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. 2014 Jan 23;14(2):1918–1949. doi: 10.3390/s140201918

Figure 3.

Figure 3.

The basic hardware blocks of the SoundCompass. The FPGA is connected via an Inter-Integrated Circuit (I2C) interface with the host platform and receives the audio data from the microphone array via a bus of pulse density modulated (PDM) signals.