Samson QV, QE owner manual Pattern reduces signal coming

U S I N G Y O U R Q E / Q V H E A D S E T

In the QE Headset, three noise cancelling modes operate together to provide 20 - 30 dB of noise reduction: First, the small size of the mic capsule and the short distance between front and rear ports reduces the sensitivity at 1 kHz to far field noise by 15 dB compared to the close talking response. Secondly, as shown in the frequency response graph below, noise at lower frequencies is

								additionally attenuated. And,
	-55					-35		finally, the bi-directional polar
dB (re 1 Volt/microbar)							dB(re1Volt/Pascal)	pattern reduces signal coming
	-60	CLOSE	TALKING	(1cm)		-40
								from a 90° angle by 20 dB
	-65					-45		more (and random signal by 5
	-70							dB more) compared to signal
						-50
								originating from directly in front
		FAR FIELD (1m)
	-75					-55
								of the mic capsule.
	100	Hz	500 1000 2000		5000 10000 20000			The frequency response of

QE Frequency Response

the QV Headset (which is virtu-

ally flat across the entire audible range) is shown in the illustration on the follow- ing page:

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