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Comment on SoundFocus (YC S13) Launches With an App for ‘20/20 Hearing’parent

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Adding noise can damage the ears, and adds more stress to the body.. just saying..

Not sure what you mean by "adding noise".

I assume if external noise is drowning out the music / changing how it sounds, then the music will be modified to let you hear certain sounds better via making them louder.

loceng, we try to avoid that - a simple equalizer will create an amplification of frequency bands without gain control, so you get a sound of higher amplitude/magnitude, which can have a negative impact as you pointed out.

We use some techniques to rebalance your music - by making sounds that are softer in the mix louder, while keeping the very loud sounds at the same level. We also try to change the relative volume of the frequency bands you do not hear well, while preserving the overall volume.

Since psychoacoustics vary a bit from person to person, it may be perceived as mildly louder or softer than the original, but overall it will be at a similar volume level.

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