ASLP 4045 Exam 2 With Correct Answers
History cof cAmplification c- cCORRECT cANS✔✔1. cCupping- cincreased c12dB cand ca
cgain cof c1,000 cHz cled cto cear ctrumpets
2. cElectrical cinstruments ccame cin c1800s
3. cPersonal cdevices ccame cin c1900s cthat ccontained cbattery, ccarbon cmicrophone,
cand cmagnetic cearphone
4. cVacuum ctube creplaced ccarbon cinstruments c
5. cTransistor ctechnology ccame cabout cin c1947
6. cFirst cBTE c1950s c
7. cAll cin cthe cear c1960s
8. cAnalog caids c1980s c(windex csenso cwas cfirst) c
9. cRITE cand cRIC cin c2004
Hearing cAid cComponents c- cCORRECT cANS✔✔microphone, camplifier, creceiver, cand
cbattery
Microphone c- cCORRECT cANS✔✔takes cacoustic cenergy cor csound cpressure cand
ctransduces cit cto celectrical cenergy
Amplifier c- cCORRECT cANS✔✔after cthe celectric csignal cleaves cthe cmicrophone, cit cis
cconverted cinto ca cdigital ccode c(using canalog cto cdigital cconverter) cso cthat cit ccan cbe
camplified cby cthe cprocessor
Receiver c- cCORRECT cANS✔✔another ctransducer cthat ctakes cthe camplified
celectrical csignal cand cconverts cit cback cto can cacoustic csignal cthen cdelivers cit cto cthe
cear
Batteries c- cCORRECT cANS✔✔power csource cfor cthe chearing caid
What ctype cof cbatteries cdo cHA cuse? c- cCORRECT cANS✔✔Typically cuse c1.4 cvolt
csingle ccelled czinc cair cbattery c(5 csizes: c5-red, c10-yellow, c312-brown, c13-orange,
cand c675-blue)
How cdoes ca cdigital chearing caid cprocess csound? c- cCORRECT
cANS✔✔Microphone---> canalog/digital csystem---> csignal cprocessor---> cdigital/analog
csystem---> creceiver
Articulation cIndex c- cCORRECT cANS✔✔a ccalculation cthat ccan cpredict cthe camount
cof cspeech cinformation cthat cis caudible cwith ca cgiven caudiogram c(use ccount cthe cdot)
, Count-the-Dot c- cCORRECT cANS✔✔Used cto cfind cAI. cCount cthe cdots cabove cthe
cthreshold cline cand csubtract cfrom c100%
Bi-CROS c- cCORRECT cANS✔✔microphone con cboth cears cwith cmore camplification
cprovided cto cthe cbetter calbeit cimpaired cear. cOne cdead cear cand cone cHA cfittable
CROS c- cCORRECT cANS✔✔contralateral crouting cof cthe csignal cmicrophone conly con
cpoorer cear, cvery cmild cgain cto cnormal cear; cunilateral chearing closs
Bone cAnchored cHearing cAid c(BAHA) c- cCORRECT cANS✔✔surgically cimplanted
ctitanium cvibrator cunit cinto cthe cmastoid cbone, ccoupling cthe cunit cvia ctranscutaneous
cconnector cto cthe cmicrophone
Bone cConduction cHearing cAid c- cCORRECT cANS✔✔have ca cmicrophone cand
camplifier choused ceither cin ca cbehind cthe cear cor cbody caid cattached cwith ca cmetal
cheadband cto ca cbone cvibrator con cthe cmastoid cand care cwired ctogether
Middle cEar cImplant c- cCORRECT cANS✔✔Vibrant cSoundbridge cavailable cfrom
cMedEl cCorporation, cconsist cof can cexternally cworn cmicrophone cand cprocessor cthat
cdrives ca csurgically cimplanted cvibrator cthat cis cattached cto cone cof cthe cmiddle cear
cossicles cinstead cof cusing cthe ctympanic cmembrane cas ca cstimulator
Directional cMicrophones c- cCORRECT cANS✔✔two cmicrophones cbuilt cinto cthe
cdevice: cfront cfacing caims cto cpick cup cdesired csignal, crear cfacing caims cto csuppress
cthe cunwanted cbackground cnoise. cThey cpermit cvarying csensitivity cto csound ccoming
cfrom ca cgiven cdirection cto cimprove cSNR
Polar cPlot c- cCORRECT cANS✔✔It cis cthe cgraphical cdisplay cof cthe coutput cfrom
cdifferent cdirections c(types: cbidirectional, ccaidoid, chypercardiod, cand csupercardoid)
Heairng cAid cFunctions c- cCORRECT cANS✔✔Gain- cthe clevel cof camplification cgiven
cby cthe chearing caid c
Maximum cPower cOutput- cthe cupper climit cof coutput cfor ca chearing caid c(differs cby
cfrequency)
Peak cClipping- cpoint cat cwhich csounds care cout cin corder cto cmaintain ccomfort c
Compression- ccontrols cthe camount cof cvolume cgiven cto cincoming csounds cto cachieve
cmaximum ccomfort cand caudibility
Analog cHA c- cCORRECT cANS✔✔sounds care cprocessed cthrough canalog cmeans
c(not cmany care cstill cdone cthis cway, cif cany)
Digitally cProgrammable c- cCORRECT cANS✔✔setting cprocessed cdigitally csound
cprocessed cvia canalog cmeans c(not cmany clike cthis cleft)
