Bogen-Sound-Pressure-Chart-Level 电路图 维修手册.pdf

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1、Typical Ambient Noise Level Typical Environments Very Hi gh Noi se Hi gh Noi se Medi um Noi se Low Noi se 85- 95 dB 75- 85 dB 65- 75 dB 55- 65 dB Speech Almost I mpossi ble To Hear Speech i s Di f f i cult To Hear Must Rai se Voi ce to be Heard Speech i s Easy To Hear 95 dB 85 dB 75 dB 65 dB 55 dB C

2、onstructi on Si te Loud Machi ne Shop Noi sy Manuf acturi ng Pri nti ng Shop Assembly Li ne Crowded Bus/ Transi t Wai ti ng Area Machi ne Shop Shi ppi ng/ Warehouse Supermarket (Peak Ti me) Very Noi sy Restaurant/ Bar Bank/ Publi c Area Department Store Noi sy Of f i ce Restaurant/ Bar Supermarket Transportati on Wai ti ng Room Conversati onal Speech Doctors Of f i ce Hospi tal Hotel Lobby Qui et Of f i ce Very Qui et Restaurant/ Bar www.bogen .com 77 SYSTEM DESIGN GUIDE SO UN D PRESSURE L EVEL S CHART RadioFans.CN 收音机爱 好者资料库