Echokinesis is a relatively obscure term that refers to the ability to manipulate or control sound waves. While there may not be many direct synonyms for this particular word, there are a few related terms that could be used in its place. For example, auditory manipulation or sound control might be alternatives. If the focus is specifically on the ability to amplify or enhance sound, terms like sonokinesis or audiokinesis could also be used. Ultimately, the choice of word will depend on the context and specific meaning that the author is trying to convey.