Signal generators and waveform generators are used to test and align all types of transmitters and receivers, to measure frequency and to generate a signal, waveform or noise source.

Digital audio systems electronically record and store audio signals such as voice, music, alarm, and security messaging for broadcast, editing, monitoring, and playback

Audio analyzers measure the noise and audio spectrum of output from an amplifier or a stereo

Audio transducers and buzzers are used in electronic equipment, toys and various warning devices as the sounding component

Audio mixers and consoles are units that combine signals from microphones and/or line level sources to produce a combined signal or signals

Signal isolators must be used when connecting grounded signal sources to grounded signal followers.

Spectrum analyzers and signal analyzers display raw, unprocessed signal information such as voltage, power, period, wave shape, sidebands, and frequency.