Subject:Waveform

Posted by: tropheus

Date:10/9/2001 2:58:14 PM

Can someone explain to me the difference between a point which is above the baseline and a point which is under? The on line help says something about the polarity. What does this mean? Polarity of what?

Subject:RE: Waveform

Reply by: Rednroll

Date:10/9/2001 11:14:36 PM

Have you ever dealt with a simple sine wave? The baseline is where 0 volts is. Anything above the baseline is a positive voltage (ie greater than 0 volts) and anything below the baseline is a negative voltage. Thus Polarity refers to a Plus or Negative value. In a simple sinewave the signal Travels in the first 180 degrees of the cycle from 0 volts to a peak positive value then back to 0, this is positive polarity of the voltage traveling from negative to positive. From 180 degrees to 360 degrees it travels from 0 volts (ie the baseline) to a peak negative voltage, thus the voltage travels from positive to negative. This is negative polarity. This is a how Simple AC sinewave works or are described. Audio signals are nothing but many AC sinewaves added together.

I hope this info, helps your music sound better :-)
Brian Franz