PATENT CLAIM ANALYSIS

Application Number: 16073265
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-02
Patent Classification: ["704", "233000"]

Abstract:
Methods and systems employing an internal microphone and an external microphone of a headset to capture own voice content in the presence of noise, extract the own voice content from background noise (by performing noise reduction on the microphone outputs to generate a noise reduced signal indicative of the own voice content), and optionally also perform voice activity detection to identify segments of own voice presence or absence. In some embodiments, the external microphone is employed to capture the own voice content, the internal microphone signal is employed to infer the noise captured by the external microphone, and the inferred noise is subtracted from the external microphone signal to generate the noise reduced signal. Aspects include methods performed by any embodiment of the system, and a system or device configured (e.g., programmed) to perform any embodiment of the method.

Claim (Index 1):
A method for capturing sound using a headset having at least one earpiece, wherein a user's ear canal is closed by the earpiece, the earpiece including an external microphone and an internal microphone, wherein the internal microphone is positioned in or on an inside portion of the earpiece and the external microphone is positioned in or on an outside portion of the earpiece, and wherein the internal microphone is located in a chamber formed by the earpiece and an ear of the user, said method including steps of:\n (a) in the presence of sound including own voice content and noise, generating an external microphone signal indicative of the sound as captured by the external microphone, and generating an internal microphone signal indicative of the sound as captured by the internal microphone, where the own voice content is indicative of at least one vocal utterance of the user of the headset; and (b) performing noise reduction on the external microphone signal, including by filtering the internal microphone signal to generate a filtered signal indicative of at least some of the noise as captured by the external microphone, and generating a noise reduced signal indicative of the own voice content by subtracting the filtered signal from the external microphone signal, wherein the step of filtering the internal microphone signal to generate the filtered signal corresponds to application of a transfer function, InvP(z), to the internal microphone signal, wherein the transfer function, InvP(z), is equal to or at least substantially equal to an inverse of a transfer function, P(z), that represents filtering during transit through the earpiece to the internal microphone.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 95.0
- Lexical Diversity: 2.31818
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11502312', '15711793', '15728732', '14657604', '12170171']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3059395771848651
- 35 USC 102 Novelty (BERT): 0.4940637598601405
- Combined Prediction Score: 0.3247519954523927
- Mean Citation Score: 234.136918
- Max Citation Score: 251.17577000000003
- Similarity Product: 193.9952350080407

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test