User guide

EasyTalk USB Tools
Vaddio EasyTalk USB Solution - Document Number 342-0449 Rev B Page 15 of 48
Loudspeaker Placement
The location of the loudspeakers within the conference room is a critical factor for the user’s experience. The
primary factor is to ensure a comfortable audio level (Sound Pressure Level) is producing the same level at all
participants within the room. Also, a minimum distance of 4 feet separation between the EasyMic MicPOD and
loudspeaker should be maintained for optimum audio conferencing performance. In addition, speaker placement
has special criteria associated with specific applications to improve intelligibility.
 Video Conferencing Application: In a videoconferencing application, human audible perception is
improved by the visual presence of the far-end participants. Therefore, the desire is for the audio
loudspeakers to be located near the LCD display. The combination of audio and video originating from a
single position presents a similar user experience to both the far-end and local participants of physically
being in the same room.
 Teleconferencing Application: In audio only type conferences, the desire is to produce an evenly
distributed sound level to all participants. If the loudspeakers represent a point source to the participants,
they will begin directing their speech at the loudspeaker (point source). This can distract from natural
conversations that are desired in a collaborative session. The recommendation is to add additional
loudspeakers in these scenarios to negate creating a single loudspeaker point source within the room.
The EasyMic Mixer/Amp uses a 2-channel class-D amplifier suitable for driving loudspeaker loads down to four
ohms. This allows two 8 ohm loudspeakers to be paralleled out of each amplifier channel supporting a maximum
of four (4) loudspeakers.
Typical Table Installation Arrangements:
The EasyMic Mic MicPODs can be arranged in a number of topologies to accommodate the conference room
furniture configurations. The diagrams below illustrate a few common conference room layouts.
Diagram: Very Small Conference Room (Huddle Room)
System with one (1) EasyUSB Mixer/Amp, one (1) EasyMic MicPOD one (1) EasyTalk Sound Bar and one (1)
HD-USB PTZ Camera.