History cof cAmplification c- cCORRECT cANS✔✔1. cCupping- cincreased c12dB cand ca
cgain cof c1,000 cHz cled cto cear ctrumpets
2. cElectrical cinstruments ccame cin c1800s
3. cPersonal cdevices ccame cin c1900s cthat ccontained cbattery, ccarbon cmicrophone,
cand cmagnetic cearphone
4. cVacuum ctube creplaced ccarbon cinstruments c
5. cTransistor ctechnology ccame cabout cin c1947
6. cFirst cBTE c1950s c
7. cAll cin cthe cear c1960s
8. cAnalog caids c1980s c(windex csenso cwas cfirst) c
9. cRITE cand cRIC cin c2004
Hearing cAid cComponents c- cCORRECT cANS✔✔microphone, camplifier, creceiver, cand
cbattery
Microphone c- cCORRECT cANS✔✔takes cacoustic cenergy cor csound cpressure cand
ctransduces cit cto celectrical cenergy
Amplifier c- cCORRECT cANS✔✔after cthe celectric csignal cleaves cthe cmicrophone, cit cis
cconverted cinto ca cdigital ccode c(using canalog cto cdigital cconverter) cso cthat cit ccan cbe
camplified cby cthe cprocessor
Receiver c- cCORRECT cANS✔✔another ctransducer cthat ctakes cthe camplified
celectrical csignal cand cconverts cit cback cto can cacoustic csignal cthen cdelivers cit cto cthe
cear
Batteries c- cCORRECT cANS✔✔power csource cfor cthe chearing caid
What ctype cof cbatteries cdo cHA cuse? c- cCORRECT cANS✔✔Typically cuse c1.4 cvolt
csingle ccelled czinc cair cbattery c(5 csizes: c5-red, c10-yellow, c312-brown, c13-orange,
cand c675-blue)
How cdoes ca cdigital chearing caid cprocess csound? c- cCORRECT
cANS✔✔Microphone---> canalog/digital csystem---> csignal cprocessor---> cdigital/analog
csystem---> creceiver
Articulation cIndex c- cCORRECT cANS✔✔a ccalculation cthat ccan cpredict cthe camount
cof cspeech cinformation cthat cis caudible cwith ca cgiven caudiogram c(use ccount cthe cdot)
, Count-the-Dot c- cCORRECT cANS✔✔Used cto cfind cAI. cCount cthe cdots cabove cthe
cthreshold cline cand csubtract cfrom c100%
Bi-CROS c- cCORRECT cANS✔✔microphone con cboth cears cwith cmore camplification
cprovided cto cthe cbetter calbeit cimpaired cear. cOne cdead cear cand cone cHA cfittable
CROS c- cCORRECT cANS✔✔contralateral crouting cof cthe csignal cmicrophone conly con
cpoorer cear, cvery cmild cgain cto cnormal cear; cunilateral chearing closs
Bone cAnchored cHearing cAid c(BAHA) c- cCORRECT cANS✔✔surgically cimplanted
ctitanium cvibrator cunit cinto cthe cmastoid cbone, ccoupling cthe cunit cvia ctranscutaneous
cconnector cto cthe cmicrophone
Bone cConduction cHearing cAid c- cCORRECT cANS✔✔have ca cmicrophone cand
camplifier choused ceither cin ca cbehind cthe cear cor cbody caid cattached cwith ca cmetal
cheadband cto ca cbone cvibrator con cthe cmastoid cand care cwired ctogether
Middle cEar cImplant c- cCORRECT cANS✔✔Vibrant cSoundbridge cavailable cfrom
cMedEl cCorporation, cconsist cof can cexternally cworn cmicrophone cand cprocessor cthat
cdrives ca csurgically cimplanted cvibrator cthat cis cattached cto cone cof cthe cmiddle cear
cossicles cinstead cof cusing cthe ctympanic cmembrane cas ca cstimulator
Directional cMicrophones c- cCORRECT cANS✔✔two cmicrophones cbuilt cinto cthe
cdevice: cfront cfacing caims cto cpick cup cdesired csignal, crear cfacing caims cto csuppress
cthe cunwanted cbackground cnoise. cThey cpermit cvarying csensitivity cto csound ccoming
cfrom ca cgiven cdirection cto cimprove cSNR
Polar cPlot c- cCORRECT cANS✔✔It cis cthe cgraphical cdisplay cof cthe coutput cfrom
cdifferent cdirections c(types: cbidirectional, ccaidoid, chypercardiod, cand csupercardoid)
Heairng cAid cFunctions c- cCORRECT cANS✔✔Gain- cthe clevel cof camplification cgiven
cby cthe chearing caid c
Maximum cPower cOutput- cthe cupper climit cof coutput cfor ca chearing caid c(differs cby
cfrequency)
Peak cClipping- cpoint cat cwhich csounds care cout cin corder cto cmaintain ccomfort c
Compression- ccontrols cthe camount cof cvolume cgiven cto cincoming csounds cto cachieve
cmaximum ccomfort cand caudibility
Analog cHA c- cCORRECT cANS✔✔sounds care cprocessed cthrough canalog cmeans
c(not cmany care cstill cdone cthis cway, cif cany)
Digitally cProgrammable c- cCORRECT cANS✔✔setting cprocessed cdigitally csound
cprocessed cvia canalog cmeans c(not cmany clike cthis cleft)
