EXHIBIT 99.1

FOR IMMEDIATE RELEASE

              AMERICAN TECHNOLOGY CORPORATION AND GENERAL DYNAMICS
         ARMAMENT AND TECHNICAL PRODUCTS, INC. RESOLVE LICENSING DISPUTE

(SAN DIEGO, CALIFORNIA - APRIL 28, 2004) - AMERICAN TECHNOLOGY CORPORATION
(NASDAQ: ATCO) today announced that it and General Dynamics Armament and
Technical Products, Inc. (GD-ATP) have mutually agreed to resolve their disputes
in an amicable manner, and to dismiss the arbitration proceedings brought in
connection with the two license and sale agreements to which they were a party.
After due investigation of the disputes, GD-ATP and ATC agreed that neither was
liable to the other and that no party engaged in any wrongdoing. The resolution
has resulted in the termination of the two agreements, and in ATC assuming
GD-ATP's role in servicing certain LRAD customers previously serviced by GD-ATP.

ABOUT AMERICAN TECHNOLOGY CORPORATION
American Technology Corporation is Shaping the Future of Sound(R) by developing
and licensing its technology and intellectual property portfolio which includes:
the award-winning HSS(R) (HyperSonic(R) Sound Technology); NeoPlanar(R)
Technology; LRAD(TM) (Long Range Acoustic Device); PureBass(R) Sub-Woofer
Technology; and Stratified Field(R) Technology (SFT(R)). The Company is
establishing a strong portfolio of patents, trademarks, and intellectual
property including over 140 U.S. and foreign patents and patent filings to date.
For more information on the company and its technologies and products please
visit our web site at www.atcsd.com.

SAFE HARBOR STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF
1995: Except for historical information contained herein, the matters discussed
are forward-looking statements within the meaning of Section 21E of the
Securities Exchange Act. You should not place undue reliance on these
statements. We base these statements on particular assumptions that we have made
in light of our industry experience, the stage of product and market development
as well as our perception of historical trends, current market conditions,
current economic data, expected future developments and other factors that we
believe are appropriate under the circumstances. These statements involve risks
and uncertainties that could cause actual results to differ materially from
those suggested in the forward-looking statements, including but not limited to
changes in the sound reproduction industry, our ability to develop future
products, technology shifts, potential technical or manufacturing difficulties
that could delay products, competition, pricing pressures, the uncertainty of
market acceptance of new products and services by customers, warranty or other
claims, the outcome of pending or future litigation, general economic factors
and other risks identified and discussed in the Company's filings with the
Securities and Exchange Commission. These forward-looking statements are based
on information and management's expectations as of the date hereof. Future
results may differ materially from the Company's current expectations. American
Technology Corporation disclaims any intent or obligation to update those
forward-looking statements, except as otherwise specifically stated.

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FOR FURTHER INFORMATION CONTACT:
Investor Relations:                              Media Inquiries:
Robert Putnam                                    Don Mathias
(858) 679-3168                                   (949) 855-4520
robert@atcsd.com                                 dwmath@aol.com