In it’s simplest form, a speaker is just an energy conversion device. It converts electrical signals to sound waves of various frequencies. Ideally, all the frequencies in the speaker output should be at the same level of loudness. If we plot the frequency repsones curve of such an ideal speaker, with frequency (in Hertz) on x-axis and loudness (in Decibals) on y-axis, it would be a flat line at 0db. But such ideal speakers don’t exist. It’s really really difficult to construct such an ideal device. Even if it could be built, it would be too expensive to be practical. That means that we are stuck with ordinary speakers that don’t sound so great, atleast not without some tuning.

Yahoo annoucnes it’s music store.

This article originally appeared on Osnews.com.

When I got my digital camera, I used to shoot pretty much in auto mode. Later when I became a bit experienced and started reading photography books/articles, I started shooting manual.

Have you ever felt like there is someone who controls this world, someone who punishes us when we do bad things and rewards us for doing good? Someone who keeps score; someone who gives us subtle clues when we are lost; someone who watches over us. Have you been hit by too many coincidences? Well, you are not alone.