References

1. Air acoustics and noise protection

Measurements and assessment of environmental noise

• Measurement and evaluation of noise level on more than a thousand of different objects (catering, craft, industrial)
• Influence on environment of noise from helicopter landing place Lučko - Ježdovec, MUP RH, Zagreb
• Noise prediction and measurement along the proposed transport collector route up to the waste water treatment facility site Sisak (Hidroproject-ing; World Bank Project)

Measurements and estimate of noise on working post

• Measurement and evaluation of noise levels on working places on more than a hundred of different objects (Podravka, Kalnik, PBZ, INA, INA AGIP)

Noise levels prediction in ships working and accommodation premises

• Noise level predictions on several tenths of vessels

Noise and structural sound measurements in ships working and accommodation premises

• Measurement and evaluation of noise level on more than a hundred of different vessels
• Measurement and evaluation of noise level in working and living premises of drilling rigs for research of oil “Labin" (INA-AGIP)

Special acoustic measurements

• Sound power measurement of tunnel ventilators
• Architectural acoustic measurements in complex of Hrvatski radio (Croatian radio), Dom HRT
• Acoustical characterisation of materials

Air and impact sound insulation measurements on building constructions

• Measurements and assessment of sound insulation on several hundreds different objects (entertainment, craft, industrial)
• Measurements and assessment of sound insulation of building constructions on tenths of buildings
• Jack-up rig "Labin", Sound insulation measurements, CROSCO integrated drilling & well services co. Ltd.

Design and control of noise protection constructions

• Noise protection design for Holcim (Hrvatska) d.o.o., Koromačno, with noise mapping of existing conditions and action plan
• Noise protection design of air conditioning system and ventilation facilities of "Hrvatske Telekomunikacije", Radnička cesta, Zagreb
• Preliminary noise protection design of plant "SELK", Kutina
• Preliminary noise protection deign of plant ventilation system "Coca Cola"
• Consulting on construction projects of adaptation of numerous smaller objects (bakeries, printing facilities, shops, catering)

Noise mapping and noise abatement action planes

• Noise map on the territory of city of Varaždin

Consulting and education

• Organizing of shops for units of local self management on noise mapping (Istarska county, Dubrovačko – Neretvanska county )

Noise and vibrations monitoring on highways, airports and industrial facilities

• Noise level measurements on Zagreb-Split highway upon commissioning
• Environmental monitoring - noise level measurements on the Zagreb-Split highway
• Noise measurements on Dubrovnik airport, Ćilipi

2. Ultrasound and underwater acoustics

Development of ultrasound transducers and devices

• Ultrasound sensors for tank surveillance
• Ultrasound echo sounder for small ships
• Prototype of ultrasound homogenizator for liquid waste homogenization
• Prototype of ultrasound extractor for increasing of extraction of matter with reduction of waste materials
• Ultrasound atomizer for immunoprophylaxis of poultry diseases
• Neurosurgical endoscope contact ultrasound probes (so called ultrasound neurosurgeon knife)
• Use of high power ultrasound for emulsification of active coal in sense of protection of environment.
• Device for energetic ultrasound

Ultrasound measurement of mechanical constants

• Measurement of shear modulus on tenths of high power machine shafts (ship engines, turbine on hydro power plants etc.)

Output characteristics measurement of ultrasound medicine devices (surgical, physiotherapy and diagnostic devices)

• Characterization of ultrasound neurosurgeon knife

Complex ship system design (hydrographic, navigation, systems of underwater detection, classification and surveillance)

• Automated hydrographic system for inland waterway survey on river patrolling boat ORB 12
• Acoustic modem for underwater control
• Ray tracer and sonar range predictor