I really like the idea, but I find Speex distorts the audio way too much in a way that makes it hard to understand afterwards. I'm willing to sacrifice as much

I really like the idea, but I find Speex distorts the audio way too much in a way that makes it hard to understand afterwards. I'm willing to sacrifice as much quality as I can as long as the speech remains easy to understand, but after that, any space savings aren't worth it.