Professional software for testing hydrophone, transducer, and transceiver 

Hydroacoustics is the study and application of sound in water. For Volue Industrial IoT this is all about how to create innovative- and high-quality solutions for doing underwater recording, analysis, signal processing and transmission of underwater sound, as well as combinations of these. Most of these systems focuses on different ways to simulate the underwater acoustics from naval vessels or sonar echo, as well as doing high-quality underwater recordings.

The customers in this market segment often belong to the defense as well as research and teaching institutions. We tailor or customize deliveries according to customer needs.

Systems for sonar testing-, calibration- and training

In an active sonar test, the system returns an echo on a received sonar pulse in the water, with an operator-selected very accurate time delay and any optional additional effects such as Doppler shift, highlights, modified target strength etc. Time delay simulates distance between sonar and underwater target (e.g. a submarine), Doppler shift simulates speed, and highlights simulate physical form factor to the target.

During passive sonar tests, sound is emitted into the water. One application is to send wideband noise to simulate the signature sound of a naval vessel, for instance imitate propeller noise. Another application is to simulate sonar pulses from a ship-mounted active sonar. 

Tumiki supplies systems for underwater recording, including analysis in frequency domain (FFT) and time domain, peak level etc. Such recording systems may be single channel (one hydrophone) or multi-channel (array of multiple hydrophones).

Newly modernized core-technology

Tumiki developed the latest generation “state-of-the-art” processing and DSP electronics unit for underwater acoustics systems, offers new possibilities for real-time digital signal processing (DSP), and the sound quality has been greatly improved by faster sampling rate and improved audio resolution (bit-depth). The platform is Linux-based and utilizes a powerful FPGA as central component in the signal processing chain.