Seven Bel GmbH products

The Sound Scanner represents a pioneering advance in the realm of acoustic imaging technology, leveraging the novel 'Sound Field Scanning' technique. This acoustic camera innovatively segments the sound field using merely five physical microphones, which are translated via advanced algorithms into 400 virtual positions to gauge intricate soundscapes. This is achieved with compact, wireless, and battery-operated hardware that significantly reduces data processing needs compared to conventional systems. The Sound Scanner is adept at pinpointing sound sources across frequencies from 125Hz to 44kHz and offers immediate acoustic imaging results sent directly to mobile interfaces through cloud processing. Its modular design supports flexibility, allowing the integration of additional sensors for extended frequency applications, making it suitable for a variety of environments from outdoor settings to industrial labs. Users can perform detailed post-processing with specialized software, offering unprecedented usability in multiple acoustic measurement scenarios.

The ultra-lightweight, omnidirectional dodecahedron speaker has been specifically designed for sound insulation testing between rooms according to ISO 3382-1, ISO 3382-2, ISO 140-4, and ISO 16283-1. With a weight of only 5 kg and a sound power level of 120.5dBC, it is one of the lightest and most efficient speakers, perfect for supporting building and room acoustic measurements.

The maintenance-free tapping machine is qualified for measuring impact sound insulation according to ISO 16283 and ISO 10140. With a weight of only 10.6 kg or 12.7 kg including the battery, it is one of the lightest and most effective tapping machines in the market. A special technical highlight is the electromagnetic lifting system of the hammers, which allows precise control of the drop time and high accuracy in impact sound excitation – an invaluable advantage over purely mechanically controlled systems.

The portable ultrasound transmitter with a diffuser for hemispherical directivity is the ideal complement to the Sound Scanner P12 for locating leaks in containers and cabins with high tightness requirements. Battery operation and remote control enable convenient operation of the sound source in enclosed containers and cabins.