Benchmark Problems for Acoustical Parameters

Check: B-11

Find values of reverberation time (T) from following impulse response.

b11.wav (RIFF waveform, 16 bit signed integer, monoral, sampling frequency: 48000 Hz)
b11.fb (floating-point binary (little endian), 96000 data, monoral, sampling frequency: 48000 Hz)
b11_wf

Note

This Benchmark problem aims to find appropriate reverberation time from an impulse response which has heavy background noise. This benchmark's impulse response was based on a white noise and modified it as exponential decay made to hav about 1.5 seconds of reverberation time. Additionally, this impulse response was overlapped with white noise for background noise.
Explication of this benchmark problem was written in Column 1: Relationship between background noise and reverberation time. Please read it.

Reverberation Time: T (s)

	125	250	500	1k	2k	4k	Regression interval
Hoshi	1.53	1.60	1.63	1.57	1.58	1.59	-5 ~ -35 dB (T₃₀)
Okubo	1.62	1.63	1.73	1.61	1.63	1.65	-5 ~ -25 dB (T₂₀)
Miyazaki	1.63	1.63	1.74	1.62	1.63	1.65	-5 ~ -25 dB (T₂₀)
Yairi	1.62	1.65	1.71	1.65	1.65	1.67	-5 ~ -25 dB (T₂₀)