Trying to record some harbour sounds in Esbjerg, at the westcoast of Denmark on a dull Octobers day. The recording was cut short, as a lorry parked nearby and let its engine run for ages : (. Well, apart from that some passing cars, a jogger and the odd seagull. BP4025 microphone into Oade FR2le recorder. <a href="https://www.flickr.com/photos/59953034@N00/22278179720/in/pool-freesound/" rel="nofollow"><img src="https://farm6.staticflickr.com/5748/22278179720_ba9ea62b1e_z.jpg" alt="Esbjerg Havn" /></a> What is very strange is some high hiss one can hear during the recording. I checked the gear and there was nothing wrong with it, so maybe the sound was there or maybe not? Any ideas? <br/>Esbjerg Harbor.wav<br/>聲道：2<br/>類型：wav<br/>flickr、coast、cars、crows、Esbjerg、harbour、seagulls、Denmark、jogger、field-recording<br/>Flickr的、濱、汽車、烏鴉、埃斯比約、港口、海鷗、丹麥、慢跑者、現場記錄<br/>資料來源：freesound ( https://freesound.org )