Acoustic Signal Generators
Like all signal generators, an acoustic signal generating device is an electronic component that generates a process from repeating or one-off electronic signals. In most cases, an acoustic signal generator is used to make a sound after an electronic signal has been received by it. This could be for the purposes of sounding an alarm or offering a confirmation tone once a certain activity has been conducted. Widely used in automation, audio signal generators are sometimes used with control panels, and on other occasions, designed for PCB mounting. Printed circuit board acoustic generators are generally small and make high-frequency, or piezo-level sounds, as a result of their size. Anything from 1kHz to 9kHz is typical for this sort of device. As well as conventional loudspeaker products, acoustic signal generators can make a noise from a horn or siren. These products tend to be very loud, since they are often used in the field of safety in places where they must be heard. In similar situations, bells are used where the electronic signal causes the metal casing to be sounded from an internal hammer. A typical application for this sort of signal generator would be as a fire alarm. Accessories for acoustic signal devices include items such as mounting brackets and cable glands.