Accelerate spectral analysis and time-frequency analysis functions using GPUs. C/C++ Code Generation. Generate C/C++ code for feature extraction, signal measurements, and vibration analysis. GPU Code Generation. Generate CUDA code for zero-phased filtering and Fourier synchrosqueezed transform functions In prewarped mode, bilinear matches the frequency 2πf p (in radians per second) in the s-plane to the normalized frequency 2πf p /f s (in radians per second) in the z-plane. The bilinear function works with three different linear system representations: zero-pole-gain, transfer function, and state-space form.. bilinear uses one of two algorithms depending on the format of the input linear ...