ITU-R 468 noise weighting is a standardized measurement technique used for assessing background noise levels in rooms, particularly in relation to audio and broadcast applications. This weighting is defined by the International Telecommunication Union (ITU) in its Recommendation ITU-R 468, which specifies a way to measure noise in environments where sound quality is critical, such as in studios, concert halls, or broadcasting facilities.

Humming can refer to several concepts, depending on the context: 1. **Musical or Vocal Humming**: This is the act of producing a musical sound with the voice while keeping the mouth closed. Humming can be a way to create melody, express feelings, or as a form of relaxation.

The number 152 is an integer that comes after 151 and before 153. It can be used in various contexts, such as mathematics (where it can be analyzed for its properties, like being an even number), in counting, or in coding systems (like ASCII) where it can represent certain characters or values. In Roman numerals, 152 is represented as CLII.

The history of broadcasting is a rich and complex narrative that spans over a century, touching on technological advancements, cultural changes, and the evolution of media consumption. Here’s an overview of key developments in the history of broadcasting: ### Early Beginnings (Late 19th - Early 20th Century) - **Invention of Radio**: The foundations of broadcasting began with the invention of the radio in the late 19th century.

High fidelity, often abbreviated as "hi-fi," refers to high-quality reproduction of sound or visual media that closely resembles the original source material. The term is commonly used in audio and music contexts but can also apply to visual media. Here are a few key aspects of high fidelity: 1. **Audio Quality**: In audio, high fidelity typically means that the sound reproduction is very faithful to the original recording, with minimal distortion, noise, and other artifacts.

High-resolution audio (HRA) refers to audio files or formats that have a higher sampling rate and bit depth compared to standard CD-quality audio. While CD-quality audio typically has a sampling rate of 44.1 kHz and a bit depth of 16 bits, high-resolution audio can feature sampling rates up to 192 kHz or higher and bit depths of 24 bits or more.

EIAJ MTS refers to a standard for video tape formats developed by the Electronic Industries Association of Japan (EIAJ). Specifically, MTS stands for "Multi-Track System," and it was used primarily for video recording and playback in professional and consumer applications. The EIAJ MTS standard includes various specifications for tape width, recording methods, and track configuration. It enabled improved compatibility among devices and enhanced the quality of video recordings.

Digital recording refers to the process of capturing audio or video signals in a digital format. Unlike analog recording, where sound waves are represented as continuous waveforms, digital recording captures the signals as discrete samples. This involves converting sound waves into binary data (0s and 1s) through a process called analog-to-digital conversion (ADC). Key components and concepts of digital recording include: 1. **Sampling**: The continuous sound wave is sampled at specific intervals.

Delayed auditory feedback (DAF) is a phenomenon and a technique used primarily in speech therapy, research, and various communication studies. It occurs when a person's speech is fed back to them with a slight delay—usually measured in milliseconds. This delay can affect how individuals perceive and produce speech. In a controlled environment, DAF is often used as a tool to help individuals who stutter. The delayed feedback can disrupt the normal flow of speech, which may lead to changes in speech patterns.

"Comic sound" typically refers to sound effects or audio elements that are used in comic books, graphic novels, and animated media to enhance storytelling and convey action, emotions, and humor. These sounds are often represented by onomatopoeic words like "Bam!", "Pow!", "Zoom!", and "Crash!" which visually depict the sounds associated with events or actions in the storyline.

"Unidentified sounds" can refer to a variety of phenomena, often characterized by noises or audio signals that cannot be immediately recognized or attributed to a known source. These sounds can occur in different contexts, including: 1. **Paranormal Context**: In paranormal investigations, unidentified sounds might be associated with ghostly activity, supernatural occurrences, or unexplained noises that challenge conventional explanations.

Stereophonic sound, commonly referred to as stereo, is a method of sound reproduction that uses two or more independent audio channels to create an impression of a multi-directional audio experience. This technique is designed to replicate the way humans naturally hear sounds in the environment, with the ability to perceive spatial locations of sounds, enhancing the realism and depth of audio playback. In a stereo system, sounds are recorded and played back through at least two channels: typically a left channel and a right channel.

"Sounds by type" typically refers to a classification system for audio or sound elements based on their characteristics, purpose, or context. This can apply to various fields, including music, sound design, audio engineering, and other areas where sound plays a crucial role. Here are some common categories of sounds by type: 1. **Natural Sounds**: These include sounds produced by nature, such as birds chirping, water flowing, thunder, and wind rustling through trees.

Sound technology encompasses a variety of techniques, systems, and devices that utilize sound for different applications. It can be broadly categorized into several areas: 1. **Audio Engineering**: This includes the recording, mixing, and reproduction of sound. Audio engineers work with equipment and software to capture sound in studios or live settings, manipulating it to achieve high-quality audio for music, film, television, and other media.

"Alignment level" can refer to different concepts depending on the context in which it is used. Here's a brief overview of some of the primary meanings: 1. **Gaming and Role-Playing:** In many tabletop role-playing games (like Dungeons & Dragons), alignment refers to a character's ethical and moral perspective, typically represented on two axes: law vs. chaos and good vs. evil. Each character has an alignment (e.g.

Aircraft noise pollution refers to the unwanted or harmful sounds generated by aircraft during various phases of flight, including takeoff, landing, and while in-flight. This noise can originate from various sources, including: 1. **Engines**: The noise produced by jet engines or propellers is the primary source of aircraft noise. 2. **Aerodynamic Noise**: As aircraft move through the air, they generate noise due to the airflows over their wings, fuselage, and other structures.

Aeolian sound refers to sound that is produced by the movement of air, particularly wind, interacting with objects in the environment. The term "Aeolian" is derived from Aeolus, the ancient Greek god of the winds. Aeolian sounds can occur naturally, such as the whistling of wind through trees, the rustling of leaves, or the sound of wind blowing across open landscapes, including hills and dunes.

Tree sort is a sorting algorithm that utilizes a binary search tree (BST) to sort elements. The basic idea is to build a binary search tree from the elements you want to sort and then perform an in-order traversal of the tree to retrieve the elements in sorted order. Here’s a brief outline of how tree sort works: ### Steps of Tree Sort 1. **Build a Binary Search Tree (BST)**: - Insert each element from the input list into the binary search tree.

Sound localization in owls refers to their ability to accurately determine the direction and distance of sounds, which is a crucial skill for hunting prey, especially in low-light conditions. Owls have several specialized adaptations that enhance their auditory localization abilities: 1. **Asymmetrical Ears**: Many owl species have ear openings that are located at different heights on the head. This asymmetry allows them to detect sound from various angles, as sound waves reach each ear at slightly different times and intensities.

The term "sound barrier" refers to a concept in aerodynamics that describes the increase in drag and other aerodynamic effects experienced by an object as it approaches the speed of sound, which is approximately 343 meters per second (1,125 feet per second) in air at sea level and at standard atmospheric conditions.