SHIELDING APPARATUS FOR SHIELDING A HEARING AID FROM ENVIRONMENTAL NOISE CAPABLE OF IMPROVING SOUND DISCRIMINATION OF A SPEAKER AND A SHIELDING METHOD THEREOF

摘要

PURPOSE: A shielding apparatus for shielding a hearing aid from environmental noise and a shielding method thereof are provided to monitor environmental noise when necessary by using a timer of a DSP(Digital Signal Processor) IC(Integrated Circuit) chip.;CONSTITUTION: A shielding apparatus for shielding a hearing aid from environmental noise includes a microphone(100) receiving external sound. The shielding apparatus includes a DSP IC amplifier(200) amplifying the external sound received in the microphone. The shielding apparatus includes a receiver(400) outputting sound received from the outside. The shielding apparatus includes a digital memory toggle button switch(300) for changing an operation state of the DSP IC amplifier.;COPYRIGHT KIPO 2013;[Reference numerals] (220,270) Buffer memory; (230) Timer; (250) Equalizer; (S100) Noise shielded speech spectrum; (S120) Amplitude spectrum gain increase change; (S140) Amplitude maximum output limit; (S160) Db inverse conversion; (S20) Db conversion; (S40) Amplitude spectrum; (S60) Noise spectrum storing; (S80) {(noise+speech)-(noise)} spectrum