US 11,668,600 B2
Device and method for adaptation of virtual 3D audio to a real room
Liyun Pang, Munich (DE); Fons Adriaensen, Munich (DE); Song Li, Hannover (DE); and Roman Schlieper, Hannover (DE)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 18, 2021, as Appl. No. 17/205,916.
Application 17/205,916 is a continuation of application No. PCT/EP2018/075194, filed on Sep. 18, 2018.
Prior Publication US 2021/0231488 A1, Jul. 29, 2021
Int. Cl. G01H 7/00 (2006.01)
CPC G01H 7/00 (2013.01) [H04S 2420/01 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A device for estimating acoustic parameters, wherein the device is configured to:
record an acoustic signal;
estimate a frequency-dependent reverberation time in a lower frequency range based on the recorded acoustic signal;
extend the frequency-dependent reverberation time to a higher frequency range based on a predetermined model to obtain an extended frequency-dependent reverberation time;
synthesize a Binaural Room Impulse Response (BRIR) based on the extended frequency-dependent reverberation time;
estimate a mixing time based on the extended frequency-dependent reverberation time; and
synthesize the BRIR based further on the mixing time, wherein the synthesizing the BRIR based further on the mixing time comprises:
reshaping white noise or white Gaussian noise according to the extended frequency-dependent reverberation time to synthesize the late reverberation part;
truncating the late reverberation part according to the mixing time and a window function; and
combining a Head Related Transfer Function for a direct part and/or early reflection with the truncated later reverberation part to obtain an entire BRIR.