So on my galaxy buds two I must manage to have ambient sound and noise canceling on only one ear bud.. but lately anytime I attempt to get it done it suggests this Physicist Werner Meyer-Eppler were motivated by Homer Dudley's 1948 invention of your Vocoder and started in 1951 https://baidubookmark.com/story18156802/an-unbiased-view-of-sci-fi-ambient-music