How to Enable Software Playthrough in Audacity

Configuring software playthrough in Audacity allows you to monitor your live microphone or instrument input directly through your headphones while recording. This guide provides a straightforward walkthrough on how to enable software playthrough via the application preferences or the top menu, along with essential tips to avoid audio feedback and reduce latency during the monitoring process.

Method 1: Enable via Preferences

1. Open Audacity.
2. Open the Preferences window:
   • Windows/Linux: Click Edit in the top menu bar and select Preferences (or press Ctrl + P).
   • macOS: Click Audacity in the menu bar and select Preferences (or press Cmd + ,).
3. In the left-hand navigation pane, select Recording.
4. In the Options section, check the box labeled Software playthrough of input: listen while recording or monitoring new track.
5. Click OK at the bottom right to save your settings.

Method 2: Enable via the Transport Menu

1. Click on Transport in the top menu bar.
2. Hover over Transport Options.
3. Click Software Playthrough (on/off) to toggle the checkmark on.

How to Test and Monitor Without Recording

Once enabled, you can monitor your levels without creating a new recording:

1. Locate the Recording Meter toolbar (the microphone icon with green meter bars).
2. Click the meter where it says Click to Start Monitoring.
3. Speak into your microphone; you will now hear your input through your default playback device.

Crucial Setup Considerations

• Always Wear Headphones: Never use software playthrough with external speakers turned on, as this will route your microphone back into your speakers and create an immediate, high-pitched feedback loop.
• Latency (Audio Delay): Software playthrough routes your audio through your computer's operating system and sound card drivers before outputting it. This causes a slight delay (latency). If the delay makes it difficult to speak or sing, consider using a hardware audio interface with a built-in "Direct Monitor" feature instead.