Quickfilter Technologies, Inc. has readied a reference design to permit a single QF1D512, simple and versatile FIR engine (SavFIRe), IC to be configured to provide multiple channel filtering in a single device. Using this solution, the device allows designers to implement audio equalization for both the left and right channels.

In the two-channel equalizer configuration, the QF1D512 SavFIRe chip can implement, as an example, a 200-20 kHz band pass filter. The filter will reject better than 24 dB per octave in the transition band based on a 44.1 kHz sampling rate. With Quickfilter’s QuickPro design tools, the user can also implement a free form editor for a virtually infinite array of “sound shaping” possibilities.

This configuration can be applied to both wired and wireless audio systems including wireless speakers, stereo headsets, docking stations for iPods, other MP3 players and satellite radio systems, and audio systems for stereo networks.

The QF1D512 SavFIRe chip is packaged in a 3 mm x 3 mm QFN package. It is characterized over the industrial temperature range.

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