Sweep Generator Online

The sweep generator online provides a deterministic time-domain signal whose instantaneous frequency follows a chosen trajectory. It targets engineers, technicians, and researchers performing frequency response testing, calibration, and DSP development. It solves the need for programmable, repeatable sweeps without bespoke hardware, providing precise control over start/end frequencies, duration, and amplitude.
Conceptually, the tool maps time to frequency using either a linear or logarithmic profile, then accumulates phase to produce the samples. It computes f(t) = f_start + (f_end - f_start) * (t/duration) for linear sweeps or f(t) = f_start * (f_end/f_start)^(t/duration) for log sweeps, and integrates to generate the phase phi(t) = 2*pi*integral_0^t f(u)/fs du. The output is a single-channel waveform ready for export as WAV or CSV.
Core value lies in consistency, traceability, and ease of reuse. It supports optional features such as fade-in/out envelopes, phase adjustment, and multiple export formats, enabling quick iteration across test scenarios. Typical use cases include amplifier characterization, RF loopback tests, and DSP pipeline validation, where a known sweep is essential for measuring response curves.