set, the smaller the file size will be. For example, an audio file with 128 kbps bit rate can save nearly 1 MB per 5 MB without any major decrease in quality after changing the bit rate to around 90 kbps.

audio compressor

So, depending on your demands, you can either select MP3 or other format, as well as change audio settings or not.

Step 3. Start to compress audio files on Mac

The final thing is to click the "Convert" button to start compressing audio on Mac. You'll get the compressed audio after a while.

compress audio

So now you know what compression is. Cool, huh? If you want to experiment with recording and producing audio, there are lots of tutorials out there on the web. Of course I think you'll like the ones at our Audio Solution section. But I may be biased. Either way, go forth and either impress your friends, make the world safe for better audio, or both! By the way, if you want to compress MP3 files, compress WAV audio files or even compress MP4 videos, just check these pages to get details.

Tips for Using Audio Compression

Audio compress is use everywhere, but there are loss audio compress and lossless audio compress. The former includes Free Lossless Audio Codec (FLAC), Apple Lossless, Dolby TrueHD, RealPlayer Lossless, WMA Lossless, etc., while the latter includes MP3, AAC, WMA, Dolby AC-3, Ogg Vorbis, etc. Lossless compression ratios are around 50-60% of original size, while lossy compression typically creates files of 5 to 20% of the size of the uncompressed original. The ratio will determine how much level your audio is compressed.

iSkysoft Editor
Apr 04,2019 18:16 pm / Posted by to Compress Videos

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