For me the best sound speed up I&#x27;ve found is the Android app &quot;Presto&quot; that can be used by the Podcast app as a speedup service. It uses the Sonic algorithm which is specifically tailored for speech speedups above 2x.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;waywardgeek&#x2F;sonic" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;waywardgeek&#x2F;sonic</a>