audio: Microphone

Evidence: 100 • authority: 72

A microphone, colloquially called a mic (), or mike, is a transducer that converts sound into an electrical signal. Microphones are used in telecommunication, sound recording, broadcasting, and consumer electronics, including telephones, hearing aids, and mobile devices. Several types of microphone are used today, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate; and the contact microphone, which uses a crystal of piezoelectric material. Microphones…

Evidence: 59 • authority: 92

A review of assistive listening device and digital wireless technology for hearing instruments.. Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and b…

Evidence: 59 • authority: 72

Bluetooth is a short-range Wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft). It employs UHF radio waves in the ISM bands, from 2.402 GHz to 2.48 GHz. It serves as an alternative to wired connections, and is mainly used to exchange files between nearby portable devices, to connect cell phones and music players with wireless headphones, wireless speakers, HIFI systems, or car audio, and for wireless transmission between TVs and soundbars. Bluetooth is…

Evidence: 52 • authority: 88

Microphones. Abstract The programme chain as described in Chapter 1 begins with one or more microphones and ends with one or more loudspeakers (the usual number is two, suitably spaced to produce the stereo effect of musicians arranged more or less naturally across an arc). Microphones and loudspeakers belong to the large family of ‘transducers’, that is devices whose job it is to convert energy from one form to another. The microphone converts acoustical energy into electrical energy, whilst the loudspeaker, interestingly enough, does the same job in reverse, converting electrical energy (supplied as an electric current) back into acoustical energy (radiated as sound waves). Other examples…

Evidence: 45 • authority: 80

Digital in-the-Ear Hearing Aids are Susceptible to Bystander Electromagnetic Interference from 2.5G Mobile Telephones

Evidence: 45 • authority: 80

Hearing Aids and GSM Mobile Telephones

Evidence: 45 • authority: 80

Hearing Aids, Assistive Listening Devices, and Telephones: Issues to Consider

Evidence: 45 • authority: 80

Hearing Aids and GSM Mobile Telephones

Evidence: 38 • authority: 80

Hearing Aids and Digital Wireless Telephones

Evidence: 38 • authority: 92

The Ongoing Challenges of Hearing Loss: Stigma, Socio-Cultural Differences, and Accessibility Barriers.. Background/Objectives : Hearing loss (HL) is a prevalent condition that can lead to social exclusion. This review explores the epidemiological, cultural, and social dimensions of HL and examines the barriers to accessibility that individuals with HL encounter. Methods : This research employs a narrative review approach to provide a comprehensive overview of HL, focusing on stigma, gender disparities, cultural and social differences, and accessibility challenges. Results : The review highlights pervasive prejudices surrounding HL and hearing devices. Gender disparities are evident, with D…

Evidence: 38 • authority: 92

Hearing Aid-Related Standards and Test Systems.. Many documents describe standardized methods and standard equipment requirements in the field of audiology and hearing aids. These standards will ensure a uniform level and a high quality of both the methods and equipment used in audiological work. The standards create the basis for measuring performance in a reproducible manner and independent from how and when and by whom parameters have been measured. This article explains, and focuses on, relevant acoustic and electromagnetic compatibility parameters and describes several test systems available.. Authors: Ravn G, Preves D.. Journal: Seminars in hearing. Year: 2015

Evidence: 38 • authority: 92

HearCARE: Hearing and Communication Assistance for Resident Engagement.. Impaired hearing is related to poor health outcomes, including compromised cognitive function, in aging individuals. Hearing loss is the third most common chronic health condition after arthritis and heart disease in older adults and the fourth most detrimental condition related to quality of life in older adults. Only 18% of aging adults who have impactful hearing loss actually use custom-fit amplification. Therefore, the majority of aging individuals entering senior living facilities will have untreated hearing loss. Older adults move to senior communities to maintain or increase their social engagement, to receive c…