Benchmark Problems for Acoustical Parameters

Check: B-23

Find values of C₈₀ from following impulse response.

b23.wav (RIFF waveform, 16 bit signed integer, monoral, sampling frequency: 48000 Hz)
b23.fb (floating-point binary (little endian), 432000 data, monoral, sampling frequency: 48000 Hz)

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Note

This Benchmark problem aims to check the calculation procedure of C₈₀. This impulse response has 8.0 seconds of time length and some level of back ground noise is covoluted. The background noise level after 80 msec affects the C₈₀ value.

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Clarity: C₈₀ (dB)

	125	250	500	1k	2k	4k
Hoshi	11.71	9.63	8.67	7.80	8.58	9.17