There are microphones that can capture whispers and even subvocalization: https://youtu.be/NvVbCqDgfCs?t=520

The one demo'ed in the video is BOYA BY-GM18CU (https://www.amazon.com/dp/B0BF969RVP)

That one captures whispers. I've heard other devices can dictate based on vibrations from your neck/chest.