PATENT CLAIM ANALYSIS

Application Number: 15757927
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["381", "303000"]

Abstract:
A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing a left compensation filter FL, and a right compensation filter FR, and during playback applying the left and right filters to left and right channel inputs. According to the invention, a target response in the listening position is simulated, and the left and right compensation filters are designed to filter transfer functions based on the simulated target function multiplied by an inverse of the left/right frequency responses. By relying on a simulated target instead of relying on an empirical approach, the general impact of a room can be more accurately captured by the target functions.

Claim (Index 28):
An audio system including:\n at least a left and a right loudspeaker arranged in a listening room; at least one microphone arranged in a listening position; a signal processing system for compensating for acoustic influence of the listening room on an acoustic output from the loudspeakers, said signal processing system being configured to:\n apply a test signal to the left speaker, determine a power average based on a signal measured in the microphone, and determine a left frequency response LP L  between the test signal and the power average, \n apply a test signal to the right speaker, determine a power average based on a signal measured in the microphone, and determine a right frequency response LP L  between the test signal and the power average, \n design a left compensation filter F L , and \n design a right compensation filter F R ; and \n a filtering system configured to:\n during playback, apply the left compensation filter to a left channel input, and applying the right compensation filter to a right channel input, \n wherein the signal processing system is provided with a simulated target function H T  representing a simulated target response in the listening position, and in that the signal processing system is configured to design the left compensation filter F L  to have a left filter transfer function based on the simulated target function H T  multiplied by an inverse of the left frequency response, and design the right compensation filter F R  to have a right filter transfer function based on the simulated target function H T  multiplied by an inverse of the right frequency response.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.04167
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15757939', '15522699', '12159897', '11026773', '11531624']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7061916275798505
- 35 USC 102 Novelty (BERT): 0.5706549147801375
- Combined Prediction Score: 0.6926379562998792
- Mean Citation Score: 240.02357800000004
- Max Citation Score: 447.81033
- Similarity Product: 421.99066136366486

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