What is Mach Number? The Mach Number is a dimensionless quantity that represents the speed of an object moving through a fluid, such as air or water, relative to the speed of sound in that fluid. It is named after Austrian physicist and philosopher Ernst Mach, who made significant contributions to the study of supersonic … Read more
What is a Helmholtz Resonator? A Helmholtz resonator is a type of acoustic resonator named after the German physicist Hermann von Helmholtz. It is a simple device consisting of a cavity with an opening that allows air to enter and exit. When sound waves pass through the opening, they cause the air inside the cavity … Read more
What is Refraction? Refraction is the bending of a wave as it passes from one medium to another. This phenomenon occurs when the wave changes speed due to the change in the medium’s density. In the context of audio technology, refraction refers to the bending of sound waves as they travel through different mediums or … Read more
What is an Acoustic Model? An acoustic model is a statistical representation of the relationship between audio signals and the linguistic units they represent, such as phonemes, words, or sentences. In the context of speech recognition technology, acoustic models are used to map acoustic features extracted from audio signals to the corresponding linguistic units. This … Read more
What is Sound Measurement? Sound measurement is the process of quantifying sound waves in terms of their intensity, frequency, and other characteristics. It involves the use of specialized equipment to accurately capture and analyze sound levels in various environments. Sound measurement is essential for assessing noise pollution, ensuring compliance with regulations, and monitoring the impact … Read more
What is Acoustic Shielding? Acoustic shielding refers to the process of using materials and techniques to block or reduce the transmission of sound waves from one area to another. It is commonly used in various industries and settings to create a quieter and more comfortable environment by minimizing the impact of noise pollution. How does … Read more
What is a Sound Isolation Test? A Sound Isolation Test is a method used to measure the effectiveness of soundproofing in a room or building. It determines how well a structure can block out external noise and prevent sound from leaking in or out. This test is crucial in ensuring that audio recordings, performances, or … Read more
What is a Sine Wave? A sine wave is a type of waveform that is characterized by a smooth, repetitive oscillation. It is a fundamental waveform in mathematics and physics, representing a pure tone with a single frequency and amplitude. The shape of a sine wave is defined by the mathematical function y = A … Read more
What is Psychoacoustics? Psychoacoustics is the branch of psychology and acoustics that deals with the perception of sound and how it is interpreted by the brain. It explores how humans perceive and process sound waves, including pitch, loudness, timbre, and spatial location. Psychoacoustics is concerned with understanding the relationship between physical sound waves and the … Read more
What is the Preferred Noise Criterion (PNC)? The Preferred Noise Criterion (PNC) is a standardized method used to evaluate and measure the noise levels in indoor environments. It is a metric that takes into account both the sound pressure levels and the frequency distribution of noise to provide a comprehensive assessment of the overall noise … Read more
