How to Record Desktop Audio with Audacity: The Ultimate Guide

Have you ever wanted to save the audio from a YouTube video, capture a video game sound effect, or record both sides of a Skype conversation? As a long-time audio engineer and Audacity expert, I can tell you that recording your computer‘s audio output is an essential skill – and one that‘s easier than you might think!

Desktop audio simply refers to any sound that your computer plays through its speakers or headphones. This could be music from Spotify, a podcast in your browser, the ding of a notification, or a voiceover in a screencast. Anything you can hear, you can record.

And the best part? You don‘t need expensive software or equipment to do it. In fact, all you need is Audacity – a powerful yet beginner-friendly audio workstation that‘s completely free and open source. Over 100 million people have downloaded Audacity since its initial release in 2000, and it remains one of the most popular digital audio editors today.

In this ultimate guide, I‘ll walk you through exactly how to record pristine desktop audio in Audacity on Windows, macOS, and Linux. I‘ll provide step-by-step instructions with helpful visuals, explain the technical concepts in plain English, and share pro tips I‘ve learned over decades of audio engineering.

Whether you‘re a podcaster, musician, video editor, or anyone else who works with sound, you‘ll find this guide invaluable. So let‘s dive in and start capturing some high-quality computer audio!

Contents

• Introduction
• What You‘ll Need
• Recording Desktop Audio in Audacity for Windows 10 & 11
• Recording Desktop Audio in Audacity for macOS
• Recording Desktop Audio in Audacity for Linux
• Tips for High Quality Recordings
• Frequently Asked Questions
• Conclusion

What You‘ll Need

Before we get started, make sure you have the following:

• A computer running Windows 10/11, macOS, or Linux
• The latest version of Audacity installed (Download here)
• An audio interface or sound card that supports "loopback" or "stereo mix" recording (more on this later)
• A few minutes of audio you want to record (a song, YouTube video, etc.)

Got everything? Perfect, let‘s move on to the meat of this guide and see how to actually record desktop audio in Audacity.

How to Record Desktop Audio in Audacity on Windows 10 & 11

Windows makes it relatively easy to record your system sound due to the included Windows WASAPI audio host. WASAPI, which stands for Windows Audio Session API, allows applications like Audacity to access your audio device and capture its digital output directly.

Here‘s how to set it up:

1. Open Audacity, then click Edit > Preferences
2. In the Devices section, change the Host to "Windows WASAPI"
3. Set the Recording Device to whichever option ends with "(loopback)"
4. Click OK to close preferences

If you don‘t see the (loopback) device, you may need to enable "Stereo Mix" which allows recording the same audio that plays out your speakers. Here‘s how:

1. Right-click the speaker icon in your system tray and choose "Open Sound Settings"
2. Click "Manage sound devices" under Advanced sound options
3. Select the Recording tab, then right-click and choose "Show Disabled Devices"
4. Enable "Stereo Mix", then set it as your default recording device

With those settings in place, you‘re ready to record! Just press the red Record button in Audacity, then play the audio you want to capture. When you‘re done, hit Stop and you‘ll see the waveform of your recorded system sound.

One important thing to note – the WASAPI loopback device only records when audio is actively playing. If there‘s no sound, Audacity won‘t capture anything. So make sure your audio is playing before and during the entire recording.

How to Record Desktop Audio in Audacity on macOS

On macOS, capturing system audio requires an extra step – installing a small kernel extension that creates a virtual audio device. This device essentially splits your digital audio output so that it goes to both your speakers and a special "loopback" input that Audacity can record.

The extension I recommend is called BlackHole, and it‘s made by a company called Existential Audio. Don‘t worry, it‘s totally free and open source. Here‘s how to set it up:

1. Go to the [BlackHole download page](https://existential.audio/blackhole/) and enter $0 for the price, then your email address
2. Download and install the latest BlackHole pkg file
3. Restart your computer
4. Open the Audio MIDI Setup app (in Applications > Utilities)
5. Click the + button and choose "Create Multi-Output Device"
6. Check your built-in output (speakers or headphones) and BlackHole 2ch

By creating this Multi-Output device, your computer will send all audio to both BlackHole and your normal output. BlackHole then acts as a virtual recording device in Audacity.

To enable it, open Audacity‘s Preferences, go to Devices, and set the Recording Device to BlackHole 2ch. Now when you press Record, Audacity will capture a perfect digital copy of your desktop audio in real-time!

When you‘re finished, be sure to go back into Audio MIDI Setup, right-click the Multi-Output device and uncheck "Use this device for sound output". This will route your audio back to the built-in output only.

How to Record Desktop Audio in Audacity on Linux

Believe it or not, recording system audio in Audacity on Linux is easier than both Windows and macOS! If your distro uses the popular PulseAudio sound server (most do), then all you need is a handy utility called pavucontrol.

