sinussweep

A sinussweep, also known as a sine sweep or chirp, is a sound signal where the frequency varies over time according to a sinusoidal function. This means the sound starts at a specific frequency and gradually increases or decreases to another frequency, following a smooth, wave-like pattern. The rate at which the frequency changes can also be controlled, leading to different types of sweeps like linear sweeps (frequency changes at a constant rate) and logarithmic sweeps (frequency changes at a rate proportional to the logarithm of the frequency).

Sinussweeps are commonly used in audio engineering and acoustics for testing and calibration purposes. When played through a speaker or acoustic system, the sinussweep reveals how the system responds to different frequencies. By analyzing the output signal, engineers can identify frequency response irregularities, resonant frequencies, and phase shifts. This information is crucial for equalizing audio systems, diagnosing acoustic problems, and understanding the performance characteristics of speakers and microphones. They are also utilized in fields like sonar and radar for target detection and ranging. The predictable and comprehensive frequency coverage of a sinussweep makes it a versatile tool for characterizing the behavior of various systems across a wide spectrum of frequencies.