Released 2026-02-18 · Store name “白噪音助眠：聽覺旅伴” · v1.2.3 · 128 MB · free · fully offline
Auditory Companion synthesises noise in real time with DSP, adds 108 ambient sounds, plus immersive TTS reading, all computed on the device.
Why it was made#
Noise-cancelling headphones are already very good, but they are limited against irregular sounds like people talking nearby. Beyond the physical cancellation the headphones do, various kinds of noise have a psychological basis for helping people ignore irregular real-world sound, so I wanted to add a layer on top of the physical one.
The trigger was that my son was about to be born and I thought I might need it.
Who it is for#
People who want psychological help with blocking noise and staying focused, on top of the physical acoustic kind.
How it was done, and where it got stuck#
The content comes in three kinds: various synthesised noises, classic ambient sounds picked from a sound library, and on-device reading in a real human voice.
Two things were hard. One is the interaction design for layering ambient sounds: how several sounds get mixed and balanced is hard to make intuitive on a phone screen. The other is that reading aloud requires cleaning up the formatting and stray text of open-source books, otherwise the reader keeps voicing page numbers and footnotes.
Where it stands#
It needs a better-performing human voice model, but phone memory is not big enough yet. The ambient sounds are also not realistic enough. Better hardware, or being able to buy or record the sounds myself, would make it complete.