Office Settings & Configuration

How to Use Computer Audio with Word Dictate for Transcription

Olivia Miller Sep 30, 2026 869 views

Question details

The user needs to transcribe internal system audio using the Dictate feature, but it currently only captures external microphone input.

How to Route Computer Audio to Word Dictate for Transcription

Product: Microsoft Word
Device & OS: Windows
Scenario: Attempting to transcribe media or an audio file playing directly on the computer using the built-in Dictate tool.
Observed behavior: The Dictate feature captures speech from a physical microphone but fails to detect and transcribe internal computer playback, despite microphone permissions being active.

Before you start

Ensure your computer's audio drivers are up to date and that you have administrator privileges to modify Windows sound and microphone privacy settings.

Solution 1Recommended

Enable and Set Stereo Mix as the Default Recording Device

Stereo Mix allows your computer to route its output audio directly into its microphone input, enabling Word to hear what the computer is playing.

By default, Windows uses your physical microphone for recording. To capture internal audio, you must activate the hidden Stereo Mix device and set it as the primary input source for your system and Microsoft Word.

Open Sound Settings

Press the Windows key + R to open the Run dialog, type 'mmsys.cpl', and press Enter to open the Sound Control Panel.

Show Disabled Devices

Navigate to the 'Recording' tab, right-click on any empty space in the device list, and check 'Show Disabled Devices'.

Enable Stereo Mix

Locate 'Stereo Mix' in the list, right-click it, and select 'Enable'. Right-click it again and select 'Set as Default Device'.

Select Device in Word

Open Microsoft Word, click the 'Dictate' button on the Home tab, click the gear icon (Settings) in the Dictation toolbar, and ensure the microphone is set to 'Stereo Mix'.

Enable and Set Stereo Mix as the Default Recording Device

Audio Routing Complete: Word Dictate will now transcribe the audio actively playing on your computer's speakers or headphones.

Solution 2

Verify App Permissions and Test Audio Path

Windows privacy settings may block desktop applications from accessing the audio input, even if Stereo Mix is enabled and configured correctly.

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Frequently Asked Questions

Why is Stereo Mix missing from my Windows recording devices?

Stereo Mix is often hidden by default. You must right-click an empty space in the Recording tab of your Sound settings and select 'Show Disabled Devices'. If it still doesn't appear, you may need to download and update your computer's audio drivers, specifically the Realtek High Definition Audio drivers.

Can I use Word Dictate for pre-recorded audio files?

Word Dictate is primarily designed for live speech via a microphone. To transcribe a pre-recorded file using Dictate, you must route the system audio using Stereo Mix or a virtual audio cable. Alternatively, the 'Transcribe' feature in Word for the web allows direct uploading of audio files.

How do I ensure Word Dictate is listening to the correct audio source?

Click the Dictate button in Word, then click the gear icon (Settings) on the floating Dictation toolbar. Under the 'Microphone' dropdown, select the specific device (such as Stereo Mix) that is configured to capture your computer's playback.

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