🌐EnglishEnglishEspañolItalianoРусский中文日本語EntityQ2699730· pop 7· linked from 14 articlesQuadrature mirror filterdigital signal filterAvailable in 7 languagesEspañol日本語РусскийItalianoCzechsimplevia Wikidata sitelinks · CC0ConnectionsInternational Standard Book NumberEntityfrequencyEntityCategoriesDigital signal processingFilter theoryWavelets