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                                                                 EXHIBIT 10.24

March 11, 1996



Mr. George Meredith
Executive Vice President
Life Sciences & Corporate Services
3M
220-13W-39
Maplewood, MN  55144-1000                               Via Telefax 612-736-8715

Re:      LETTER OF INTENT for Purchase of Certain Assets of 3M Hearing Health
         Business

Dear Mr. Meredith:

The purpose of this letter is to outline the manner in which we (the "Buyer")
propose to acquire from Minnesota Mining and Manufacturing Company (the
"Corporation") all the assets, tangible and intangible, owned or used directly
and primarily by the Corporation in connection with its Hearing Health business
(the "Business") including but not limited to those set forth on Exhibit A
attached hereto (the "Assets") and to assume certain specified liabilities of
the Corporation. The parties recognize that the transaction will require further
documentation and approvals, including the preparation and approval of a formal
agreement setting forth the terms and conditions of the proposed purchase
("Asset Purchase Agreement"); nevertheless, they execute this letter to evidence
their intention to proceed in mutual good faith to complete work required to
negotiate terms of an Asset Purchase Agreement that are consistent with this
letter.
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The proposed terms and conditions include, but are not limited to, the
following:

PURCHASE OF
ASSETS:               The Buyer will purchase the Assets from the Corporation.

ASSUMPTION
OF LIABILITIES:       The Buyer will assume certain liabilities of the
                      Corporation to be agreed upon by the parties. The Buyer
                      will not assume nor be liable for any other liabilities or
                      obligations of the Corporation (including but not limited
                      to accounts payable and any other amounts owed to third
                      parties) except as agreed to by the parties.

INDEMNIFICATION:      The Corporation shall indemnify and hold harmless the
                      Buyer against each and every liability and obligation of
                      the Corporation other than those specifically assumed by
                      the Buyer and all liabilities, obligations, and costs
                      relating to the conduct of the Business prior to the
                      Closing. The Buyer shall indemnify and hold harmless the
                      Corporation against each and every liability and
                      obligation of the Business relating to the conduct of the
                      Business after the closing.

PURCHASE PRICE:       The Buyer will pay Corporation $25 million ("Purchase 
                      Price"), payable as follows: $1 million in cash upon the
                      signing of this letter by both parties and $24 million in
                      cash at the Closing.

CLOSING:              The parties shall execute the Asset Purchase Agreement and
                      close the transactions contemplated herein (the "Closing")
                      on or before May 31, 1996.


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ASSET PURCHASE
AGREEMENT:            The transaction will be subject to the negotiation and
                      execution of a definitive Asset Purchase Agreement with
                      terms satisfactory to Corporation and Buyer. The Asset
                      Purchase Agreement will contain representations,
                      warranties, covenants, conditions, and indemnification
                      provisions customary in transactions of this size and type
                      and will provide for allocation of the Purchase Price
                      among the Covenant Not To Compete and the Assets based on
                      their agreed value and, in addition, shall provide for the
                      following:

                      a. Buyer will be licensed to use the trademark "3M" until
                      the earlier of a) the date Buyer no longer has inventory
                      bearing the "3M" logo and b) one year following the
                      Closing (the "License Termination Date"). Buyer shall use
                      reasonable commercial efforts to transition to the
                      manufacture of Products without the trademark "3M" and to
                      sell inventory bearing such trademark before selling
                      Product without such trademark. Notwithstanding the
                      foregoing Buyer shall be free to sell Products bearing the
                      trademark "3M" following the License Termination Date if
                      such product was in inventory as of the Closing or
                      returned to inventory as a result of a return for
                      reimbursement or credit in accordance with customary
                      practice. Buyer is hereby licensed for a period of five
                      years following the Closing to reference 3M, subject to
                      3M's prior written approval of said reference, which
                      approval shall not unreasonable be withheld, as one of the
                      sources of the technology used in any ReSound product so
                      long as such product embodies the technology included in
                      one of the patents included among the Assets.


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                      b. Standard Sellers representations regarding selected
                      financial data, liabilities, inventory, employees, and
                      stating that Corporation's disclosures are materially
                      complete, accurate, and not misleading.

                      c. Buyer will be allowed for two years following the
                      Closing on a rent-free basis to retain the use of the
                      facilities currently used by the Business, such additional
                      space as is required for the transfer of certain employees
                      of the Business from their current office at the
                      Corporation to the facility currently occupied by the
                      Business and to accommodate additional personnel as are
                      required to grow the business at a mutually agreed upon
                      growth rate and square footage allowance. Notwithstanding
                      the foregoing, Buyer will be responsible for non-rent
                      costs related to Buyer's use of facilities including but
                      not limited to facility operating expenses, real estate
                      taxes, telephone and improvement/remodeling expenses.

                      d. Buyer may offer employment and Buyer's benefit package
                      to employees of its choice of the Business; Buyer will not
                      be responsible for relocating or severing those employees
                      who decline Buyer's offer or to whom no offer was given or
                      who return from disability leave; Corporation, at the
                      Closing, will pay all employees in cash for vacation
                      accrued as of the Closing. Buyer agrees to recognize all
                      years of employment with Corporation as years of service
                      with Buyer for the purpose of computing years of service
                      for benefits plan purposes for all of Corporation's
                      employees who become employees of Buyer at and as a result
                      of the Closing.

