Benchmark Problems for Acoustical Parameters

Check: B-12

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

b12.wav (RIFF waveform, 16 bit signed integer, monoral, sampling frequency: 48000 Hz)
b12.fb (floating-point binary (little endian), 96000 data, monoral, sampling frequency: 48000 Hz)
b12_wf

Note

This benckmark problem aims to find the reverbertion time from the an impulse response which has short data length for estimating reverberation time. This benchmark's impulse response was based on a white noise and modified it exponentially made to have about 3.0 seconds of reverberation time.
Explication of this benchmark problem was written in Column 2: Reading correct reverberation time from insufficient decay length. Please read it.

Reverberation Time: T (s)

	125	250	500	1k	2k	4k	Regression interval
Hoshi	3.02	3.14	2.89	2.91	2.89	2.93	-5 ~ -25 dB (T₂₀)
Miyazaki	3.00	3.15	2.89	2.89	2.92	2.92	-5 ~ -25 dB (T₂₀)
Okubo	3.02	3.14	2.89	2.91	2.89	2.93	-5 ~ -25 dB (T₂₀)