Official documentation
Improve speech recognition with Voice access
Microsoft, Microsoft Support, 2026
Read the originalRead on October 16, 2026
- What it is
- Microsoft's help page for Voice Isolation and background noise removal in Voice access, including the one-time voice model download, where the processing happens and what is stored on the device.
- How much weight it carries
- Official Microsoft documentation with step-by-step setup and an FAQ. It describes intended behavior and gives no measured accuracy results; the limits it lists are Microsoft's own.
Facts taken from this source
- Microsoft says that deleting your voice recording for Voice Isolation in Voice access removes your voice signature from the device.
“Delete your voice recording: This removes your voice signature from the device.” (Improve speech recognition with Voice access, Voice Isolation settings)
- Voice Isolation can still pick up someone who speaks at the same time as you.
“If someone speaks at the same time as you (overlapping speech), Voice access may still occasionally pick up their voice alongside yours.” (Frequently asked questions: Can Voice Isolation separate my voice from multiple speakers?)
- Voice access offers three speech recognition options for different environments.
“Voice access offers three speech recognition options to help you get the best experience in different environments” (Improve speech recognition with Voice access: options)
- Microsoft says deleting your Voice Isolation voice recording removes your voice signature from the device.
“Delete your voice recording: This removes your voice signature from the device.” (Section Manage Voice Isolation)
- The Voice Isolation setup downloads a small model, which needs an internet connection.
“Before recording begins, a small download will start. You'll need an internet connection for this step.” (Set up Voice Isolation: Download the voice model)
- Voice Isolation stores a voice signature on the device and saves no raw voice recording.
“The model runs entirely on your device, and no raw voice recording is saved. ... Only a voice signature is created and stored locally.” (Set up Voice Isolation: Download the voice model)
- Microsoft says Voice Isolation needs a quick one-time setup so that Voice access can learn to recognize your voice.
“Voice Isolation requires a quick one-time setup so Voice access can learn to recognize your voice.” (Section Set up Voice Isolation)
- During Voice Isolation setup, Microsoft says you select your preferred microphone and read a paragraph aloud.
“Select your preferred microphone and begin reading the paragraph aloud.” (Section Set up Voice Isolation, Download the voice model)
- Microsoft says that if Voice Isolation does not perform as well as expected, you can record a new voice sample from the Manage Voice Isolation menu.
“If you feel Voice Isolation isn't performing as well as expected, you can record a new voice sample to improve the experience.” (Section Manage Voice Isolation)