8 Best Free Audio Speed Changer Software For Windows

Here is the list of best free audio speed changer software for Windows. These audio speed changer software let you change audio or Tempo speed of sound files. The ability to change audio speed can be very handy. For instance, musicians can slow down songs to learn fast lyrics and DJ can sync tempos for dance mixes. These software change the audio speed either by changing tempo or by stretching/compressing the time duration. Most of the listed software are audio editors, hence they provide lots of handy editing tools, like Mix and Render, Effects, Amplify, Fade In, Fade Out, etc. There are numerous Audio Editors, but only a few of them have the capability to change audio speed. So, I have compiled this list of free software that can change audio speed.

These audio speed changer software give you some important features that help you before/after modifying the audio speed, such as:

• Time Scale:, It helps you to select a particular time frame of audio to change audio speed.
• Audio Graph: It helps you to see the changes made on audio.
• Preview: It lets you listen to the audio before saving the changes made on audio.
• Toggle Loop: It helps you analyze selected part of the audio better, by continuously playing it in the loop.
• You can also change audio speed for individual speakers (Left or Right speaker).

These audio speed changer software supports many audio formats, like WAV, MP3, MP2, WMA, AVI, RAW, MPC, AVI, etc. You can also convert audio format at the time of saving the audio files.

My favorite audio speed changer for Windows:

I prefer Audacity and AudioDope the most, as both of these software are feature rich and provide essential tools to change audio speed. Both of these software have many similarities, but they also have some minor differences. In Audacity, you get multiple options to change audio speed whereas in AudioDope you only get one option to change speed.

You can also check out the best free Audio Noise Reduction Software, Audio Editor With Synthesizer, Filters, Audio Recorder.

Audacity

Audacity is a free audio speed changer software for Windows. It is a very popular audio editor, as it provides all the essential audio editing tools. This audio speed changer supports lots of audio formats, namely, MP3, WAV, AIFF, OGG, etc. Once you are done with changing the speed of audio, you can save the modified audio file.

By using this software, you can easily change audio speed, by selecting the Change Speed option, which you can view inside Effects drop down menu. In Change speed option, you can change audio speed by changing the speed multiplier values. If you enter a value more than 1, then speed of audio will increase and entering a value less than 1 results in reduction of audio speed. You can also change audio speed by selecting the predefined Standard vinyl speed values. This software also let you view the current and new length of audio, before and after changing the speed of audio files. Apart from audio speed, you can also change pitch of audio files.

In this audio speed changer, you can select some part of the audio by using your mouse to make changes on that selected part of the audio. Apart from that, it also provides a clean graphical representation of audio files with added time scale to accurately modify the audio speed.

NOTE: Modifying the speed of audio effects both tempo and pitch of the audio.

AudioDope

AudioDope is a free audio editing software for Windows. This software can also be used as a free audio speed changer. You can use various audio formats, namely, WAV, MP3, OGG, FLAC, AVI, AC3 etc., with this software. After performing various editing or changing speed of audio, you can easily save them in same input format or in other available audio formats.

There are some simple steps to change the speed of audio. To change audio speed, select the process menu from the toolbar and go into tempo option. In Tempo option, you will see a slider and by moving that slider from left to right or vice-versa, you can increase or decrease the speed of audio. In this option, you can also preview your changes made on audio by clicking the preview button.

This software also lets you choose some or all part of the audio. So, you change speed of a part of the audio file or the entire audio file.

Naturpic Audio Editor

Naturpic Audio Editor is a free audio editing software for Windows. This software offers various features such as audio speed changer, audio conversion, recording, editing options etc. By using it, you can easily change audio speed of numerous audio formats, like: WAV, MPEG, WMA, OGG, VOX, AVI, RAW, etc.

In this software, an option called Time stretch is used to change the speed of audio file, you can view this option inside Effect menu. To change audio speed, go into Time stretch option, where you will find two features, namely, Preset and Stretching Rate. In Preset, you can choose different predefined Tempo speed to change audio speed. In Stretching Rate, you can move slider by dragging your mouse to change audio speed. Both of these options can also work together to give you more flexibility with the audio speed. Apart from audio speed, you can also change pitch of the audio and you can also convert audio format.

