{'fraction_non_alphanumeric': 0.018145161290322582, 'fraction_numerical': 0.018145161290322582, 'mean_word_length': 4.461538461538462, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A silicon core for an acoustic archival tag

This paper presents a tiny 0.5 µm CMOS chip, which forms the core of an acoustic archival tag. The 1.5×1.5 mm die enables tracking of small fishes by detecting a specific sound signature emitted by moored sources. It also houses a temperature sensor and a pressure sensor interface and controls all internal and external communication. The tag consumes 6 µW in standby mode and approximately 75 µW while the sound arrival time detector is operational.