Stereo Digital Equalizer Board with Microphone Preamplifier
-----------------------------------------------------------

Version 1.10

Features:

- 20-bit stereo data length
- 96 kHz sampling frequency
- 100 dB dynamic range
- 128x oversampling Sigma-Delta codec
- 6 biquad filters per channel
- Professional microphone preamplifier (left channel only)
- Programmable digital volume control


ATTENTION!
THIS EQUALIZER BOARD JUST A PIECE OF A LARGER PROJECT.
CAN'T OPERATE WITHOUT ANY KIND OF MICROCONTROLLER BOARD OR COMPUTER.

For more information please visit Texas Instrument's website (WWW.TI.COM),
and download the datasheets of TAS3001C, PGA2500 and TLC320AD77 ICs.

The packed file includes a program (BiquadFilters.exe)
that helps you compute the audio EQ biquad filter coefficients.

Additional help can be found in the following text file:
http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt 

Before you modify the filter coefficients, mute the channel
and wait until the soft mute function is finished.



General Public License
----------------------

This electronic circuit design is distributed WITHOUT ANY WARRANTY;
without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.


Copyright (c) 2004-2005 Pet Lszl
e-mail: shepherdess@freeweb.hu
