fig3 is the sectional schematic view of an open style active noise suppressing receiver of the invention embodiment and fig3 b is the sectional view along the line of b b as shown in fig3 compared with fig9 23 24 and 36 it differs from them in that its noise collecting module is the same as that in fig2 the difference between the receiver module and that in fig9 and 36 lies in the acoustically transparent diaphragm 23 in fig9 is placed between the screen 3 and the diaphragm support 22 a in the receiver module in fig2 and feedback pickup 8 a which can insulate sound and is fixed by sound proof anti vibration pad 20 a is put between acoustically transparent diaphragm 23 and diaphragm support 22 a feedback pickup 8 a can receive sounds input from the sound hole on diaphragm support 22 a screen 3 combines with the external wall of acoustic channel 21 rather than with the internal wall of cylinder 4 a acoustic channel 21 a is available between receiver 9 and the internal wall of cylinder 4 a 0217 fig3 is the sectional schematic view of an open style active noise suppressing receiver of the invention embodiment and fig3 b is the sectional view along the line b b as shown in fig3 compared with fig3 and 38 it differs from them in that its noise collecting module is the same as that in fig3 the difference between the receiver module and that in fig3 lies in screen 3 does not combine with the external wall of acoustic channel 21 but with the internal wall of cylinder 4 a acoustic channel 21 a is available between receiver 9 and the internal wall of cylinder 4 a due to the.