Invention Grant
- Patent Title: Passive sub-audible room path learning with noise modeling
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Application No.: US17661582Application Date: 2022-05-02
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Publication No.: US11581862B2Publication Date: 2023-02-14
- Inventor: Roger R. Darr , Matthew Easley
- Applicant: THAT Corporation
- Applicant Address: US MA Milford
- Assignee: THAT Corporation
- Current Assignee: THAT Corporation
- Current Assignee Address: US MA Milford
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: H03G3/24
- IPC: H03G3/24 ; H03G5/16 ; H03G3/30 ; H03G3/32

Abstract:
Frequency domain compensation is provided for spectral impairment resulting from the audio path characteristics for a given audio device in a given listening space. Selected segments of an audio stream are recorded at a listener position to measure degradation in the audio path and to update compensation filter characteristics of the audio device. Recorded transmitted and received audio sequences are aligned based and compared in the frequency domain. The difference between the aligned transmitted and received sequences represents the frequency domain degradation along the acoustic path due to the speaker, the physical attributes of the room, and noise. A dynamically updated noise model is determined for adjusting compensation filter characteristics of the audio device, which can be updated during use of the audio device. A compensation curve is derived which can adapt the equalization of the audio device passively during normal usage.
Public/Granted literature
- US20220352860A1 PASSIVE SUB-AUDIBLE ROOM PATH LEARNING WITH NOISE MODELING Public/Granted day:2022-11-03
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