DSSF3 Basic 5.0.7.x

The free version of the advanced sound measurement software DSSF3 is now available. It consists of the signal generator, sound recorder and player, and the peak level meter. DSSF3 Basic works with the latest soundboards. Two or more soundboard can be selected easily. The sampling rate can be set up to the maximum value allowed by the hardware.

See also: sound, noise, measurement, oscilloscope, realtime, ACF, SPL, IACC, IACF, spectrum, FFT, audio, signal, generator, analyzer, waveforms, sweep, pulse

Rainbow 5.11.5

Find best Spectral Estimation Method for a Power Spectral Density plot. A menu of 10+ spectral estimators from Steve Kay's textbook 'Modern Spectral Estimation' 1988 is available to choose from. The results differ dramatically from one estimator to another. Plus, varying input parameters and/or number of points may provide discrepancies. See how zero padding effects your results. See 50+ dB weak signal detection.

See also: Power Spectra, PSD, Spectral Estimation, spectral analysis, Spectrum, Fourier transform, FFT, Mathematics, Engineering, Teaching

2D FFT/iFFT plugin 1.0

User-friendly 2D FFT/iFFT (Fast Fourier Transform) plug-in for Adobe PhotoShop compatible plug-in hosts. It uses one of the fastest implementations of the Discrete Fourier Transform and has many applications including periodic noise removal and pattern detection. This can be very useful in analyzing fingerprints, paper sieve patterns etc.

See also: FFT, Fast Fourier Transform, Fourier Transform, Fourier, Transform, plugin, photoshop