Bitrate determines how much data is allotted to each second of the file's play time. Return to the MP3's name heading and navigate down the menu to the "Set Rate" heading. Launch Audacity and drag and drop your MP3 file into the program. Before you get started reducing the size of your MP3 files, download and install the LAME MP3 Encoder. Click in the "File" heading, located in the top-right corner of Audacity. To convert the track to mono, click the stereo track's drop-down menu, which is to the left of the blue wave-form graph. you can set custom/variable bitrate, choose audio channel, sample rate and cut audio file to get desired output file size. Pick a lossy format to export to e.g. Sample rate represents the number of samples carried per second in the audio stream, and effectively determines the range between the highest and lowest frequency sound in the file. The user interface may be intimidating, especially for those who have never used sound editing software before, but using it to reduce file size is fairly straightforward: The LAME encoder adds the ability to save files as MP3, both when you change the properties of an existing MP3 and when you create a new project to save as MP3. Click the X* on the two original tracks to delete them, leaving only the single mixed mono track. Another go-to tool used for audio compression is Audacity. Audacity Compressor Tutorial for beginners .Audacity Compressor Settings Explained. Digital Vision./Digital Vision/Getty Images. Using iTunes is an easy way to convert audio files, but not everyone is an Apple or iTunes user. Select the option to export the file as "MP3.". Step 1: Head on to download Audacity software over your existing system. The project's audio is lossless. Watch this video or read the post to learn how to compress your audio. To change the file's bitrate, select File from the menu, followed by Export Audio. Launch Audacity and drag and drop your MP3 file into the program. The software is available for most operating systems. For example, the 44.1 kHz setting produces CD quality audio, while 8 kHz sounds like audio over a telephone. Click Edit, Open, choose the file to compress and click OK. To adjust sampling rate, click Edit from the menu bar, followed by Preferences. This can also be used for compressing audio, here are the concrete steps: Download and install Audacity. Audacity is a popular open-source and cross-platform application used for recording and editing sounds. He now works as a reporter for a daily newspaper. Quinten Plummer began writing professionally in 2008. MP3. This is why we recommend using Audacity to compress an audio file. Navigate to the "Set Sample Format" heading and select a lower bit rate from the sub-menu (e.g., if your sampling format is set to 32-bit, select a lower bit rate, like 4-bit or 6-bit). Select Split Stereo to Mono from the list to split the single track into two mono tracks. Once the interface loads, tap on the “File” from the menu followed by “Open” and proceed with opt for the file you wish to compress. Once we have downloaded and installed it, we will open the application to begin the conversion process. Once added, go to File>Export. Select MP3 Files from the Save as Type drop-down, then click Options and select your desired bitrate from the Quality drop-down. A drop-down menu will appear. With the help of Audacity, you can make the files smaller. If you can stand a little decrease in the quality of your MP3 file, lowering the sampling and bit rates of your MP3 can help you fit your audio files in places where space may be limited, such as an online upload form or a memory card. At the same bitrate, files encoded in mono almost always offer higher audio fidelity than files encoded in stereo because the available data doesn't have to be split between two tracks. If you are talking about lossy file size compression, like MP3, save a project if you want to change the audio later. If you can stand a little decrease in the quality of your MP3 file, lowering the sampling and bit rates of your MP3 can help you fit your audio files in places where space may be limited, such as an online upload form or a memory card. If you can stand a little decrease in the quality of your MP3 file, lowering the sampling and bit rates of your MP3 can help you fit your audio files in places where space may be limited, such as an online upload form or a memory card. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. If you can't send large audio files on WhatsApp, follow the below guide to compress audio files using Audacity. Converting stereo sound to mono doesn't directly affect the file size of an MP3 file, but it can improve the audio quality of the finished product. Higher bitrates usually equate to higher quality audio tracks, but also larger files. Below 128 kbps, the chances of distortion and the loss of dynamic sound range increase -- at 8 kbps, the audio may be garbled beyond recognition. A free online audio compressor to reduce your audio and music file size by reducing bitrate and changing encoding (MP3, AAC, OPUS...). A drop-down menu will appear. With the help of Audacity, you can make the files smaller. The graph shows the input level along the bottom (horizontal axis) and the output level scale on the left (vertical axis) to illustrate the dynamic range compression effect. While MP3 files are already highly compressed files, sometimes it's necessary to chop the size down just a little more. Step your file's sampling rate down (e.g., if the sampling rate is set to 44100 Hz, you could step it down to 22050 Hz). Audacity has plenty of features for recording and editing audio, but it also compresses audio files. 3. He has more than six years in the technology field including five years in retail electronics and a year in technical support. If you don't have the LAME MP3 audio codec on your computer, you will need to download a copy of the LAME DLL before you can export your MP3 file from Audacity (see Resources section). MP3 degrades every time you re-export. While MP3 files are already highly compressed files, sometimes it's necessary to chop the size down just a little more. While Audacity can be used to edit existing MP3s and export them to other formats out-of-the-box, it doesn't natively create MP3s. With Audacity, any MP3 file's encoding and sampling options can be adjusted to reduce its file size and make it easier to share and enjoy on your favorite devices. Drag multiple audio files to the "Choose Files" section. Audacity saves an Audacity project (AUP) or exports an audio file. Plummer gained his experience in music by producing for various hip-hop acts and as lead guitarist for a band. The file size of an MP3 audio file depends primarily on how it's encoded and sampled. The graph will change as you adjust the Threshold and Ratio sliders, reflecting those settings. Download Audacity and install it. This audio compressor supports many audio formats such as MP3, M4A, AAC, OGG, OPUS, AMR, WAV, WMA, AU, FLAC, MKA, AIFF or RA etc. The file size of an MP3 audio file depends primarily on how it's encoded and sampled. To compress audio files we can use a free program like Audacity, which we can download from its website. Click on the name of your MP3 file, located in the top-right corner of the imported file. The graph does not reflect changes in any of the other controls, although they all affect how the audio sounds after applying the effect. With Audacity, any MP3 file's encoding and sampling options can be adjusted to reduce its file size and make it easier to share and enjoy on your favorite devices. Audacity sets projects with a default sampling rate of 44.1 kHz for optimal quality, but lower frequency settings can often reduce overall file size.