Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
NOISE CANCELLING HEADSETS FOR SPEECH COMMUNICATION
Vise andre og tillknytning
Ansvarlig organisasjon
2002 (engelsk)Inngår i: Noise Reduction in Speech Applications / [ed] Davis, Gillian M., Boca Raton, Florida: CRC Press , 2002, s. 305-327Kapittel i bok, del av antologi (Annet vitenskapelig)
Abstract [en]

Headsets for speech communication are used in a wide range of applications. The basic idea is to allow hands-free speech communication, leaving both hands available for other tasks. One typical headset application is aircraft pilot communication. The pilot must be able to communicate with personnel on the ground and at the same time use both hands to control the aircraft. Communication headsets usually consist of a pair of headphones and a microphone attached with an adjustable boom. Headphone design varies widely between different manufacturers and models. In its simplest form, the headphone has an open construction providing little or no attenuation of the environmental noise. In headsets designed for noisy environments, the headphones are mounted in ear cups with cushions that provide some attenuation. The microphone is primarily designed to pick up the speech signal, but if the headset is used in a noisy environment, the background noise will also be picked up and transmitted together with the speech. As a consequence, speech intelligibility at the receive end will be reduced, possibly to zero. To increase the speech-to-noise ratio, it is common to use a directional microphone that has a lower sensitivity to sound incident from other directions than the frontal direction. In addition to this, the microphone electronics are usually equipped with a gate function that completely shuts off the microphone signal if its level drops below a threshold value. The purpose of the gate is to open the channel for transmission only when a speech signal is present. Headsets are frequently used in noisy environments where they suffer from problems of speech intelligibility. Even if an ear-cup type headset is used, the attenuation is relatively poor for low frequencies. Low frequency noise has a masking effect on speech, which significantly reduces the speech intelligibility. Several cases have been reported in which the sound level of the communication signal was increased to hazardous levels by the user to overcome this low frequency masking effect [1,2]. Ear exposure to the communication system resulted in hearing damage, such as hearing loss, tinnitus and hyperacusis.

sted, utgiver, år, opplag, sider
Boca Raton, Florida: CRC Press , 2002. s. 305-327
Emneord [en]
noise canceling, active noise control, headset, speech communication, feedforward, feedback, spectral subtraction
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-9710Lokal ID: oai:bth.se:forskinfoA2B5F7D73716E960C1256C6A003E0F8EISBN: 0-8493-0949-2 (tryckt)OAI: oai:DiVA.org:bth-9710DiVA, id: diva2:837631
Tilgjengelig fra: 2012-09-18 Laget: 2002-11-07 Sist oppdatert: 2015-06-30bibliografisk kontrollert

Open Access i DiVA

fulltekst(567 kB)166 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 567 kBChecksum SHA-512
9209108557469fc1395810e3bd376f80e1379b267da94dd7c601fd32bd1dc0b00d0cabc4cb3a4dc20e72e03d769834957dad1c9f696118cb0e8d55923176c527
Type fulltextMimetype application/pdf
fulltekst(533 kB)212 nedlastinger
Filinformasjon
Fil FULLTEXT02.pdfFilstørrelse 533 kBChecksum SHA-512
a2f6bc8a60dfc66bb77a6c34f587955168cf0f0a9b0158ae8622b1d02364359ab9d6a79ef2b72c55f58e98ab0fa24962393586011be6c9191219b2f33248d1ce
Type fulltextMimetype application/pdf

Personposter BETA

Håkansson, LarsJohansson, SvenDahl, MattiasClaesson, Ingvar

Søk i DiVA

Av forfatter/redaktør
Håkansson, LarsJohansson, SvenDahl, MattiasClaesson, Ingvar

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 378 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 266 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf