Do you want to rap like your idols? Don't know how to use the tuning function? To do this, you need to use the automatic autotuning function of the Audacity software. You only need to download and install a few plugins in this digital audio data manipulation software and follow some instructions given to you in this article. Note that the methods explained to you in this article only work on a Windows operating system.
Part 1 of 2: turn on the automatic autotuning feature in Audacity
Step 1. Download Audacity for free
It is a software for recording and editing audio tracks that offers many functions to produce a wide variety of special effects. You can download it after clicking on the following link: Audacity on SourceForge. Keep in mind that Audacity's auto-tuning feature only works on a Windows system.
- Click on the large green "Download" button. You must wait at least 5 seconds before the download starts.
- When a small window appears with an inscription asking you what you want to do with the “Audacity-win-2, 1.0.exe” file, click on the “Save file” button. The number in the file name corresponds to the version of Audacity and that is why it might be different when you go to download.
- Double-click on the executable file (in.exe). You should find it in your downloads folder.
- Follow the on-screen instructions to install the software.
Step 2. Download the "authenticated" plug-in named "Audacity VST Enabler"
Thanks to this free program, you should have no difficulty in adding the automatic autotuning function to Audacity. You can get it by clicking on the following link: Free version of the Audacity autotuning plug-in produced by “Development Team”.
- Press the button marked with "vst-bridge-1, 1.exe".
- Click the "Save File" button.
- Double click on the executable file.
- Follow the on-screen instructions to install the program.
- When a small window appears asking you in which folder you want to install the program, select "C: \ Program Files (x86) Audacity \ Plug-ins" if it has not already been done automatically.
Step 3. Download the auto-tuning plug-in named “GSnap”
It is available for free, like Audacity and VST, and you can download it by clicking on the following link: GSnap - free plug-in. Although you can use Audacity software on OSX (Mac) or Linux, you do not have the option of installing this plug-in on those operating systems.
- Click on the button labeled "Download GSnap (for 32-bit VST hosts)".
- You will recover a file in "zip" (compressed) format.
Step 4. Manually install the "GSnap" plug-in
GSnap lets you produce special effects with Audacity's auto-tuning feature. Before you can use this plug-in, you must place its files in a specific Windows folder.
- Extract the compressed "zip" archive by right-clicking on it before selecting the "Extract to" line in the contextual menu that appears.
- Copy the "GSnap.dll" and "GVST License" files that were contained in the archive.
- Open the "Computer" directory and double click on the hard drive partition that is identified by the letter "C".
- Paste the two files into the "C: \ Program Files (x86) Audacity \ Plug-ins" folder.
Step 5. Relaunch Audacity to take the new effects into account
A small window asking you to save these effects should appear. You should find a line there that matches "VST" and another that matches "GSnap". Make sure the box in front of each of these lines is checked. Click on the "OK" button to validate the operation.
Part 2 of 2: use the automatic autotuning feature
Step 1. Open an audio file that contains the recording of your voice
You can edit any audio file in Audacity, but you should start by selecting one that contains a recording of your voice as you sing or speak in order to test the automatic autotuning feature. You can open a file by clicking on "File" in the menu bar then by selecting the line "Open" in the menu that appears. You can also record your voice directly into Audacity by clicking on the button identified by a red circle at the top of the software interface.
- You should sing relatively "loud" because the auto-tuning feature compares and adjusts the curve of your voice with that of a calibration melody. If your voice curve is relatively "flat" like when speaking, Audacity will not be able to compare it to a singing voice.
- You must have a microphone plugged into your computer to be able to record your voice. For the best quality voice recordings, choose a microphone that plugs into a USB port.
Step 2. Highlight the part of the curve you want to tune
To do this, click on the start of this part and drag the cursor to the right. The part of the curve that interests you is then colored blue.
You must use the selection tool to be able to perform this "click and drag". This tool is identified by an “I” on a small square button at the top of the Audacity user interface
Step 3. Open the "GSnap" plug-in window
To do this, click on “Effects” in the menu bar and select “GSnap” in the menu that appears.
Step 4. Click on “Select a scale” and choose a key
The tuning function will automatically configure the notes to fit into the scale. If you do not choose the correct key, tuning will not give good results. To determine the correct key for a song, search online or try to find it by ear by playing a note that does not degrade along the tuned curve.
- After choosing the key, check the “Fill threshold” box.
- You can change the key as many times as you want, which allows you to do a lot of experimentation.
Step 5. Make adjustments on each button to set thresholds for automatic autotune
Although you can make a multitude of settings with these knobs, choose those that allow you to get “standard” sound after tuning. For example, make the following settings:
- 40 Hz for the minimum frequency,
- 2000 Hz for the maximum frequency,
- -80 dB for the noise threshold,
- 1 for speed,
- 100 for the threshold,
- 1 ms for attack and release times.
Step 6. Click on the “Apply” button to start the automatic autotune of your voice
Make sure your voice curve is still highlighted (blue). If not, you can highlight it again without changing your settings.
Step 7. Click the round button with a green arrow to listen to your tuned voice
If you don't like the result, change the settings, hit the “Apply” button again, then listen to the new song that's tuned in. When you have finished processing your voice, click on the “Save Project” line in the “File” menu to save your tuned voice to a file.
Step 8. Customize the auto tuning function
Experiment with many settings to find the ones that produce the sounds you want. To get good results, follow the tips given below.
- Set high Attack and Release times for a natural voice.
- You can also achieve a more natural voice by adding "vibrato".
- If you want to avoid a voice with robotic accents, set the threshold to a low value.
- Make sure that the key is not too far from the notes of your voice so that the autotuning of your voice is not too noticeable.