Số hiệu tiêu chuẩn
CSN EN 20140-9
Tên tiêu chuẩn
Acoustics. Measurement of sound insulation in buildings and of building elements. Part 9: Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it (ISO 140-9:1985)
Ngày phát hành
1995-05-01
Tiêu chuẩn tương đương
EN 20140-9 (1993), IDT * ISO 140-9 (1985), IDT
Thay thế bằng
CSN EN ISO 10848-2:2006-11-01
Lịch sử ban hành
CSN EN ISO 10848-2:2006-11-01*CSN EN 20140-9
Từ khóa
acoustic measurement * noise control (acoustic) * noise control devices * buildings * Buildings * Acoustic measurement * Noise control (acoustic) * Noise control devices