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Speech Transmission Index (STI) is a measure of speech transmission quality. The absolute measurement of speech intelligibility is a complex science. The STI measures some physical characteristics of a transmission channel (a room, electro-acoustic equipment, telephone line, etc.), and expresses the ability of the channel to carry across the characteristics of a speech signal. STI is a well-established objective measurement predictor of how the characteristics of the transmission channel affect speech intelligibility.

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rdfs:label	Speech Transmission Index (de) Speech Transmission Index (fr) Speech transmission index (en)
rdfs:comment	Der Sprachübertragungsindex, kurz STI (von englisch Speech Transmission Index), ist ein Maß für die Qualität, in der eine Übertragungsstrecke Sprache vom Sprecher zum Zuhörer überträgt. Als Übertragungsstrecke wird dabei eine akustische oder elektro-akustische Sprachsignal-Übertragung verstanden. Die Maßzahl STI beschreibt die zu erwartende Sprachverständlichkeit beim Zuhörer. (de) Le Speech Transmission Index (STI) est une mesure de l'intelligibilité de la parole. Cette mesure est dérivée de la fonction de transfert de modulation (FTM) qui évalue la dégradation des modulations d'amplitude par bandes de fréquences. (fr) Speech Transmission Index (STI) is a measure of speech transmission quality. The absolute measurement of speech intelligibility is a complex science. The STI measures some physical characteristics of a transmission channel (a room, electro-acoustic equipment, telephone line, etc.), and expresses the ability of the channel to carry across the characteristics of a speech signal. STI is a well-established objective measurement predictor of how the characteristics of the transmission channel affect speech intelligibility. (en)
foaf:depiction
dcterms:subject	Sound Hearing Waves Human voice Communication
Wikipage page ID	2430525 (xsd:integer)
Wikipage revision ID	1076342284 (xsd:integer)
Link from a Wikipage to another Wikipage	NTi Audio Intelligibility (communication) Reflection (physics) Psychoacoustics Sound 3M Hearing Echo (phenomenon) Reverberation International Electrotechnical Commission International Organization for Standardization Background noise Acoustical Society of America Waves Human voice Communication Netherlands Organisation for Applied Scientific Research Mean opinion score Impulse response List of IEC Technical Committees
Link from a Wikipage to an external page	http://www.ap.com/display/file/785 http://www.audeval.co.uk/speech-transmission-index-b-s-guide-fire-techs http://www.audiomatica.com/wp/%3Fp=1974 http://www.bedrock-audio.com/index.php/bedrock-stipameter http://www.embeddedacoustics.com/index.php/speech-transmission-index http://www.gold-line.com/dspsti.htm http://www.head-acoustics.de/eng/nvh_artemis_suite.htm http://www.ivie.com/index.php/products/instrumentation http://www.norsonic.com/en/products/sound_level_meters/sound_analyser_nor140/options/13__stipa/ http://www.studiosixdigital.com/audiotools/sti-pa/ https://www.svantek.com/lang-en/applications/34,stipa.html https://www.bksv.com/en/Search%3Fq=sti http://multimedia.3m.com/mws/mediawebserver%3FmwsId=SSSSSufSevTsZxtUoY_vo8_UevUqevTSevTSevTSeSSSSSS--&fn=VERIFIER_RevC_DMR.pdf http://www.nti-audio.com/en/products/xl2-sound-level-meter.aspx http://www.embeddedacoustics.com/index.php/isti http://www.head-acoustics.de/eng/telecom_acqua.htm http://www.headacoustics.com https://web.archive.org/web/20110123020015/http:/www.meyersound.com/support/papers/speech/section4.htm http://www.sengpielaudio.com/calculator-ALcons-STI.htm
sameAs	Speech transmission index Speech transmission index Speech transmission index Speech transmission index Speech transmission index Speech transmission index Speech transmission index
dbp:wikiPageUsesTemplate	dbt:Listen dbt:Refbegin dbt:Refend dbt:Reflist
thumbnail	wiki-commons:Special:FilePath/STI_CIS_Scale.png?width=300
description	A sample of a STIPA test signal from NTi Audio (en)
filename	Stipa demo.ogg (en)
title	"STIPA Test Signal" (en)
has abstract	Der Sprachübertragungsindex, kurz STI (von englisch Speech Transmission Index), ist ein Maß für die Qualität, in der eine Übertragungsstrecke Sprache vom Sprecher zum Zuhörer überträgt. Als Übertragungsstrecke wird dabei eine akustische oder elektro-akustische Sprachsignal-Übertragung verstanden. Die Maßzahl STI beschreibt die zu erwartende Sprachverständlichkeit beim Zuhörer. (de) Le Speech Transmission Index (STI) est une mesure de l'intelligibilité de la parole. Cette mesure est dérivée de la fonction de transfert de modulation (FTM) qui évalue la dégradation des modulations d'amplitude par bandes de fréquences. (fr) Speech Transmission Index (STI) is a measure of speech transmission quality. The absolute measurement of speech intelligibility is a complex science. The STI measures some physical characteristics of a transmission channel (a room, electro-acoustic equipment, telephone line, etc.), and expresses the ability of the channel to carry across the characteristics of a speech signal. STI is a well-established objective measurement predictor of how the characteristics of the transmission channel affect speech intelligibility. The influence that a transmission channel has on speech intelligibility is dependent on: * the speech level * frequency response of the channel * non-linear distortions * background noise level * quality of the sound reproduction equipment * echos (reflections with delay > 100ms) * the reverberation time * psychoacoustic effects (masking effects) (en)
gold:hypernym	Measure
prov:wasDerivedFrom	wikipedia-en:Speech_transmission_index?oldid=1076342284&ns=0
page length (characters) of wiki page	19071 (xsd:nonNegativeInteger)
sound recording	dbr:Speech_transmission_index__Sound__1
foaf:isPrimaryTopicOf	wikipedia-en:Speech_transmission_index
is Link from a Wikipage to another Wikipage of	STI-PA STIPA Alcon (disambiguation) Alcons Intelligibility (communication) Acoustical engineering Common Intelligibility Scale SII STI

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