Kev txo suab nrov: qhov sib txawv ntawm 'suab nrov haters' thiab 'distortion haters'



Kev txo suab nrov: qhov sib txawv ntawm 'suab nrov haters' thiab 'distortion haters'

Cov kws kho mob Physicist Audiologist (io)
dr. ir. Rolph Houben ntawm Academical
Medical Center (AMC) Amsterdam (Lub Netherlands)
tshawb xyuas qhov txo suab nrov tiag tiag
ua rau tus neeg mob. Kauj ruam nws
unravels qhov paub tsis meej ntawm kev txo suab nrov.

Nyob rau ntawm Department of Clinical and Experimental
Audiology ntawm AMC, Rolph
Houben, ua ke nrog Inge Brons
Msc., ua kev tshawb fawb soj ntsuam hauv
txo suab nrov ntawm cov khoom siv hnov ​​lus. Nws
piav qhia: “Hauv peb qhov chaw kho mob cov neeg siv
ntawm kev txo suab nrov ua lub luag haujlwm tseem ceeb. Ua li cas
qhov nyuaj tsis hnov ​​lus tau txais txiaj ntsig los ntawm (ib channel) suab nrov
txo qhov kev pab hnov ​​lus? Nws puas ua haujlwm rau nws, yog
muaj ib tug functional ntug? Cov no yog cov lus nug kuv xav tau
teb txij li thaum kuv pib qhov kev tshawb fawb no hauv 2009. Kuv kawm
physics thiab peb koom tes nrog cov kws tshaj lij hluav taws xob
nyob rau Radboud Lub Tsev Kawm Ntawv Nijmegen thiab
Eindhoven
Technical University (TU/e)
, tab sis peb tsis tsim algorithms
rau lub suab nrov txo peb tus kheej. "

Txhua lub tshuab hnov ​​​​lus niaj hnub siv ob lub thev naus laus zis: compression
thiab txo suab nrov. “Remarkably, muaj ib
ntau ntawm kev soj ntsuam kev tshawb fawb hauv compression, tab sis nyuaj
rau hauv kev txo suab nrov. Muaj laj thawj rau qhov ntawd. Ua ntej,
txo suab nrov tsis muaj kev cuam tshuam ncaj qha rau kev nkag siab
ntawm lus. Qhov thib ob, kev txo suab nrov yog ib qho nyuaj
phenomenon, ib 'black box'. Tsis paub tias yog dab tsi tiag
hauv nws. Nws kuj yog qhov zoo kawg nkaus uas cov khoom siv hnov ​​lus muaj
txo suab nrov, tab sis hais tias lawv feem ntau tsis tuaj yeem ua tau zoo
tau mloog. Qhov ntawd yog qhov zoo kawg li, vim hais tias suab nrov txo tau
theoretically yuav tuned nyob rau hauv ntau txoj kev. Peb paub me ntsis ntawm
nws thiab yog li ntawd tuaj yeem kho me ntsis rau nws. Yog vim li cas? Tsis yog
nws yuav tsum tau kho nws raws li ib tug neeg xav tau kev pab thiab nyiam?”

Tsawg zog

Qhib lub thawv dub ua pov thawj kom deb ntawm qhov yooj yim. “Koj
xav paub dav dav li cas manufacturers mus kom ze
qhov kev kawm thiab koj yuav tsum paub los ntawm kev rov qab engineering.
Koj tuaj yeem pib tawm los ntawm kev ntsuas hauv lub cuab yeej
nws ua dab tsi thiab los ntawm kev kawm cov ntaub ntawv muaj rau
tsim kom muaj li cas nws roughly ua haujlwm. Qhov twg yog tsim los
tom qab hauv kev tshawb fawb thoob ntiaj teb, yog lub suab nrov ntawd
kev txo qis tsis txhim kho kev nkag siab ntawm kev hais lus.
Nws kuj tau pom meej tias cov neeg mob tib lub sijhawm
feem ntau ua tus nqi txo lub suab nrov ntawm lawv lub rooj sib hais
pab. Qhov no ua rau cov lus nug tshiab: vim li cas tib neeg thiaj li muaj nuj nqis
ib yam dab tsi uas tsis ua rau kev nkag siab zoo dua
ntawm kev hais lus? Thiab yog lub suab nrov txo ntawm ib hom
zoo dua li lub suab nrov txo ntawm lwm lub npe?

