DSP Master

Features

Filter design

Analog and discrete IIR filters — Butterworth, Chebyshev I and II, elliptic and Bessel — as lowpass, highpass, bandpass and bandstop, with order estimation, stable up to order 15, bilinear and matched Z transforms, group delay and frequency transformations in the S or Z domain. FIR filters by the window method or the optimal Remez exchange algorithm, with order estimation; Hilbert transformers, differentiators and integrators; Savitzky-Golay filtering.

Spectral analysis

FFT and CZT; Yule-Walker, Burg, covariance and modified covariance estimation; the RMS of frequency bands; peak interpolation, selection and tracking; phase unwrapping; Bartlett, Blackman, Chebyshev, cosine-tapered, flat-top, Hamming, Hanning and Kaiser windows. Cross spectrum, coherence and transfer function, bispectrum and bicoherence in real time; real, complex and inverse complex cepstrum; noise floor, SFDR, THD, THDN, SINAD, RMS and SNR; a spectrogram with a wide choice of processing and display options; and a report generator for the analyzers.

Rate conversion and multi-rate filtering

Rate conversion by any real factor with 160 dB noise attenuation; multi-stage half-band FIR filtering for zoom spectrum, decimation and interpolation; amplitude modulation and demodulation, narrow band-pass filtering and envelope detection.

Signals and systems

A signal generator with stack-based vectorized function evaluation; white, pink, brownian, blue and violet noise next to triangular, square and multi-tone signals; forecasting from selected spectral peaks; sample-and-hold, sample-and-decay and median filters; the zeros of a linear system, and conversion between state-space, zero-pole and transfer-function forms.

Components and streaming

Components connect into pipes and stream real or complex signals in single or double precision. The spectrum analyzer, the signal generator and filtering have ready-to-use component editors; audio recording and playback — 24-bit, at an arbitrary sampling frequency — come with a monitor function and triggers; further components read and write signal files.

Together with MtxVec

The frequency response of analog and discrete filters, fast 1D and 2D convolution, auto- and cross-correlation, deconvolution, 1D and 2D filtering, zero-phase IIR filtering, interpolated FIR filters, the DCT, the Goertzel algorithm, the FFT for every combination of real and complex data, and random number generators.