24 Mei 2010

GRAPHIC EQUALIZER CALCULATOR

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Graphic EQ CALCULATOR

to calculate Capasitor - Resistor Value & Frequency on Graphic Equalizer design
Graphic EQ unit




C0:
uF

CL:
uF

R0:

Kohm

RL:
Kohm





f0=Hz

Q0=




Graphic Equalizer Definition:

A graphic equalizer is a high-fidelity audio control that allows the user to see graphically and control individually a number of different frequency bands in a stereophonic system. A typical graphic equalizer consists of several audio filter/amplifiers, each centered at a specific frequency in the audio range. Most graphic equalizers have two identical sets of filter/amplifiers, one for each channel in a stereophonic system.
The gain (volume) controls in most graphic equalizers are slide potentiometers that are adjusted by moving a control button up or down. Gain is increased by sliding the button upwards. The slide potentiometers for each channel are placed side-by-side, with the lowest-frequency unit at the left and the highest-frequency unit at the right. In this way, the positions of the buttons appear to follow a graphical curve that represents the gain as a function of frequency for each channel.
Graphic equalizers are common in middle- and high-end stereophonic sound systems for consumer use. They are found in practically all professional recording studios. Graphic equalizer programs are also available for use in fine-tuning sound in a personal computer. 



HOW TO
input value C0CLR0RL and click on CALC then answer
freq point example:
  • 100-200-400-800-1.6K-3.2K-6.4K
  • 62-125-250-500-1K-2K-4K
  • 50-120-400-500-600-4.5K-10K
  • 31-62-125-250-500-1K-2K-4K-8K-16K
  • 31.5-63-125-250-500-1K-2K-4K-8K-16K
  • 31-44-63-88-125-175-250-500-500-700-1K-1.4K-2K-2.8K-4K-5.6K-8K-11K-16K
  • 40-50-63-80-100-125-160-200-250-315-400-500-630-800-1K-1.25K-1.6K-2K-2.5K-3.15K-4K-5K-6.3K-8K-10K-12.5K-16K
  • 16-31.5-63-125-250-500-1K-2K-4K-8K-16K
  • 16-22.4-31.5-45-63-90-125-180-250-355-500-500-710-1K-1.4K-2K-2.8K-4K-5.6K-8K-11.2K-16K
  • 16-20-25-31.5-40-50-63-80-100-125-160-200-250-315-400-500-630-800-1K-1.25K-1.6K-2K-2.5K-3.15K-4K-5K-6.3K-8K-10K-12.5K-16K





    Application


    NB : For LA3600 IC Based, please User R0 = 1.2K    ,    RL=68K
     

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