waveformssuch

Waveformssuch is a term used in signal processing literature to denote a family of engineered waveforms formed by the controlled superposition of multiple component signals. The concept emphasizes the joint design of time-domain shape and spectral content to achieve specific response characteristics in linear and nonlinear systems.

Generation and design: Waveformssuch waveforms are typically produced by additive synthesis, combining sinusoids or other basis waveforms with specified amplitudes and phase relationships. Digital methods include polyphase synthesis, vector-phase encoding, or table-lookup with interpolation. The design often targets flat or tailored spectra, low cross-correlation between components, and controllable instantaneous frequency profiles.

Properties and analysis: Their properties include tunable bandwidth, spectral mask satisfaction, and time-varying amplitude/phase. They can be analyzed with Fourier analysis, short-time Fourier transform, and higher-order statistics; cross-correlation and ambiguity functions may be used to characterize time-frequency concentration.

Applications: In communications, waveformssuch can be used for multi-carrier or spread-spectrum schemes; in radar and sonar for pulse compression or waveform diversity; in audio and music synthesis for timbral control; in testing and calibration of signal processing systems.

Limitations and terminology: Because the term is not standard, usage varies and definitions may overlap with existing concepts such as linear combination of basis signals, pseudorandom sequences, or chirp signals. Researchers are encouraged to specify construction rules and spectral targets.

See also: Waveform, Additive synthesis, Spectral shaping, Pulse compression.