Question: Is there a matrix or table showing how audibly similar the different sounds from the IPA are? I'm looking for a scalar value that somehow measures the oral distance between two phonemes.
Example: The following sounds are "close"
while the following sounds are "distant"
Nomenclature: I'm putting quotes around "close" and "distant" since I don't know the proper term to quantify the oral similarity between two phonemes. Please edit or correct any mistakes I've made.
Motivation: I'm actually looking for this similarity matrix with a reduced set of the IPA, namely those sounds coming from the ARPABET.