Ambience

Ambience (cave sounds in Legacy Console Edition and eerie noise according to subtitles) is a set of sounds that occasionally play when the player is in close proximity to a dark space.

Behavior
Ambient sounds can be played in any dimension, including the Nether and the End, and can be heard in both singleplayer and multiplayer. Ambience can occur in a space of any size, but they seem much more likely to be heard in larger spaces that are completely filled with a light level lower than 8, without any lighting from the sky. Ambience is more likely to play from the direction of darker spaces. The space does not need to be sealed off or hidden - ambience can be heard from a space that the player can actually see - nor does the player need to be underground to hear ambient sounds.

List of ambient sounds
Ambient sounds are found in the  subdirectory in the .minecraft folder. See this tutorial for locating specific sound files. Ambient sounds play randomly in different pitches, as other sounds of Minecraft do. There are 19 sounds (Cave 1 - 19) in total:


 * 1) [[File:Cave1.ogg]]
 * 2) [[File:Cave2.ogg]]
 * 3) [[File:Cave3.ogg]]
 * 4) [[File:Cave4.ogg]]
 * 5) [[File:Cave5.ogg]]
 * 6) [[File:Cave6.ogg]]
 * 7) [[File:Cave7.ogg]]
 * 8) [[File:Cave8.ogg]]
 * 9) [[File:Cave9.ogg]]
 * 10) [[File:Cave10.ogg]]
 * 11) [[File:Cave11.ogg]]
 * 12) [[File:Cave12.ogg]]
 * 13) [[File:Cave13.ogg]]
 * 14) [[File:Cave14.ogg]]
 * 15) [[File:Cave15.ogg]]
 * 16) [[File:Cave16.ogg]]
 * 17) [[File:Cave17.ogg]]
 * 18) [[File:Cave18.ogg]]
 * 19) [[File:Cave19.ogg]]

Trivia

 * Since bodies of water have light level zero everywhere more than 4 blocks deep, on rare occasions ambient noises can be heard if the player is standing by an ocean or deep body of water, regardless of light level outside the water.
 * On superflat worlds, even when the light level is 15, ambience can still be played.
 * When ambient sound 14 is put into a spectrogram, It appears to be a creeper face. Sound14 spectrogram.png