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MA NU AL O F AC OU ST IC E CH O CAN CE LL ER
Digital signal processing
Echo cancellation(adaptive)、background noise
reduction、gain control
Sound transmission gain:10 dB
Background noise reduction:14 dB
Frequency response 20Hz—20kHz
THD =0.002%@1kHz,+12dBu
Microphone input
XLR /6.35 mm plug
maximum input level:18dBu
Input impedance:=5KΩ
Input gain:0-50dB
Line output
XLR / 6.35 mm plug
maximum output level:18dBu
Output impedance:100Ω (Balance)
Environmental
requirements
Operating temperature:0℃－50℃
Storage temperature:-30℃－70℃
Humidity: 80% maxi mum, no n-condensing
General characteristics
Surface decoration: metal front panel
Plating-coated steel chassis
Dimensions H ×W×D:430× 242× 44 mm
Display LED
Weight (kg) 2.4Kg
Power voltage 12V DC,2A
Power consumption <10W
Par ts Warranty 1 year
Audio echo cancel le r pr ov ides the most advan ce d ul tr a-wideband
acoustic e ch o ca nc el lation technolo gy i n th e in dustry to completel y
eliminate ac ou st ic e cho between speak er s an d mi crophones. Its
echo path leng th c an b e se t to support the maxi mu m ec ho t ail up to
512ms and ca n be d et ec te d with both parties t al ki ng a t the same
time. It is also e ffecti ve e ve n in s trong background no is e an d
nonlinea r di st or tion environment, a nd t he r es idual echo during t he
double-t al ki ng d oes not increase; Bui ld -i n no ise suppression
algorith m ca n el im in ate environment al n oi se . In addition,
automatic ga in c on tr ol algorithm is add ed . Mo re s urprisingly, it
brings ful l ad ap ta tion with no debuggin g re qu ir ed to audio
engineer s.
IN TRO DUC TIO N
01
Front Panel Indications ：
The f ront panel of the equ ip me nt i s provided with power s up pl y
indicato r an d st at us i ndicator,d is pl ay ing the running sta tu s of
equipmen t. Wh en t he r elative channel i nd ic at or front panel glow s
green feed ba ck c an ce llation protoco l wi ll b e
standby.Convers el y,indic at or g lo ws orange and echo ca nc el la tion
funcion wi ll b e en ab led.
Rear Panel Indications：
(1) Power: po we r su pply switch
(2) 12V/2A :P ow er s upply socket
(3) LAN:Ne tw or k ac cess,used for upg ra di ng p rogram.
(4)BYPAS S: By pass functions sele ct io n.
(5) Audio Out: Ou tp ut c ha nnel , with XLR / 6.35 mm plu g，
outputti ng t he a ud io s ignal of correspo nd i np ut c hannel after
processi ng .
(6) GAIN:A dj us t th e gain of correspond ch an ne l.
(7) Audin In:In pu t ch an nel,with XLR/6.35 mm p lu g.
!
WARNINGS
Keep th e de vi ce always fro m th e wa ter or mois tu re t o av oid cathi ng f ir e
or ele ct ri c shock.
US AGE
02 03
A/ D
DSP :A EC, ANS
D/ A
GA IN
A/ D
BYPA SS
D/ A
GA IN
AUD IO O UT 1
The si gnal pr ocess ed by DSP
will b e sent as a udio in put of
vide o confe renci ng host .
AUD IO I N 1
(MIC s ignal f rom a
mixe r,sou nd cons ole or ot her
devi ces)
AUD IO O UT 2
(Out put to th e audio d evice i n the
next s tage, for exam ple,p ower
ampl ifier ,soun d conso le.)
AUD IO I N 2
(Aud io outp ut sign al from
vide o confe rence .)
(1) Select t he s la ve c an on, XLR / 6.35mm plug a cc or di ng to the plug type
of the audio e qu ip me nt . Please note that th e co rr es ponding relatio ns hi p
between th e in pu t ch an nel and output chan ne l. F or e xample, the voice o f
the input ch an ne l is o ut put from the output c ha nn e 1 on ly.
(2) Adjust the ga in o f th e in pu t channel accordi ng t o th e si te eff ec t
GAIN(0~5 0D B) .
(3) Bypass f un ct io n setting.Push on “By pa ss X ”,the relative chan ne l
indicator fr on t pa nel glows green echo ca nc el la tion protocol wil l be
standby.Convers el y,indic at or g lo ws orange and echo ca nc el la tion funcion
will be enab le d.
SP ECI FIC ATI ONS
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