OMNIDIRECTIONAL SOUND SOURCE ROOM AND BUILDING ACOUSTICS The BAS001 Sound Source is designed to generate omnidirectional sound fields for making standard compliant measurements ASTM E2235), building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-4 ISO 140-3, ASTM E336, ASTM E90, DIN 55 210). The BAS001 is typically used to saturate a Used for ISO 140-4, ISO 140-3, ISO 3382, DIN55210, ASTM E90, E336, E2235, C426 compliant measurements High sound power level output quiet environments, like those in reverberation time applications. Acoustically Isotropic Source The included carrying and shipping case is designed to provide Available lightweight & compact amplifier (BAS002E/U) TYPICAL APPLICATIONS room with a uniform acoustic field. The available high-efficiency power amplifier has no fan for cooling, allowing measurements in dependable protection for the BAS001 dodecahedral speaker in demanding conditions for many years. Pairing the Larson Davis Model 831 sound level meter with Reverberation Time option (831-RT) aids you in multiple Room acoustics: In-situ reverberation time measurements architectural acoustics applications ranging from simple Building acoustics measurements Sound insulation Evaluation of the acoustic indexes for the transmission loss of horizontal or vertical partitions Sweep response technique performance, to calculating absorption coefficients for material performance. Most of the time, these measurements are dictated by various international standards. Model 831 measures the decays and then computes the reverberation time according to ISO 3382-2 or ASTM 2235-04 standards. When using the Interrupted Noise method, the Model 831 not only triggers the data acquisition, but its built-in Noise Generator can be used to drive the omni-directional sound source. Recent trends show that the Integrated Impulse method is gaining popularity and Model 831 handles the acquisition of the decays and the subsequent T20 or T30 calculations completely and with ease. IECEx IECEx

1/3 octave band sound power levels - The overall value is 119 dB re 1 pW Minimum and maximum shift of the directivity index as a function of frequency according to ISO 140 standard. Optional Accessories The BAS002 (left) and TRP023 (right) are the recommended accessories for the BAS001. ®LARSON DAVIS A PCB PIEZOTRONICS DIV. 3425 Walden Avenue, Depew, NY 14043-2495 USA Toll-Free in the USA: 888 258 3222 Phone: 1 716 926 8243 | Email: [email protected] Larson Davis offers a full line of noise and vibration measurement instrumentation such as Class 1 and 2 sound level meters, outdoor noise monitoring...