The term "subsonic waveform" typically refers to a waveform or sound wave that has a frequency lower than the threshold of human hearing, which is approximately 20 Hz. In other words, subsonic waves have frequencies below the audible range for humans.
Sound waves are characterized by their frequency, which determines the pitch or tone of the sound, and their amplitude, which corresponds to the volume or intensity of the sound. Subsonic waves fall below the lower frequency limit of human hearing and cannot be perceived by our ears.
While subsonic waves may not be audible to humans, they can still have practical applications in various fields. For example:
Engineering and Acoustics: Subsonic waves are used in acoustics and vibration analysis to study low-frequency phenomena, such as structural vibrations, seismic activities, and the behavior of large-scale systems like bridges, buildings, and machinery.
Music and Audio Production: Subsonic frequencies can be intentionally incorporated into music and audio recordings to add a sense of depth or impact to the sound. Subwoofers, for instance, are designed to reproduce very low-frequency sounds, including subsonic frequencies, to enhance the listening experience.
Sonar and Underwater Applications: Subsonic waves are used in sonar systems for underwater navigation, mapping, and communication. These low-frequency waves can propagate through water more efficiently than higher-frequency waves, allowing for long-range detection and communication underwater.
It's worth noting that while subsonic waves are below the audible range for humans, some animals, such as elephants and whales, are capable of perceiving and producing sounds in the subsonic frequency range.