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                      e. Corporation shall provide the Business, at no charge,
                      information systems access, information services,
                      accounting, billing, and cost reports services for thirty
                      days following Closing. Corporation shall charge Buyer its
                      cost therefor for 60 days thereafter and for sixty
                      additional days at cost plus 20%. Upon the signing of this
                      letter by both parties information service personnel from
                      both Corporation and Buyer shall promptly meet to develop
                      a program for the provision of such services.

                      f. Buyer shall assume all Warranty expenses relating to
                      Products sold prior to the Closing, including the cost of
                      returns, remakes and repairs. The term "Warranty expenses"
                      shall not include the cost of damages, liabilities or
                      expense relating to personal injury or property damage
                      cause by or related to such Products.

                      g. Corporation shall make available to Buyer Corporation's
                      employees, namely Gabi Sabongi and Terry Rogers, formerly
                      associated with the Business for consulting purposes
                      during the three months following the Closing for up to
                      104 hours per each such employee. Other corporation
                      employees formerly associated with the Business shall be
                      made available on a limited basis at the discretion of
                      Corporation.

                      h. On the ninetieth (90th) day following Closing,
                      Corporation shall reimburse Buyer for all accounts
                      receivable not collected by Buyer by such date, provided
                      however that the Buyer shall assign such uncollected
                      accounts to Corporation.


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                      i. Corporation shall be liable for excessive and obsolete
                      inventory determined following an evaluation conducted by
                      Buyer's independent auditors prior to Closing.

                      j. In the event Buyer cannot or elects not to assume
                      certain agreements related to the Business, then Buyer and
                      Corporation will work together in a mutually acceptable
                      arrangement in order for Corporation to fulfill its
                      obligations under said agreements. Buyer shall receive a
                      non-exclusive license to the CID Patents included among
                      the Assets. Corporation shall not grant another
                      non-exclusive license for such patents without Buyer's
                      permission. Corporation will use its best efforts to
                      assist Buyer to negotiate a direct contractual
                      relationship with the owner of the CID Patents and will,
                      if requested by Buyer, assign to Buyer all rights under
                      its license agreement concerning the CID Patents or
                      relinquish all its rights under such agreement.

                      k. Corporation shall grant Buyer a royalty free license
                      for any patent used in the Business but not part of the
                      Assets.

ACCESS:               To permit Buyer to conduct its due diligence
                      investigation, from March 20, 1996 and as long as this
                      Letter of Intent remains in effect, the Corporation will
                      permit the Buyer and its agents to have reasonable access
                      to the premises in which the Corporation conducts the
                      Business and to its books and records and will furnish to
                      Buyer such financial data, operating data, and other
                      information as Buyer shall reasonably request. The Buyer
                      agrees to retain all information so obtained from
                      Corporation on a confidential basis. Upon the termination
                      of this Letter of Intent for 


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                      any reason, the Buyer shall return promptly to the
                      Corporation all printed information received by the Buyer
                      from the Corporation in connection with the proposed
                      transaction.


ORDINARY COURSE
OF BUSINESS:          The parties agree that the Business will be operated from
                      the date hereof through the Closing in the ordinary course
                      of its business, consistent with past practices. Without
                      limiting the foregoing, there shall be no change in
                      accounting policies applied on a consistent basis and no
                      accruals for payment of investment bankers or counsel fees
                      with respect to the transaction for the Buyer or the
                      Corporation. There shall not be any change in or
                      restrictions placed on the payment of liabilities pending
                      the Closing. There shall not be any change in the method
                      by which bonuses or other payments are made to employees
                      of the Business.


EXCLUSIVITY:          The parties agree to negotiate in good faith the
                      provisions of an Asset Purchase Agreement not later than
                      June 15, 1996 ("Exclusivity Period"). The parties agree
                      that during the Exclusivity Period the Buyer shall have
                      the exclusive right to negotiate with the Corporation for
                      the purchase of the Assets and during such Exclusivity
                      Period the Corporation agrees not to directly or through
                      intermediaries solicit, entertain or otherwise discuss
                      with any person any offers to purchase all or any portion
                      of the Assets or of the Business out of its ordinary
                      course of business.