Cov lus teb rau thawj lo lus nug yuav raug txiav
yooj yim heev. “Kev tsis txaus siab thib ib thiab tseem ceeb
vim li cas thiaj yuav khoom siv mloog yog kev nkag siab
ntawm kev hais lus hauv suab nrov tom qab", Houben tsim.
"Qhov ntawd yuav tsis tau txhim kho los ntawm kev txo suab nrov, tab sis
tsim nyog siv zog kom ncav cuag ib theem ntawm kev nkag siab
ntawm kev hais lus pov thawj kom tsawg, ua tsaug rau lub suab nrov txo.
Qhov no muab cov lus piav qhia txog vim li cas tib neeg
tus nqi suab nrov txo: nws tsis tshua muaj log. "

Muab piv rau

Tom qab ntawd lo lus nug thib ob: qhov sib txawv zoo li cas
suab nrov txo tshuab tiag tiag? “Kom nrhiav cov lus teb
rau lo lus nug no peb xaiv ua hauj lwm ntawm nws tus kheej
los ntawm kev txhawb nqa los ntawm cov tuam ntxhab. Peb xav kom zam
ib qho kev tawm tswv yim tias kev txhawb nqa yuav cuam tshuam rau peb
tshawb fawb tau. Muab qhov tseeb tias kev siv zog mloog yog
ib qho kev ntsuas rau kev ua tau zoo ntawm kev txo suab nrov, peb
tuaj yeem txiav txim siab qhov ua tau zoo ntawm lub suab nrov txo los ntawm a
kev mloog zoo rau kev sim," Houben qhia.

Houben thiab Brons ua qhov kev sim siab ntawm a
pab pawg theem ntawm lub hauv paus ntawm cov lej xeem uas
tau tsim nyob rau hauv Vrije Universiteit (VU) . Nws ua pov thawj
tias lub sij hawm teb ntawm cov neeg xeem tau txhim kho
los ntawm kev txo suab nrov. Kev mloog lus yog ib txwm muaj
tshwj xeeb ntawm lwm yam Amsterdam University, VU.
Houben hais tias, "Yog lawm", tab sis lawv lub kaum sab xis txawv.
Lawv mus mloog kev siv zog los ntawm lub cev
thiab lub siab lub ntsws, piv txwv li los ntawm kev ntsuas lub
tub kawm. Rau peb qhov tseem ceeb tshaj plaws yog tsim
dab tsi suab nrov txo technically ua, nrog lub hom phiaj rau
thaum kawg txhim kho cov neeg siv kev paub. Qhov ntawd yog qhov nyuaj
txoj hauj lwm, vim hais tias qhov tseeb tsis muaj ib qho xwb
lub thawv dub, tab sis muaj ob lub thawv dub. Peb twb
tsim los uas peb tsis paub xyov dab tsi nyob hauv
cov khoom siv. Tsis tas li ntawd, peb tsis paub yuav ua li cas lub
tus neeg mob ua nws ib yam. Yog li thawj zaug koj ntsib ntau dua
lus nug; tom qab ntawd koj tuaj yeem pib daws lawv. "

