It’s no secret that David Attenborough documentaries such as Planet Earth III and Dynasties use some of the most cutting-edge technology on the market, capturing natural spectacles that leave audiences (myself included) in floods of tears. The latest project from Humble Bee Films and Infield Fly Productions, featuring the revered presenter, puts this equipment at the forefront. Secret World of Sound, debuting on Sky Nature and Now this weekend, explores how animals communicate through their noises and how this influences their behaviour. The mini-series uses organic sound recorded at the time …