Exhibit B JOINT FILING AGREEMENTJoint Filing Agreement • April 8th, 2009 • Relational Investors LLC • Household audio & video equipment
Contract Type FiledApril 8th, 2009 Company IndustryIn accordance with Rule 13d-l(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, $.01 par value, of Harman International Industries, Inc. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filing. In evidence thereof, the undersigned hereby execute this Agreement this 8th day of April, 2009.