This　paper　keeps　attention　on　the　idea　of　the　Model-Based　Design　and　proposes　a　efficient　and　economical　approach　for　designing　a　new　stop-band　filter.　To　making　full　use　of　the　resources　in　Matlab/Simulink,　works　like　the　audio＇s　spectrum　analysis,　filter　parameters＇　selection,　stop-band　filter　model＇s　creation,　functional　verification,　HDL　code＇s　automatic　generation,　Modelsim　simulation,　and　the　subjective　and　objective　evaluation　of　stop-band　filter　can　all　be　achieved　in　the　visible　virtual　platform.　From　design　concepts　to　hardware　realization,　the　whole　process　is　finished　in　one　way　and　every　step　tightly　connects　with　each　other.　This　paper　certificates　and　validates　filter＇s　performance　from　three　levels　to　make　sure　that　the　band-stop　filter　designed　by　this　way　has　a　good　result　both　in　spectrum　displaying　and　subjective　evaluation　by　ears.　The　filter　designed　in　this　paper　can　be　taken　as　an　ideal　band-stop　filter　example　and　can　be　helpful　for　digital　filter　design.