The ornamental design for an auxiliary bicyclefrontfendernoise generator, as shown and described.
FIG. 1 is a top plan view of an auxiliary bicycle front fender noise generator showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a front perspective view thereof in inverted position and on a reduced scale with respect to FIG. 1 and shown attached to the front of a bicycle, which is shown in broken lines and forms no part of the claimed design.