GBT4963

GBT4963, Total:2 items.

The international standard classification for "GBT4963" includes: Noise with respect to human beings .

The Chinese standard classification for "GBT4963" includes: Acoustic Measurement .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

• GB/T 4963-2007 Acoustics—Normal equal-loudness-level contours
• GB/T 4963-1985 Normal equal-loudness contours for pure tones under free field listening conditions

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