Top 10 Best Free Audio Speed Changer to Speed Up or Slow Down Audio Files
Many times, a music file or an audio file is too slow, and adjusting the speed of the audio file helps to get a better result. Sometimes, I am sure you have heard audios where someone is speaking too fast, which makes it difficult to understand. That is where you need audio speed changer software or online audio speed changing tools. This post lists down the top ten speed changers for Windows, macOS, and online users. You should be able to change the speed of one or multiple audio files using these tools.
Top 10 Best Free Audio Speed Changer for Windows 10/Mac/Online
Some of these tools work on Windows, some are online tools, and two of them are for macOS. Make sure to choose based on your need.
- EaseUS Video Editor
- QuickTime Player
- WavePad Sound Editor
- Leapic Audio Editor
- Audio Speed Changer Online
- Conversion Tool
- Audio Trimmer Speed Changers
Online tools are the easiest to use, but they offer bare minimum features.
EaseUS Video Editor is a professional video editor that can edit both videos and audio files. When it comes to changing the speed of audio files, you can use this tool to change the speed of a single audio file or multiple audio files. Once the change is applied, you can also add background music to make it sound better if needed. Make sure to remove the non-essential part of the audio before changing the speed. That said, EaseUS Video Editor can also help you edit audio files easily to make it more appealing.
- Change speed up to 5x times
- Extract audio from video files, and then change the speed separately
- Export audio in MP3 and AAC format with a highest possible bitrate
- Increase or decrease sound with fade-in, and fade-out effects
- Combine multiple audios, and overlay audios on each other in a non-linear time zone
- Voice Over feature allows you to add voiceover to video
How to speed up or slow down the audio file with EaseUS Video Editor
Step 1. Open EaseUS Video Editor, and then add the audio files into the media section. If you are planning to speed up multiple files, add them together into the timeline, and then change speed one by one.
Step 2. Select the audio file, and then click on the pencil icon. It will reveal controls where you can change speed, use fade-in, fade-out, and change volume level. To change the speed, move the slider to left or right. You can change anywhere between 0.2X (slow down) to 5X (speed up). You can also use the edit tools to remove what is not needed.
Step 3. The last step is to export the audio in MP3 or AAC format. The time to convert will depend on the length and the number of audio files in the queue. To make sure you get the best quality, click on the configuration icon after you click on Export, and then select the highest bitrate, encoder, sample rate and more.
- Large range to speed up and slow down audio files
- High-quality output with the option to increase the volume
- Multiple files can be seamlessly merged using fade-in and fade-out
- Background music is free and can be combined with the primary audio
- Along with Audio editing, you also have access to video editing tools to create fantastic effects
- 300+ visual and audio effects to make a cinematic video
- Only available for Windows
Known for its versatility, Audacity is popular to play any audio format on the internet. The software also offers audio editing, recording, change in speed, tempo, noise reduction, and other features.
Once the file is loaded into the Audacity, click on the Effect menu, and then select change speed. Here you can set up speed multiplier, percentage change, configure vinyl rpm and set length for which the speed should be changed. It is probably the essential feature of the program. Confirm settings and then export the audio in a format that suits you best.
- Professional editing features for editing audio, which includes adding effects, analysis, tracks, and more
- Edit multiple audio files in one go which is useful for professionals
- Available on both Windows and macOS platforms
- The learning curve for beginners is big as too many control can be overwhelming
3. Quick Time Player
Quick Time Player comes pre-installed in macOS and enables you to change the speed of audio very quickly. Open the Audio-Video Control panel, and if you hold the "Option" button down while mouse-clicking, then you can increase the Forward or Reverse speeds in increments of 0.1x with speeds in the range of 1.0x through 1.9x having audio. You can also make use of the sliding gestures or Option key + arrow keys to change the speed of the audio files. Lastly, make sure to export as an audio file with changed speed.
- Free for all macOS users along with support for conversion of audio file
- Precise control to change the playhead to the exact place.
- You can choose to trim the audio to remove unnecessary parts of the audio.
- Only available for macOS users
iMovie is a fantastic editor on macOS, which can edit both audio and video files. Once you have the audio file in the timeline, click on the Speedometer on the right-hand side of the row. You will then be presented with a Speed setting and a Reverse setting with a checkbox next to it.
You can then manipulate the speed of a clip by clicking the speed drop-down menu and changing the speed from normal to Slow or Fast. Here you can choose to change the speed of the audio to a specific percentage. If you check the box next to the Reverse, your selected clip's audio and video will both be reversed.
