Liquid Instruments SW-Lab-FIR FIR Filter Builder

Overview

The Liquid Instruments SW-Lab-FIR FIR Filter Builder is a 2-channel finite impulse response (FIR) filter module for the Moku:Lab series. It enables design and implementation of lowpass, highpass, bandpass, and bandstop FIR filters with up to 14,819 coefficients at sampling rates up to 15.625 MHz. The module allows fine-tuning of filter response in both the frequency and time domains with multiple window functions and impulse response options.

Key Features

• Sampling rate: up to 15.625 MHz
• Filter coefficients: up to 14,819
• Sub-microsecond input-output latency
• Input range: ±0.5 V or ±5 V
• Output range: ±1 V into 50 Ω
• Corner frequencies: 58.63 mHz to 17.58 MHz
• Four frequency response shapes: lowpass, highpass, bandpass, bandstop
• Eight window functions: Bartlett, Hanning, Hamming, Blackman, Nuttall, Tukey, Kaiser, None
• Five impulse response options: rectangular, sinc, equation input, custom, and others
• Time and frequency domain design visualization
• Custom filter coefficient import
• Input control matrix for signal combining
• API support: Python, MATLAB, LabVIEW

Applications

• Precision signal filtering and shaping
• System identification and characterization
• Custom impulse response design
• Real-time digital signal processing