🌐EnglishEnglishDeutschEspañolFrançaisEntityQ455069· pop 5· linked from 13 articlesSpeech transmission indexmeasure of speech transmission qualityAvailable in 4 languagesFrançaisDeutschEstonianvia Wikidata sitelinks · CC0ConnectionsInternational Organization for StandardizationEntityreflectionEntityCategoriesCommunicationHearingHuman voiceSoundWaves