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EARNEST
PAYMENT:              Buyer and Corporation recognize that Corporation has
                      provided to Buyer valuable competitive and proprietary
                      information regarding the Business including but not
                      limited to information regarding the Business' customers,
                      products, manufacturing operations and personnel. Buyer
                      and Corporation each further recognize that in the event
                      the aforementioned transaction is not consummated, then
                      Corporation's Business will be irreparably damaged and
                      harmed. Accordingly, Buyer agrees that the first One
                      Million Dollars ($1,000,000) of the Purchase Price
                      referred to above shall constitute an earnest payment (the
                      "Earnest Payment") to be deposited immediately upon
                      payment in an interest bearing account at a reputable
                      institution acceptable to both Buyer and Corporation with
                      all interest accrued on such amount prior to the Closing
                      or the date the parties reasonably conclude that the
                      transaction contemplated hereby will not occur ("the
                      Termination Date"), whichever occurs first, to be paid to
                      Buyer. In the event the transaction is not consummated due
                      to (i) the failure to obtain the receipt of all required
                      approvals, consents and authorizations of state and
                      federal regulatory authorities, including but not limited
                      to expiration without regulatory challenge of the required
                      waiting period under the Hart-Scott-Rodino Improvements
                      Act of 1986; (ii) a material change in sales revenue or
                      costs defined as a 20% deviation of the Business; or (iii)
                      failure to obtain Corporation's management committees'
                      approval and Corporation's Board of Directors' approval,
                      then the Earnest Payment shall be returned to Buyer,
                      otherwise, Corporation retains the right to the Earnest
                      Payment and all 


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                      interest earned thereon from and after the Termination
                      Date. In the event the transaction is consummated, then
                      the Earnest Payment shall constitute the first $1 million
                      of the Purchase Price.


COVENANT NOT
TO COMPETE:           In the Asset Purchase Agreement, Corporation will agree
                      that it will not, directly or indirectly, through a
                      subsidiary or otherwise, compete with the Buyer in its
                      business for a period of five (5) years after the Closing.

NEWS RELEASE:         Unless required in the opinion of Counsel, neither
                      Corporation nor Buyer will issue a news release or other
                      announcement concerning the transaction without the prior
                      approval of the other as to the contents of the
                      announcement and its release, which approval will not be
                      unreasonably withheld.

REIMBURSEMENT
OF EXPENSES:          Each party shall bear its own cost involved in the
                      negotiation, documentation and conclusion of the
                      transaction contemplated herein. Buyer will pay the filing
                      fee associated with the Hart-Scott- Rodino Improvements
                      Act of 1986.

This offer is contingent upon: (i) the completion by the Buyer, to its
satisfaction, of due diligence on the Business, its markets, prospects and
potential; (ii) satisfactory completion of legal due diligence, including,
without limitation, review of material 


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contracts and due diligence with respect to evaluation of potential liabilities
related to environmental and other issues and tax matters; (iii) receipt of all
required approvals, consents and authorizations of state and federal regulatory
authorities, including but not limited to expiration without regulatory
challenge of the required waiting period under the Hart-Scott-Rodino
Improvements Act of 1986; (iv) receipt of all required consents of third
parties; (v) the occurrence of no material adverse change in sales revenue or
cost, as defined as 20% deviation from forecasts made available to Buyer prior
to the date of this letter; and (vi) the completion of satisfactory legal
documentation including adequate indemnifications and representations; (vi)
Buyer obtaining adequate financing for the Purchase Price on or prior to the
Closing; (vii) approved by appropriate management committees and Boards of
Directors of Buyer and Corporation.

The parties agree that any discussions or information in any form related to the
possible terms of the transaction (including but not limited to valuations of
any of the Assets by either party as part of the negotiations) have been
disclosed in part in contemplation of settlement of the pending patent
litigation involving the parties and shall be inadmissible as evidence in any
patent litigation between the partners should the transaction contemplated
hereby not take place.

This Letter of Intent may be executed in several counterparts and all so
executed shall constitute one letter binding on all the parties hereto even
though all the parties are not signatories to the original or the same
counterpart.

Our signature on this Letter of Intent shall not be valid unless you have
executed and we have received from you a copy of this Letter of Intent with your
original signature on it. If the foregoing is acceptable to you, kindly execute
a copy of this letter to us at your earliest convenience.


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Very truly yours,

RESOUND CORPORATION


By:      /s/ Paul Busse
         --------------------------------- 
         Paul Busse
         Sr. Vice President, Finance & Administration
         & Chief Financial Officer



ACCEPTED AND AGREED TO:

MINNESOTA MINING AND
MANUFACTURING COMPANY


By:      /s/ George Meredith
         --------------------------------- 
         George Meredith
         Executive Vice President
         Life Sciences & Corporate Services


cc:  Peter Riepenhausen


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                                    EXHIBIT A
                                     ASSETS

a.   Fixed Assets, machinery, manufacturing equipment, laboratory and test
     equipment, and office equipment, raw materials, packaging, factory
     supplies, work-in-progress, and finished goods inventories, accounts
     receivable, customer lists and business records as may exist at the Closing
     (and not materially different in value and quality from those in existence
     as of the date of this letter) directly and primarily related to the
     Business.

b.   Trademarks and trade names specific to the Business, and all associated
     goodwill and rights to inventions disclosed by employees of the Business,
     patent applications as well as all divisions, reissues,
     continuations-in-part, renewals, extensions and counterparts thereof in any
     country of all patents relevant to the Business.

c.   Corporation's entire right, title, and interest under any claims specific
     to the Business against any party which claim arose at any time prior to,
     and up to the Closing, including but not limited to all of Corporation's
     rights under any claim in any choses in action against Buyer and others
     related to intellectual property included in the Assets specific to the
     Business, which arose at any time prior to and up to the Closing.

d.   The Assets shall not include the agreements related to HearX and the HearX
     stock (and rights related to the HearX stock).


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