PATENT CLAIM ANALYSIS

Application Number: 16035903
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["381", "318000"]

Abstract:
Provided is a hearing aid including a receiver, a microphone, an adaptive filter estimating a feedback transfer function from the receiver to the microphone, a subtractor, a hearing aid processor, a first whitening filter, a second whitening filter having a whitening filter coefficient identical to that of the first whitening filter, a coefficient updater, and a controller controlling the adaptive filter and the first and second whitening filters. The controller updates and saves, as a stabilization coefficient, the coefficient of the adaptive filter in a condition in which the autocorrelation of the first signal is low, determines the presence or absence of a change in the feedback transfer function based on the coefficient of the adaptive filter and the stabilization coefficient, and performs, when it is determined that the feedback transfer function has changed, the control in order that effectiveness of whitening by the first and second whitening filters is reduced as compared to that when it is determined that the feedback transfer function does not change.

Claim (Index 5):
The hearing aid according to  claim 1 , wherein\n each of the whitening filters is an adaptive lattice filter with a predetermined number of stages, and each of the whitening filter coefficients is a reflection coefficient of the adaptive lattice filter.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 95.0
- Lexical Diversity: 2.73134
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14791959', '14477126', '14315115', '13872590', '09409163']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7284478452044976
- 35 USC 102 Novelty (BERT): 0.4969558471549421
- Combined Prediction Score: 0.705298645399542
- Mean Citation Score: 239.426784
- Max Citation Score: 248.49367
- Similarity Product: 187.61578562011425

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