... the cost WTB voice ic series--Voice chip, ic chip, voice ic, sound ic, 84 seconds,OTP, Sound IC Series, ics Features* Low cost ... 6Khz. The higher sampling rate , the better sound quality and shorter duration time.* With SOP and DIP package* Operating voltage: 2.2 ~ 5 ... ~ 5.5V ApplicationAuto, electric vehicles, medical equipmentpromotional ads, image keepsakes and some electronic products, etc.