A circuit for generating 100 Hz or 1 KHz square wave signals – Matt's Tech Pages
作業用BGM】1kHz サイン波【15分耐久】 - YouTube
1KHZ SINE WAVE FOR MEASURING SYSTEM PERFORMANCE – Virtual Zero Audio Store
Amazon.com: Velleman MK105 Signal Generator Kit, 1kHz Fixed Frequency : Automotive
1khz BandPass filter - YouSpice
SciELO - Brasil - Timpanometria com tons teste de 226 Hz e 1 kHz em um grupo de lactentes com indicadores de risco para deficiência auditiva Timpanometria com tons teste de 226