Sound requires a medium, such as air, water, or a solid material, to propagate because it relies on the mechanical vibration of particles in the medium. In a vacuum, where there is no matter to transmit these vibrations, sound cannot travel at all. Therefore, the speed of sound in a vacuum is effectively zero.
As for the speed limit of sound traveling through any sort of electrical device, it depends on the specific properties and design of the device. In general, sound travels through electrical devices at speeds comparable to its propagation through the medium used within the device.
For example, in most cases, sound travels through air at approximately 343 meters per second (or about 767 miles per hour) at room temperature and atmospheric pressure. If an electrical device, such as a speaker or a microphone, is designed to transmit sound through air, the speed of sound within the device would be similar to the speed of sound in the surrounding medium.
However, it's important to note that certain materials or structures, such as specialized acoustic waveguides or transducers, can alter the speed of sound and acoustic propagation within a device. These materials or structures may be designed to enhance or manipulate the behavior of sound waves in specific ways, leading to different propagation speeds within the device.
In summary, the speed of sound in a vacuum is zero since sound cannot propagate in the absence of a medium. The speed of sound within any sort of electrical device will depend on the specific properties and design of the device, as well as the medium through which the sound is transmitted.