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EXTERNAL SPEAKER
The 3.5mm "External Speaker" jack located on the Duet's connector panel can be
used to connect any type of amplified speakers. The external speakers will be used
by the Duet to play sound and the Duet's internal speaker will be muted.
SPECIFICATIONS
Compatibility
Windows 95 and up, MAC OS, and Linux
Connectivity
USB connector – PC or Laptop
connectivity 3.5mm connection – for
external loudspeakers or headphone
Size
3.75 in x 1.25 in x 4.5 in (W x H x D)
Weight
0.55 lbs (with USB cable)
Power
USB power for PC and Laptop
(LED will illuminate)
Performance
Speech processing and echo suppression
at 32KHz sampling rate
Plugging in external speakers will
automatically turn off the internal
loudspeaker
Audio
100% Full duplex performance – No
attenuation (either way) during full duplex
Acoustic echo cancellation >40 dB
High-end performance: conforms to
ITU-T G.167 standard
Noise cancellation >10dB
Residual echo is suppressed to the
environment noise level to prevent
artificial ducking of signal
Voice-level equalization
Convergence speed 40 dB/sec
Tail length (200ms)
Convergence during full duplex (no
recovery time after full duplex)
Low delay (10 msec)
Bandwidth 100Hz – 16KHz for
speech processing
Integrated loudspeaker
Mute button and loudspeaker
volume control buttons (LED will
blink in mute mode)
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