PATENT CLAIM ANALYSIS

Application Number: 16362156
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["379", "406080"]

Abstract:
The invention relates to an adaptive filter unit, in particular for being used as an echo canceller, comprising a first filter input, configured to receive a first electric audio signal, indicative of a first audio signal A(t), a second filter input, configured to receive a second electric audio signal, indicative of a second audio signal B(t), a processor and a filter output. The processor is configured to calculate and provide audio estimation data X(f n , A(t 1 , . . . , t M(fn) )) in the frequency domain; to calculate a transformed second audio signal Y(f n , B(t)), formed by a transformation of the second audio signal B(t) into the frequency domain; and to calculate a filtered audio signal by subtracting delayed audio estimation data from the transformed second audio signal, wherein the delayed audio estimation data is provided by a memory unit of the adaptive filter unit, which is arranged to provide a data exchange with the processor, and wherein the delayed audio estimation data comprises a frequency dependent time delay compared to the transformed second audio signal.

Claim (Index 14):
A hearing device, comprising\n an audio input interface, configured to receive an audio signal, to convert the audio signal into a first electric audio signal and to provide the first electric audio signal; a speaker unit, configured to receive the first electric audio signal and to convert the first electric signal into a perceivable audio output; a microphone unit, arranged and configured to convert an acoustic tone into a second electric audio signal and to provide the second electric audio signal; an adaptive filter unit according to  claim 3 , configured to receive the first electric audio signal and the second electric audio signal, and which is further configured to filter the second electric audio signal based on the first electric audio signal and to determine a processed audio output signal; and an audio output interface, configured to provide a device output signal, indicative of the processed audio output signal.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 99.0
- Lexical Diversity: 2.94667
- Patent Class: 379.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15655295', '12668329', '15264835', '12506983', '15608447']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4739695541029852
- 35 USC 102 Novelty (BERT): 0.5285761724147836
- Combined Prediction Score: 0.479430215934165
- Mean Citation Score: 241.608656
- Max Citation Score: 363.2111
- Similarity Product: 321.7082767724037

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

Dataset: test