Long-term signal-to-noise ratio at the input and output of amplitude-compression systems.
We present measurements showing that the long-term signal-to-noise ratio (SNR) at the output of an amplification system that includes amplitude compression may be higher or lower than the long-term SNR at the input, dependent on interactions among the actual long-term input SNR, the modulation chara...
| Publicado en: | Journal of the American Academy of Audiology Vol. 20; no. 3; pp. 161 - 172 |
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| Autores principales: | , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
Mar2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105252436&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105252436 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10500545 9OC jtl: Journal of the American Academy of Audiology issn: 10500545 maglogo: Y pubinfo: dt: Mar2009 vid: 20 iid: 3 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 105252436 41139765 2010489705 10.3766/jaaa.20.3.2 NLM19927686 105252436 ppf: 161 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Long-term signal-to-noise ratio at the input and output of amplitude-compression systems. aug: au: Naylor G Johannesson RB affil: Oticon Research Centre Eriksholm, Snekkersten, Denmark. gn@oticon.dk sug: subj: Digital Compression Methods Hearing Aid Fitting Methods Noise Perceptual Distortion Signal Transduction Time Factors Audiometry Methods Auditory Threshold Comparative Studies Computer Simulation Hearing Aids Radio Waves Reproducibility of Results Software Speech Discrimination Tests Speech Perception Systems Analysis ab: We present measurements showing that the long-term signal-to-noise ratio (SNR) at the output of an amplification system that includes amplitude compression may be higher or lower than the long-term SNR at the input, dependent on interactions among the actual long-term input SNR, the modulation characteristics of the signal and noise being mixed, and the amplitude compression characteristics of the system under test. The effects demonstrated with the measurements shown here have implications for choices of test methods when comparing alternative hearing aid systems. The results of speech-recognition tests intended to compare alternative systems may be misleading or misinterpreted if the above interactions are not considered. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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