On Ubuntu or Debian-based systems, you can install pavucontrol from the terminal:

sudo apt update
sudo apt install pavucontrol  

Once you have it, the process to record desktop audio is simple:

1. Open Audacity and start a new recording (press the Record button)
2. While Audacity is recording, open pavucontrol
3. Go to the Recording tab
4. Find the Audacity application stream, then in the drop-down next to it choose "Monitor of [your sound device]" as the input

That‘s it! Audacity will now record a high quality copy of any audio that plays through your device. The pavucontrol utility simply takes the output stream and copies it to a special "monitor" input that Audacity can record.

When you‘re done, you can close pavucontrol and Audacity will continue recording all system sounds until you press Stop.

Operating System	Additional Software	Audacity Recording Device
Windows 10 & 11	None (Uses built-in WASAPI)	Speakers (loopback) or Stereo Mix
macOS	BlackHole audio extension	BlackHole 2ch
Linux	pavucontrol	Monitor of [your device]

As you can see, while the specifics vary between operating systems, the fundamental process is the same:

1. Route your desktop audio to a special "loopback" or "monitor" recording device
2. Set that device as the input in Audacity
3. Press record to capture the system audio!

With these techniques in your toolkit, you‘ll be able to record any sound that your computer makes with perfect clarity.

Tips for High Quality Desktop Audio Recordings

Now that you know the basics of recording desktop audio in Audacity, here are some pro tips to help you get the best possible recordings:

• Use a high quality sound card or audio interface if possible. The built-in audio on most computers is decent but can introduce noise and distortion.
• Set your Audacity project‘s sample rate to match your audio source. CD audio is 44.1 kHz, YouTube is usually 48 kHz. Go to Quality Preferences to change it.
• Always record in 32-bit float format for maximum quality and headroom. You can turn on 32-bit float recording in Quality Preferences.
• Disable Audacity‘s software playthrough (in Recording Preferences) to avoid hearing an echo of your audio while recording.
• For the cleanest recording, close any unnecessary programs and browser tabs that might make notification sounds.
• Do a test recording first and check your levels. Make sure the waveform is strong but not clipping (going above 0dB).
• If you‘re adding a voiceover later, clap or use a slate tone at the beginning of your recording to help sync the tracks.

Following these guidelines will ensure you get the highest quality audio every time, whether you‘re recording a video game stream, Skype call, or music from your media player.

Frequently Asked Questions

Before we wrap up, let‘s go over some common questions and issues people encounter when recording computer audio in Audacity:

Q: Why am I hearing my audio twice while recording?

A: You probably have Audacity‘s "Software Playthrough" enabled which causes a distracting echo. To turn it off, go to Edit > Preferences > Recording and uncheck "Software Playthrough".

Q: Why does my recorded audio sound choppy, robotic, or sped up?

A: This usually means your Audacity project‘s sample rate doesn‘t match the sample rate of your audio device. Go to Audacity‘s Quality Preferences and make sure the Default Sample Rate is set to the same rate as your system audio (usually 44100 or 48000 Hz).

Q: Why is there noise or static in my recording?

A: This could be caused by a few things – a bad cable, a ground loop, or simply a low quality audio device. Try using a different sound card or audio interface if you have one. You can also use Audacity‘s built-in Noise Reduction effect to clean up the recording afterwards.

Q: Do I need a special license to record copyrighted audio like music or YouTube videos?

A: Yes, in most cases you‘ll need written permission from the copyright holder to legally record and redistribute their audio. However, you can record copyrighted material for personal, educational, or fair use without a license. Always do your research and respect intellectual property laws.

Start Recording Amazing Desktop Audio with Audacity Today

There you have it – the ultimate guide to recording pristine desktop audio using Audacity on Windows, macOS, and Linux! You now have all the knowledge and techniques you need to capture any sound your computer can play.

To quickly recap:

• On Windows, use the WASAPI loopback device or enable Stereo Mix
• On macOS, install the BlackHole extension and create a Multi-Output device
• On Linux, use pavucontrol to monitor your audio device while recording

With a bit of practice and experimentation, you‘ll be recording crystal clear computer audio like a pro in no time! Whether you‘re grabbing a sound effect, streaming a video game, or interviewing a guest over Skype, Audacity makes it easy and affordable.

So what are you waiting for? Get out there and start capturing all the incredible sounds your computer has to offer! You can use your recordings in podcasts, music productions, YouTube videos, or simply save them for posterity. The possibilities are endless.

I hope you found this in-depth guide helpful and inspiring. If you have any other questions or tips to share, please leave a comment below. You can also reach me directly at [email protected]

Here‘s to amazing desktop audio recordings!

Cheers,

[Your Name] Audio Expert and Audacity Enthusiast