COP-USA CM259VAIR-WF - Manual (Page 31)

ǏChannel Numberǐ Choose the channel no.
ǏBits Widthǐ 8bits / 16bits / 32bits optional.
ǏSampling Rate ǐ The effect will better with frequency increase.
ǏCompressionǐ Choose different mode to compress audio steam( about 10 tims).
Mark: Suggest keep the default setting in normal. Just click open
talk back function.
3.3.12 User
Design and specification are subject to change without prior notice 29