This example shows a coffee machine in operation, measured with the circular LMS Test.Lab High Definition Acoustic Camera array inside a semi-anechoic chamber. The time signal (figure 9) shows a number of distinct, sequential, stationary phases. First, coffee beans are crushed (figure 10, left) while water is heated in the back of the machine (right). Then the coffee machine operates some mechanical switches (figure 11, left), and finally pours coffee into the cup (right).
Figure 9: different phases of making coffee…
Figure 10: Crushing of the beans (left) and heating (right)
Figure 11: Switching (left) and coffee pouring (right)
More information on:
- Sound Source Localization technologies
- Acoustic beamforming technique and near-field focalization
- Acoutics holography technique
- Spherical beamforming technique for interior sound source localization
