A sine wave is a mathematical curve that describes a smooth, periodic oscillation. It is one of the most fundamental waveforms in mathematics, physics, and engineering. The sine wave is characterized by its smooth and continuous shape, which resembles a regular, oscillating pattern.

Sonic soot blowers are industrial devices used to clean and remove soot, ash, and other deposits from surfaces such as boiler tubes, heat exchangers, and other equipment in power generation plants, refineries, and various manufacturing processes. They utilize high-frequency sound waves, typically in the ultrasonic range, to create vibrations that can dislodge and remove deposits without requiring physical scraping or extensive manual labor.

Sonification is the process of converting data into non-speech audio signals. It is used to represent information and facilitate understanding through sound. This process can involve transforming numerical data or other forms of information into auditory displays, allowing users to perceive trends, patterns, and anomalies through auditory means. Sonification can be applied in various fields, including scientific research, medical diagnostics, data analysis, and even in artistic contexts.

Ultrasound is a type of sound wave that has frequencies above the range of human hearing, typically above 20 kHz. Sound, in general, is a mechanical wave that propagates through a medium (such as air, water, or solids) as a vibration of particles. The characteristics of sound, including its frequency, wavelength, and amplitude, determine its pitch and volume.

Soundscape ecology is an emerging field within ecology that focuses on the study of acoustic environments and the role that sounds play in ecosystems. It integrates aspects of ecology, sound studies, and bioacoustics to understand how sounds contribute to ecological processes, species interactions, and overall biodiversity. Key components of soundscape ecology include: 1. **Acoustic Habitat**: The soundscape of a particular area, which encompasses all the natural and human-made sounds present in that environment.

Thermoacoustics is a field of study that explores the interaction between thermal and acoustic (sound) phenomena. It typically involves the generation of sound waves through temperature gradients or thermal processes. The basic principle behind thermoacoustic processes is that when a temperature gradient exists in a medium (like a gas), the variation in thermal energy can lead to changes in pressure and density, which can generate sound waves.

A **whispering-gallery wave** refers to a type of wave phenomenon that occurs in certain structures, particularly in circular or curved geometries, such as domes, tunnels, and other enclosed spaces. The term is derived from the concept of "whispering galleries," which are architectural features where sound can travel along the curved surface of the gallery, allowing whispers to be heard clearly across large distances with minimal loss of sound.

"Sound technology stubs" typically refer to short articles or entries related to sound technology that are part of a larger database, such as Wikipedia. In these platforms, a "stub" is a term used to describe a page that is considered incomplete or lacking in detail. This means that the entry provides only basic information and invites contributors to expand on it by adding more content, references, and details.

Dawn Bonfield is a notable material scientist and engineer known for her work in the fields of engineering, materials science, and her advocacy for diversity in STEM (Science, Technology, Engineering, and Mathematics) fields. She has been involved in promoting the importance of science and engineering education, especially for women and underrepresented groups. Bonfield has contributed to various initiatives aimed at increasing participation in STEM and has received recognition for her efforts to inspire the next generation of engineers and scientists.

The acoustic approximation is a concept used in various fields of physics and engineering, particularly in the study of wave phenomena, such as sound waves. This approximation allows for the simplification of equations governing wave propagation under certain conditions. In the context of fluid dynamics and acoustics, the acoustic approximation typically assumes that: 1. **Linearization**: The equations governing the fluid dynamics or wave propagation are linearized, meaning that the nonlinear effects are neglected.

Acoustic dispersion refers to the phenomenon where different frequencies of a sound wave travel at different speeds when propagating through a medium. This results in the spreading out of the sound wave over time, as each frequency component arrives at a different moment. In many materials, the speed of sound is frequency-dependent, meaning that high frequencies may travel faster or slower than low frequencies based on the properties of the medium, such as its density, elasticity, and temperature.

Refraction of sound refers to the change in direction of sound waves as they pass from one medium to another or as they travel through different layers of a medium with varying properties, such as temperature or density. This phenomenon occurs because sound waves travel at different speeds in different materials or under different conditions. Here are some key points about sound refraction: 1. **Sound Speed Variability**: The speed of sound varies with factors like temperature, humidity, and pressure.

The Journal of Sound and Vibration is a peer-reviewed academic journal that focuses on the study of sound and vibration in various contexts. It publishes original research articles, reviews, and technical notes related to the fields of acoustics, vibration analysis, noise control, and related disciplines. Topics covered in the journal may include fundamental research on sound propagation and vibration phenomena, applications in engineering, environmental noise assessments, and methods for sound and vibration measurement and control.

"Ultrasonics" is a scientific journal that publishes research articles, reviews, and technical notes related to the field of ultrasonics, which involves the use of high-frequency sound waves (above the upper limit of human hearing, typically above 20 kHz) in various applications. This can include areas such as medical imaging, non-destructive testing, industrial cleaning, ultrasonic welding, and other areas where ultrasonic technology is applied.

Self-focusing transducers are a type of acoustic transducer designed to focus sound waves onto a particular point or region without the need for external optical or mechanical systems to direct the beam. This technology leverages the unique properties of certain materials and geometries that cause sound waves to converge or focus at specific points due to nonlinear interactions within the medium.