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.)<br/>水下警察警笛<br/>聲道：2<br/>類型：wav<br/>Cat、distortion、Purr、Police、Siren、Underwater<br/>貓、失真、發出喉音、警察、siren、水下<br/>資料來源：freesound ( https://freesound.org )