Wearing a mask muffles the wearer’s voice thus making it difficult for the wearer to communicate and be understood by others. This disclosure describes techniques to improve the output speech from a person that is wearing a mask. Per the techniques, a microphone and a speaker is provided (e.g., as part of the mask) and are configured to add missing frequencies to the speech. Missing frequencies/sounds are identified based on a comparison with normal speech of the user when the user is not wearing a mask and are added by outputting sounds from the speaker.
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N/A, "Face Mask with Microphone and Speaker for Speech Enhancement", Technical Disclosure Commons, (January 12, 2021)