MSGEQ7 9/2004 Seven Band Graphic Equalizer Data Sheet Description Features The seven band graphic equalizer IC is a CMOS chip that divides the audio spectrum into seven bands, 63Hz, 160Hz, 400Hz, 1kHz, 2.
5kHz, 6.
25kHz and 16kHz.
The seven frequencies are peak detected and multiplexed to the output to provide a DC representation of the amplitude of each band.
No external components are needed to select the filter responses.
Only an off chip resistor and capacitor are needed to select the on chip clock oscillator frequency.
The filter center frequencies track this frequency.
Other than coupling and decoupling capacitors, no other external components are needed.
The chip supply can be betwe...

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