- Brilliant audio and video editor which is available for free to macOS users
- You can change speed, reverse audio, and be specific about in terms of percentage
- Create a fantastic video
- Export only in M4A format
- No support for other audio formats such as MP3
- Available only for macOS
It's a feature-rich audio editor like Audacity, which offers waveform like the visualization of the audio files. You can edit part of full audio with editing options such as cut, copy, paste, and so on. To change speed, once the file is loaded, click on the Process menu, and then select Tempo. It will then reveal the change speed settings where you can use the slider to change it between 0.5X to 3X. You can listen to the preview before applying the change. You can then finally convert into Microsoft wave, MP3 audio, Ogg Vorbis, Monkey's Audio, Flac, Windows media audio, Wavpack, and more.
- Supports processes like click removal, DC offset correction, compressor, echo, etc
- Filters like moving average, high-pass, low-pass, band-pass.
- Special effects like flinger, phaser, chorus, gargle
- Record audio
- Includes tools like frequency analyzer, tone generator, noise generator, DTMF synthesis, text to speech
- Apply third party VST plug-ins
- Too many options will confuse novice users
- There is a learning curve for everyone
6. Wavepad Sound Editor
If you're looking for something simple, then this is an excellent portable audio editor. Like any other audio editing software, it offers waveform editing experience. If you want to edit, merge, or change sound speed, this is for you. What you will enjoy using this software is the big menus, which makes it easy to use. To change speed, switch to Effects menu, and then select the Speed. Here you can choose to change speed, pitch, and manage the profile. So if you do the same thing over and over again, creating a preset makes sense.
- Insert, delete, swap channels in an audio file
- Amplify, fade in and out, linear or logarithmic sound editing
- Option to perform reverse and inversion of audio files.
- Supports more than 40 different file formats
- Offers filters, sound effects along with the sound library
- Not possible to process files in batch
7. Leapic Audio Editor
Audio Editor Free is an all-in-one audio editor, converter, recorder, player, splitter, and joiner. A full set of effects and editing features are included for professional sound production. To change speed, click on effect, time stretch, and then choose to increase and decrease the speed of the audio file. Later you can export.
- Support filters such as Brand Pass Filter, High Pass Filter, Low Pass Filter to all or selected part of the video
- Apply effects like Amplify, Compressor, Delay, Equalize, Invert, etc.
- Merge audio files
- Add silence or noise.
- Save part of the audio file.
- Record audio from a microphone or any other available input device and save to WAV, MP3, WMA, OGG, VOX, RAW, etc. files.
- Too many options can confuse end-user if all they want is to change speed.
8. Audio Speed Changer Online
If all you want is to change the speed of the audio file, then it is best to choose an online tool. Audio Speed Changer is only to change the speed of audio if you are comfortable uploading files to their server. Once you upload the file, select the pitch change, playback speed, and lastly, the audio format.
- Supports local and online link for audio files
- Change pitch and speed
- Output in MP3 or M4A format
- No preview of how the files will sound when the speed is changed
- Limited output format
- No editing
9. Conversion Tool
Another no jargon audio changer tool which can convert speed or Tempo, transpose, and option to convert either using a time-based and a frequency-based (FFT) algorithm. It is useful for music training, transcription, instrument learning.
- Simple straight forward tool for those who need a speed changer.
- Connect to OneDrive or Dropbox if you have audio files available online
- Sends email notifications when the conversion is complete
- No option to preview, see the waveform and edit audio files
- You cannot merge or change the speed of multiple files together
- UI is cluttered with advertisements
10. Audio Trimmer Speed Changers
It is the best Audio Speed Changer tool among the bunch. Not only is it mobile-friendly, but it also creates almost zero clutter when changing the speed of the file. Once you upload the audio track, change the tempo settings, select speed, and click on the change speed button. The algorithm will process the audio and let you download it within seconds.
- Supports multiple formats including mp3, wav, m4a, wma and more
- Slow down the music if you are learning an instrument
- Both desktop and mobile-friendly user interface
- File size limit is up to 20 MB
- No way to hear a preview of the audio file
Now that you have seen software for Windows, macOS, and some online tools, it is clear that using EaseUS Video editor is the best way to go forward. It allows you to change the speed, add effects, and it supports multiple formats. On top of it, the user interface is straightforward to use. Even if you haven't used anything like this before, you will not have a problem.