This was a recording I made on a Zoom H2 of a cat's purr, ran thru several filters until I had what I wanted, a repeating, ordered, police like siren underwater. Recorded at the highest WAV settings on my H2, so it should be decent enough. (Chirping sound heard on Freesound disappears on full downloaded version.)
水下警察警笛
聲道：2
類型：wav
Cat、distortion、Purr、Police、Siren、Underwater
貓、失真、發出喉音、警察、siren、水下
資料來源：freesound ( https://freesound.org )

Recording of fast running stream over rocks outdoors.
快速運行流1.mp3
聲道：2
類型：mp3
brook、loud、river、flowing、outdoors、water、fast、flow、babbling、liquid、stream、creek
溪、響、河、流動、在戶外、水、快速、流、胡說、液體、流、溪
資料來源：freesound ( https://freesound.org )

Loop made while I was testing some gear. 130 bpm. Recorded in Cubase.My profile-info/other stuff.
閥門amp.guitar.wav
聲道：2
類型：wav
noise、hard-rock、drum、loop、distorted、zagi2、guitar、electric、distortion、overdrive、saturation
噪聲、硬石、鼓、循環、扭曲、zagi2、吉他、電動、失真、疲勞過度、飽和
資料來源：freesound ( https://freesound.org )

This is my first upload: a short walk between the stalls of the Vismarkt in Groningen, Netherlands. Is was a splendid and sunny saturday morning, about 9.30 am, May 7th 2016. In the first part of the recording, a garbage truck is already cleaning up. Fish crates are being piled up and money is exchanging hands.As the name of the market square suggests, the stalls are filled with fresh North Sea and Wadden Sea fish. But I also passed stalls where cheese, meat and spices were sold. Business was thriving at the time of the recording. The Groningen Vismarkt is broadly recognized as one of the finest food markets in the country.I used an iPhone with a Zoom iq5. As said, this is my first recording, so please bear with me... I intend to learn.
Vismarkt格羅寧根
聲道：2
類型：wav
market、city、street、freshmarket、people、chatting、field-recording、town、groningen
市場、市、街、freshmarket、人、聊天的、現場記錄、鎮、格羅寧根
資料來源：freesound ( https://freesound.org )

It's a calm autumn day near a hamlet Haanwijk. TAKE 2.Two hundred meter away a tearoom where people relax after a day of cycling. Kids play in the distance. Around me the farmland and a small forest with birds, singing like the do during the fall (not too much). A hamlet at the edge of woods and farmland.Date/time: Saturday, September 3rd 2015, 3-4pm.Weather: Autumn, wind 0-1 bft, cloudy, temp 15c.Location; Hamlet between farmland and small woods, Hamlet Haanwijk, 200m from tearoom''Koffie- en Theehuis 't Haantje'', Haanwijk, Sint-Michielsgestel. Google maps: 51.654127, 5.320590Gear chain: modified Rode NT4 XY and Rode NTG1, in Rode Blimp > Sound Devices 302 >Tascam dr-100 Mk2. Decoded Mid-side to STEREOWhen you use this sound it would be nice if you spent a voluntarily donation to freesound. YOU ALWAYS HAVE TO CREDIT/ATTRIBUTE me (klankbeeld) and freesound.org in your work if you use this sound. Please do it like this if possible: http://freesound.org/people/klankbeeld/Thank you.Find more recordings here search: haanwijkRAW 96/24 MID-SIDE-file available on PM request. File-name: 151003_0804 MS.wav
hamlet Haanwijk秋季NL 01 151003_0804 ST.flac
聲道：2
類型：flac
background-sound、afternoon、bird-song、farmland、white-noise、2pm、fall、placid、acorns、field-recording、calm、windless、birds、children、village、woods、autumn、hamlet、forest、people、estate、general-noise
背景音、下午、鳥的歌聲、農田、白噪聲、下午、秋季、波瀾不驚、橡子、現場記錄、冷靜、無風的、鳥類、孩子、村、樹木、秋季、村莊、森林、人、房地產、一般噪音
資料來源：freesound ( https://freesound.org )

Recorded on Zoom H6 Field recorder Using Shotgun mic with dead cat.Recorded in a garage room size 24x24 feet (7400x7400 mm)Edited in Reaper.The sound of a old radio being switched on with power but no radio station playing and different switches being flipped up and down.
OldSwitches.wav
聲道：2
類型：wav
clicks、electronic、OWI、quick、radio、pioneer、switches、flips、old-time-radio、technology、old、slow
點擊、電子、OWI、快、無線電、先鋒、開關、翻轉、古時候的無線電、技術、舊、慢
資料來源：freesound ( https://freesound.org )

An in your face metal loop recorded directly from my amplifier, the drums are made by me with Rhythm Rascal.Feel free to use however you like! Credit is Appreciated!
聲道：2
類型：mp3
Power、Drums、Metal、Heavy、Thrash
資料來源：freesound ( https://freesound.org )

Cosmic sound with stutter effect, fade out
Fx7022a.wav
聲道：2
類型：wav
electric、future、effect、cosmic、stutter、fx、space、sci-fi、sound
電動、未來、影響、宇宙的、口吃、例如、空間、科幻、聲音
資料來源：freesound ( https://freesound.org )

After listening some more, I would cut the first minute off in preference of the pure drone.A processed version of my CPU recorded with a pick-up coil (or whatever that thing is called). Amplified, then 50% positive contrast and reverb. A few imperfections here and there and also could do with a few more eq cuts around 700hz & 4K. I spent so much time trying to tame the noise that I neglected the other frequency problems. But hey, I'm an amateur.It won't stand up to much more amplification without introducing more noise, some distortion here and there can be noticed in headphones, but it's very subtle, at least to my ears.
cpu 150429編輯-p 3d-.wav
聲道：2
類型：wav
soundscape、atmosphere、pick-up、minimal、cpu、coil、ambient、background、drone、computers、hum、mood、noise、electro-magnets
音景、大氣層、拾起、最小、中央處理器、盤、周圍、背景、無人駕駛飛機、電腦、哼、心情、噪聲、電磁鐵
資料來源：freesound ( https://freesound.org )

Mies kävelee lenkkitossuilla metsässä varvikossa, varvut rapisevat. Pysähdys. Lähiääni.Äänitetty / Rec: DATPaikka/Place: Suomi / Finland / Hämeenlinna, VanajaAika/Date: 07.05.1991
在樹林裡，木瓦/腳步聲，走在森林裡，叢林沙沙作響，一個接近的聲音
聲道：2
類型：wav
Tehosteet、Walk、Underbrush、Hiking、Field-recording、Footsteps、Trekking、Yle、Finland、Hike、Suomi、Rustle、Patikointi、Trek、Rapista、Askeleet、Finnish-Broadcasting-Company、Varvikko、Patikoida、Forest、Yleisradio、Retkeily、Soundfx
效果、步行、草叢、徒步旅行、現場記錄、步伐、徒步旅行、YLE、芬蘭、遠足、芬蘭、沙沙、徒步旅行、跋涉、Rapista、步、芬蘭廣播公司、Warvikko、檢查出來、森林、廣播、露營、Soundfx
資料來源：freesound ( https://freesound.org )