http://5dfcmsgsfemr4n4oea7nryhfc67xcnf7bk6wjvw7q2h4zmcakspby2id.onion/immersion.html
One thing that helps, and this goes hand in hand with the treat-the-mindscape-like-any-other-place bit above, is to remember that just because the sound can’t be heard doesn’t mean it is gone, or that it can’t be tuned into again. Sight works in a similar way as improving sound: if you’re struggling with visualizing something, find as many pictures as you can and do your best to recreate it.