Spectrum analyzer software allows a user to analyze the electrical signals created by a sensor or device. In some cases, spectrum analyzer software can refer to software that displays the spectral content of audio signals. However, in radio frequency (RF) engineering, spectrum analyzer software is used by engineers to analyze waveforms captured by signal and spectrum analyzers  and oscilloscopes to validate RF designs. Spectrum analyzer software is used for a number of applications, including wideband radar and pulsed RF signals, Wireless LAN, Bluetooth, Commercial Wireless, EMC/EMI pre-compliance testing , debugging, and more.