How can I make slowmo sound effects? (Friend's example below)

[Taisen_Goh]

Hi guys. Taisen here. I just want to ask how the hell I can create slowmo sound effect that kinda have like wave and cave sound.

My friend did it. But he doesn't tell me how.

He change from

ORIGINAL - https://vocaroo.com/i/s0KcO8C11aPZ

to

His SLOWMO - https://vocaroo.com/i/s0DJ2xNpTVM2

That sounds awesome! Is there any ways that we can do this? Thanks!

[Omar.Fathy · Accepted solution]

it is so easy Taisen Goh​

Just right click your sound layer from the comp layers.

- Choose Time> enable time remaping.

it will give you two keyframes one at the first of your sound layer and another one in the last just click and drag the last keyframe to make your sound long.

- Then click and drag the sound layer to make it long.

[Roland Kahlenberg]

It sounds like there is a pitch change brought about by slowing down the audio. Then reverb and delay were added.

I suggest you use Audition for this since it's optimized for audio and it has a better playback engine than AE - ie, it's realtime playback for a single track of audio unless you've applied some heavy-computing effects.