Even though the Java Edition bug MC-172434 has been fixed a while ago, the Bedrock Edition still has the normal pitch instead of high pitched when the baby piglin zombifies.
Here's a comparison of the zombifying sounds from both editions.

Bedrock Edition (Has the same pitch as it's adult counterpart):
The baby Piglin has the same pitch as it's adult counterpart when zombifying on Bedrock Edition..mp4

Java Edition (The correct pitch):
How the pitch should have been.mp4

How to reproduce:

• Spawn a baby piglin in the overworld
• Wait for it to zombify

Observed results:
The zombifying sound plays in the same pitch as the adult piglins
Expected results:
The zombifying sound should be in high pitched as it's Java Edition counterpart.