Cov nyhuv tsim

Houben thiab Brons tau siv ntau lub pob ntseg,
haum lawv thiab ua cov ntaub ntawv ntawm cov zis rau ib qho khoom siv dag zog
taub hau. Lawv ua qhov ntsuas no ob zaug:
nrog thiab tsis muaj suab nrov txo tau qhib. Houben:
“Qhov no sib txawv ntawm lub suab nrov txo switched
on thiab switched off enabled ib tug sib piv nyob rau hauv lub
tib yam khoom, tab sis ntawm chav kawm tsis muaj kev sib piv ntawm
ntau yam khoom siv. Yuav ua li cas koj thiaj nrhiav tau lub suab nrov
kev txo qis ua haujlwm zoo tshaj? Nov yog tag nrho cov lus nug tseem ceeb,
raws li lub suab nrov txo rau qhov nyuaj tsis hnov ​​lus
ua ib qho tseem ceeb ntawm kev xaiv rau ib qho kev pab cuam hnov ​​lus. "
Houben lim cov kaw cia li ntawd txhua yam
cov cuab yeej kuaj tsis muaj suab nrov txo suab nrov
tib yam, haum raws li tus qauv ntawm yuav ua li cas lawv
yuav tsum suab. Qhov no tau tom qab kuaj xyuas nrog lub
nug seb cov neeg kuaj puas tuaj yeem hnov ​​qhov sib txawv.
Tom qab ntawd, lub suab nrov txo tau hloov mus rau hauv tag nrho
khoom siv. “Qhov no ua rau muaj kev sib piv ncaj qha ntawm lub suab nrov
Kev txo qis ntawm ntau yam khoom siv hnov ​​​​lus", Houben hais.
"Nws tshwm sim tias tib neeg nyiam qee lub tshuab dhau
lwm tus. Qhov no suab zoo heev, tab sis qhov tseeb qhov txawv no
nyob rau hauv kev ntsuam xyuas enables ib qho tseem ceeb cov lus xaus.
Thawj thawj zaug nws yog kev kho mob tsim kom muaj cov nyhuv
ntawm kev txo suab nrov ntawm kev siv zog mloog yeej txawv
nruab nrab ntawm cov khoom siv hnov ​​lus sib txawv. "

Tus kheej nyiam

Hauv AMC tshawb fawb ib txwm hnov ​​​​zoo li nyuaj
ntawm hnov ​​cov neeg koom. Kev soj ntsuam ntawm kev tshawb fawb
cov ntaub ntawv ntawm cov neeg kuaj hnov ​​​​lus ib txwm kawm, uas
yuav luag txhua tus muaj qee yam kev nyiam. Feem ntau,
nws tsuas yog ua tau kom txo qis suab nrov ntawm tus nqi
qhov zoo ntawm cov teeb liab hais lus. Qee tus neeg kuaj mob
raws li lawv txoj kev xav ntawm lub suab nrov ntawm qhov system
muaj peev xwm txo tau. Lwm tus tau tsom ntau dua rau ntawm
tus nqi ntawm distortion uas tau qhia los ntawm ib qho
suab nrov txo qhov system. Nws zoo nkaus li koj muaj 'suab nrov haters'
thiab 'distortion haters'. Ib yam li nrog piv txwv
kev xaiv ntawm HI-FI systems, tus kheej nyiam ua si
lub luag haujlwm tseem ceeb hauv qhov no. “Peb tseem tsis tau muaj peev xwm
txhawm rau txheeb xyuas seb qhov sib txawv no puas yog kho mob
cuam ​​tshuam. Txawm li cas los xij, cov txiaj ntsig tau piav qhia vim li cas nws thiaj li
nyuaj ua qhov kev tshawb fawb no ", hais tias Houben,
“Lub suab xim ntawm lub pob ntseg yog qhov tseem ceeb
yam. Tab sis thaum koj cais lub suab nrov txo raws li ib tug
ib qho tseem ceeb, qhov sib txawv ntawm cov suab nrov txo
algorithms tshwm sim."

Ib kauj ruam dhau los ntawm qhov ntawd: qhov txawv no yog dab tsi
thiab cov kev sib txawv no puas nyob ntawm qhov xwm txheej?
Houben: “Rau cov neeg hnov ​​​​lus ib txwm muaj tsawg zuj zus
kev siv zog mloog ua pov thawj tias nyob ntawm hom
ntawm lub suab nrov tom qab. Txawm hais tias cov txiaj ntsig no siv tau
rau qhov nyuaj ntawm kev hnov ​​lus thiab ntawm tus kheej theem
tseem tsis tau meej. Peb mus hauv peb qhov kev tshawb nrhiav thiab cia siab tias
tias muaj ntau yam kawm txog kev siv suab nrov
txo cov khoom pab hnov ​​lus.”

Leendert van der Ent, tus thawj coj ntawm Audiology Infos North of Europe.

Yees duab: © Bureau Lorient Communicatie



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