PATENT CLAIM ANALYSIS

Application Number: 15983313
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-11
Patent Classification: ["381", "071600"]

Abstract:
Audio devices and methods are provided for detecting instability in an associated feedforward audio processing system. A microphone provides a feedforward signal for processing by a feedforward filter. The processed signal may provide noise reduction and/or sound enhancement associated with the surrounding environment. The processed signal contributes to a driver signal provided to an acoustic transducer, e.g., a driver, to produce acoustic signals for a user. A processor is configured to detect an indication of instability in one or more of the signals, and to adjust a phase response of the feedforward signal path in response to detecting the indication of instability.

Claim (Index 16):
A headphone system comprising;\n an earpiece having a feedforward microphone configured to detect external acoustic signals and to provide a feedforward signal; a feedforward processor to process the feedforward signal to provide a feedforward driver component signal; an acoustic transducer to produce acoustic signals based upon a driver signal, the driver signal based at least in part upon the feedforward driver component signal; an instability detector configured to monitor for a signal indicative of an unstable closed loop between the acoustic transducer and the feedforward microphone; and a phase adjuster configured to adjust a phase of a transfer function associated with the feedforward processor in response to detecting the signal indicative of an unstable closed loop between the acoustic transducer and the feedforward microphone, the adjusted phase being a fixed bandwidth fixed gain phase adjustment.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 93.0
- Lexical Diversity: 1.85
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13655819', '13251725', '12766902', '12749935', '14832585']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.706175864189022
- 35 USC 102 Novelty (BERT): 0.4828610008432116
- Combined Prediction Score: 0.6838443778544411
- Mean Citation Score: 207.504594
- Max Citation Score: 232.257
- Similarity Product: 188.83517684412

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test