Benchmark Problems for Acoustical Parameters

Check: B-22

Find values of C₈₀ from following impulse response.

b22.wav (RIFF waveform, 16 bit signed integer, monoral, sampling frequency: 48000 Hz)
b22.fb (floating-point binary (little endian), 48000 data, monoral, sampling frequency: 48000 Hz)

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Note

This Benchmark problem aims to check the procedure of time-windowing and octave band filtering. This benchmark's impulse response was based on a white noise and modified it exponentially made to have about 0.5 second reverberation time. Additionally, this impulse response was added an large energy before 80 ms for detecting the difference of procedure of windowing and filtering.

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Clarity: C₈₀ (dB)

	125	250	500	1k	2k	4k
Hoshi	13.41	11.19	9.69	8.60	9.35	10.24
Miyazaki	13.42	11.14	9.73	8.45	9.38	10.20