US 11,835,625 B2
Acoustic-environment mismatch and proximity detection with a novel set of acoustic relative features and adaptive filtering
Francesco Nespoli, London (GB); Patrick Naylor, Reading (GB); and Daniel Barreda, London (GB)
Assigned to Microsoft Technology Licensing, LLC., Redmond, WA (US)
Filed by NUANCE COMMUNICATIONS, INC., Burlington, MA (US)
Filed on Mar. 15, 2022, as Appl. No. 17/695,444.
Prior Publication US 2023/0296767 A1, Sep. 21, 2023
Int. Cl. G01S 5/10 (2006.01); G01S 7/527 (2006.01); G01S 15/10 (2006.01)
CPC G01S 15/101 (2013.01) [G01S 7/5273 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of performing distance estimation between a first recording device at a first location and a second recording device at a second location, comprising:
estimating an acoustic relative transfer function (RTF) between the first recording device and the second recording device for a sound signal; and
estimating a distance between the first recording device and the second recording device based on the acoustic RTF.