This is helpful because, when you lower the volume of your music, low and high frequencies start to dip more than mid frequencies.
You don’t need to know what’s in the ISO 226 document to understand the implications of its equal-loudness contours. What it proves is that when you’re listening to audio at low volume levels, frequencies in the midrange sound much louder than low or high frequencies.
i’m guessing that this ignores the compression used and also how the sound is reproduced. If you listen to music through your phone, there are so many variables at place i can’t see how this would matter.
most speakers, head/ear-phones people use don’t reproduce a decent sound anyway but they probably are more than enough for streaming or MP3
is this some kind of a gimmick for those awful phone speakers?