I'm making a player and now I'm trying to implment simple 10 band graphic equalizer.
I found that there are two kind of major frequency sets for 10 band equalizer.
- 31.25Hz, 62.5Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz
- 60Hz, 170Hz, 310Hz, 600Hz, 1kHz, 3kHz, 6kHz, 12kHz, 14kHz, 16kHz
As far as I know, the first one is the ISO standard 10 band equalizer. But, some players like VLC or Clementine support second one.
What's the point of two different freq. sets? For instance, which one is more popular? Or, are they designed for different purpose?