Leapic Audio Editor

Leapic Audio Editor is a feature rich audio editor, and is a very good free software to change audio speed. This audio speed changer supports some popular and some not so popular audio formats, like WAV, MP3, WMA, AVI, RAW, G.721, G723, etc.

To change audio speed, first click on Effect menu from the toolbar and then select Time stretch option. Inside Time stretch option, you can select different Tempo like: slow tempo 50%, slow tempo 90%, speedUp tempo 120% etc., to vary audio speed. Apart from this, you can also change audio speed by moving stretching rate slider. Both Tempo and Stretching rate can be changed together to get more flexibility with audio speed.

In this software, you can easily save your audio files in same input audio format as well as in different audio formats.

WavePad Sound Editor

WavePad Sound Editor is a sound editing software. But it also let you change audio speed of various audio formats, namely, MP3, DART, WV, WMV, MPEG etc. You can also save audio in different format then their native audio format, which is an added bonus.

In this software, you can easily change speed of audio by selecting the Speed change setting which you will view in the Effects drop down menu. In Speed change settings, you can change the speed of audio either by changing the time duration (in seconds) or by adjusting the audio speed (in percentage). You can also change speed and pitch of audio at the same time by using speed and pitch change option. In this audio speed changer, you can easily preview your audio after changing audio speed, pitch, tempo or any other setting. This preview option comes in handy if you don’t want to save the changes made on audio.

Apart from changing the audio speed feature, this software also has all the standard features, which you can find on any sound editor, like Audio sampling, trim, fade In, fade out, special effects etc.

Do note that the homepage of this software does not have the link to download free version, but you can get the free version from the download link that I have included below. The free version can be used for Non-commercial home use only.

EArt Audio Editor

EArt Audio Editor is a free audio editing software. This software can also be used as an audio speed changer. It has a setting known as Time stretch, which is used to change the speed of audio. Time stretch option has two features known as preset and stretching rate. By increasing/decreasing preset and stretching rate values, you can easily change audio speed. In this audio speed changer, you can change speed of a part of the audio file or the entire audio file. Apart from modifying the audio speed, you can also change pitch and chorus of audio.

As an audio editing software, it has many audio editing tools, like: Filter, Effects, View, and Play. Each of these settings have many sub settings to help you with editing. It also has an audio converter, which lets you convert audio file of one format into another format.

This music speed changer software has one shortcoming that it does not provide preview option. So you have to save the changes made on audio every time before listening the modified audio file. That’s why I have added this MP3 speed changer to a bit low in this list.

Expstudio Audio Editor

Expstudio Audio Editor is a free audio editing software for Windows. This software can also be used as a free music speed changer. The option that helps you to change audio speed is named as  Time stretch which comes under Effects menu. To change the speed of audio, first, you have to select some portion of the audio from audio sample graph and then speed up or slow down the tempo by selecting different tempo values.  But, in this software, you can only choose predefined tempo values, as it does not provide any option to enter tempo values manually.

This audio speed changer shows the audio in graphical representation with Sample Scale to better analyze the audio after editing it. To give more flexibility with the audio formats. This software supports many popular audio formats, like: MP3, VOX, WAV, AVI, etc. Apart from that, you can also convert audio files from one audio format to other audio formats.

Note: In this free version of Expstudio, you can only save audio in Uncompressed WAV and MP2 format.

Audio Pitch & Shift

Audio Pitch & Shift is a free audio speed and pitch changer software for Windows. This software provides some basic audio speed changing tools along with some handy editing tools, like Mixer, Effects, Chorus changer, Distortion, etc.

The option to change audio speed comes under Effects section. In the Effects section, you can view two options, namely, Pitch and Speed. Below Speed option, you can view a slider, and by moving that slider in upward or downward direction, you can easily change audio speed. You can also repeat the same process after selecting the pitch slider to change audio pitch. In this music speed changer, you can repeat audio continuously by using repeat loop option to analyze audio better after some modification.

This audio speed changer is very flexible with audio formats, as it supports many audio formats, namely, MPEG, WMA, WAV, OGG, MP3, etc. But you can only save your audio in WMA, WAV, and MP3 format.

Note: During testing, this software was unable to save audio in MP3 format as it requires MP3 encoder, which is a major let down as MP3 is one of the most popular audio format.