A 3-inch folding pocket-knife opening and closing. Recorded very close to the microphone. Makes a snick/click sound. The sharp blade folds into a steel housing so the sound is metal on metal. Recorded: august 2014, with android voice recorder (mono), inside/evening in very quiet room. Noise reduction with audacity.
Wind generator is turning with moderate wind. Birds around (seagulls, larks)glenans islands, brittany, france, 2021. Recorded with schoeps msrecorded on sounddevice 633wave stereo 48khz 24 bits.