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TipTop Audio Bat Filter ZDSP Cartridge

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Product Description

Compared to their analog cousins, digital filters are precise and deep. They can remove or pass selected harmonics smoothly or aggressively depending on how they’re configured. The result is special character that brings a whole new sonic dimension to the analog modular synthesizer.

The bat filter algorithms are based on the Chebyshev filter topology. They’re pumping at low frequencies, smooth and pleasant at mid range, and aggressive up top as the audio frequency gets closer to the DSP sampling rate. One of the biggest advantages of digital filter design is the ability to cascade filters with no gain loss or added circuit noise like with analog filters. This results in filters with up to 8poles, a slope of 48db!! That’s equivalent to having four 12db analog filters in series, yet maintaining a clean, strong signal at the output.

The Bat filter contains the following algorithms:

Program 1: Dual Stereo 8-Pole Low Pass filter

Program 2: Dual 8-Pole Band Pass

Program 3: 4-Pole High Pass / Low Pass in series

Program 4: 4-Pole High Pass / Band Pass in series

Program 5: 8-Pole Triple Band Reject (notch filters)

Program 6: 8-Pole High Pass / Band Reject in series

Program 7: Stereo Resonator: a unique, dynamically varied structure of filters

Program 8: Stereo 8-Pole High Pass Filter with Stereo Spread control

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