Audio Technica ATND1061LK Operation Manual page 4

To eliminate the disadvantages of the talker-tracking method, it is necessary to improve tracking accuracy and speed. The
classical method conventionally used to detect the audio direction is to search for the direction with the highest power and
define this as the direction where the talker is located. With this method, the tracking accuracy can be improved by
averaging the signals received by the microphone over a long period of time, but the difficulty in aiming the beam in different
directions at high speed results in insufficient speed for practical applications.
However, the proprietary algorithm developed by Audio-Technica uses the lack of correlation between audio and noise to
obtain faster speed and higher accuracy without sacrificing the number of calculations and accuracy required for the search
and with no need to average over a long period of time. The direction detection is 26 times faster and the direction accuracy
is 60% better than the conventional method. The resulting leeway in the number of calculations can be assigned to the
VAD processing.
Microphone coverage functions
Voice activity detection (VAD)
The ATND1061 is equipped with a VAD function that prevents the beam from being aimed at typing sounds and similar
conference room sounds determined to be unnecessary noise. Online conference software of recent years is equipped
with excellent noise removal functions, but the VAD function does not focus on unnecessary sounds at the microphone
coverage stage, thereby allowing for accurate detection of the talker and good sound quality requiring minimal post-
processing.
Beam sensitivity
The "Beam Sens" parameter of the ATND1061 makes it possible to adjust the accuracy of talker detection. The "Mid"
setting is sufficient for most general conference rooms, but it is recommended to use the "High" setting in situations such
as when you want to pick up even the quietest sounds with the microphone and when the beginning of the recording is lost
due to issues such as audio reflections in the room. On the other hand, the "Low" setting is recommended if you want to
focus on the audio more in situations with a lot of ambient noise. Be aware that the "High" setting, with its high beam speed
and fast gate, increases the chance for a false trigger, in which some other noise is identified as a talker. The "Low" setting,
with its slower beam speed and gate, decreases the chance for a false trigger.
Camera linking
With the talker-tracking method, the ATND1061 beamforming microphone can identify the direction of the talker, so it is
equipped with a function that uses this feature in a manner useful for controlling the camera.
In addition to the microphone coverage range, the camera area can also be set. When the talker enters the specified range,
the number of that range is output. The ATND1061 supports protocols such as Visca over IP format, which allows
configuration related to camera control without complicated settings just by associating area numbers with camera preset
numbers. The IP command can also be used to output the coordinates of the talker together with the area number.
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