Abstract: To enable spectrum shaping also when excess band is used, at least one set of spectral flatness requirements amongst two or more sets comprises at least at least a first parameter value for a first in-band range, at least a second parameter value for a second in-band range and at least a third parameter value for the excess band range, and a set to be used is selected at least based on information on the use of the excess band.

Abstract: An actuator assembly to produce mechanical power for a function in a bicycle or any other handlebar-steered device, which actuator assembly comprises a twisting part on the handlebar tube, a part to transmit the twisting motion into the tube from its open end, and equipment fitted into the handlebar tube to convert the twisting motion into linear motion. Equipment to convert the twisting motion of twisting part into linear motion of the power transmission device is fitted inside the handlebar tube and the twisting motion is transmitted by means of part which is fitted through the open end of said tube.