Patent No. 10,950,253

Description:
 This patent application contains input acoustical transducer (e.g. microphone), output acoustical transducer (e.g. speaker), audio delay circuit, and interface electronics. The amplification factor should be result in sounds loud enough to be perceived by the wearer, and low enough to not be noticed by nearby others (say, 1m away), not self-feedback with positive overall gain. The sound fidelity does not need to be particularly good. Rejection of sounds other than the user's voice is desirable, but not critical. Compact implementations could be potentially embedded within jewelry such as brooches, earrings, tie-clips and eyeglasses. 

Abstract:
A vocal feedback device comprising: a microphone; a delay circuit electrically connected to the microphone; and a speaker electrically connected to the delay circuit. The delay circuit is configured to: convert vocal utterances received at the microphone into an electrical signal; impose a time delay before transmitting the electrical signal to the microphone; after the time delay, transmit the electrical signal to the speaker; and convert the electrical signal to an audio signal using the speaker, the audio signal being a replication of the vocal utterances.


UTEP Docket No: 2018-004