(a) A director may waive any notice required by this chapter, the articles of incorporation, or bylaws before or after the date and time stated in the notice. Except as provided by subsection (b), the waiver must be in writing, signed by the director entitled to notice, and filed with the minutes or corporate records.
(b) A director's attendance at or participation in a meeting:
(1) Waives objection to lack of any required notice to him or her or defective notice of the meeting unless the director at the beginning of the meeting (or promptly upon his or her arrival) objects to holding the meeting or transacting business at the meeting and does not thereafter vote for or assent to action taken at the meeting, and
(2) Waives objection to consideration of a particular matter at the meeting that is not within the purpose or purposes described in the meeting notice, unless the director objects to considering the matter before action is taken on the matter.