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        <link:definition>019 - Disclosure - Note 5 - Property and Equipment (Tables)</link:definition>   
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        <link:definition>020 - Disclosure - Note 6 - Accrued Liabilities and Other Liabilities - Noncurrent (Tables)</link:definition>     
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        <link:definition>021 - Disclosure - Note 9 - Share-based Compensation (Tables)</link:definition>     
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        <link:definition>022 - Disclosure - Note 10 - Stockholders' Equity (Tables)</link:definition>  
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        <link:definition>023 - Disclosure - Note 11 - Income (Loss) Per Share (Tables)</link:definition>     
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        <link:definition>024 - Disclosure - Note 2 - Basis of Presentation and Significant Acounting Policies (Details)</link:definition>   
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        <link:definition>025 - Disclosure - Note 4 - Inventories (Details) - Inventories</link:definition>  
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        <link:definition>026 - Disclosure - Note 5 - Property and Equipment (Details) - Property and Equipment</link:definition>    
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        <link:definition>027 - Disclosure - Note 5 - Property and Equipment (Details) - Property and Equipment, Depreciation Expense</link:definition> 
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        <link:definition>028 - Disclosure - Note 6 - Accrued Liabilities and Other Liabilities - Noncurrent (Details)</link:definition> 
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        <link:definition>033 - Disclosure - Note 8 - Commitments and Contingencies (Details)</link:definition> 
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        <link:definition>034 - Disclosure - Note 9 - Share-based Compensation (Details)</link:definition> 
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        <link:definition>035 - Disclosure - Note 9 - Share-based Compensation (Details) - Share-based Compensation</link:definition>   
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        <link:definition>036 - Disclosure - Note 9 - Share-based Compensation (Details) - Summary of Share-based Compensation Expense</link:definition>  
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        <link:definition>037 - Disclosure - Note 9 - Share-based Compensation (Details) - Weighted-average Assumptions</link:definition>  
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        <link:definition>038 - Disclosure - Note 10 - Stockholders' Equity (Details)</link:definition>   
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        <link:definition>039 - Disclosure - Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders' Equity</link:definition>   
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        <link:definition>040 - Disclosure - Note 11 - Income (Loss) Per Share (Details) - Basic and Diluted Earnings Per Share</link:definition>     
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        <link:definition>041 - Disclosure - Note 12 - Major Customers (Details)</link:definition>   
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        <link:definition>000 - Disclosure - Document And Entity Information</link:definition>    
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  <xs:element name="SupplementalDisclosureOfCashFlowInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_SupplementalDisclosureOfCashFlowInformationAbstract"/> 
  <xs:element name="CurrentAndNoncurrentAccruedLiabilitiesTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_CurrentAndNoncurrentAccruedLiabilitiesTextBlockAbstract"/>    
  <xs:element name="CurrentAndNoncurrentAccruedLiabilitiesTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_CurrentAndNoncurrentAccruedLiabilitiesTextBlock"/>   
  <xs:element name="Note5PropertyandEquipmentTablesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note5PropertyandEquipmentTablesTable"/> 
  <xs:element name="Note5PropertyandEquipmentTablesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note5PropertyandEquipmentTablesLineItems"/>    
  <xs:element name="Note6AccruedLiabilitiesandOtherLiabilitiesNoncurrentTablesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note6AccruedLiabilitiesandOtherLiabilitiesNoncurrentTablesTable"/>     
  <xs:element name="Note6AccruedLiabilitiesandOtherLiabilitiesNoncurrentTablesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note6AccruedLiabilitiesandOtherLiabilitiesNoncurrentTablesLineItems"/>   
  <xs:element name="InventoriesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_InventoriesAbstract"/>  
  <xs:element name="PropertyAndEquipmentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_PropertyAndEquipmentAbstract"/>     
  <xs:element name="PropertyAndEquipmentDepreciationExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_PropertyAndEquipmentDepreciationExpenseAbstract"/>   
  <xs:element name="SummaryOfAccruedLiabilitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_SummaryOfAccruedLiabilitiesAbstract"/>    
  <xs:element name="OtherLiabilitiesNoncurrentConsistedOfTheFollowingAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_OtherLiabilitiesNoncurrentConsistedOfTheFollowingAbstract"/>   
  <xs:element name="ChangesInWarrantyReserveAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ChangesInWarrantyReserveAbstract"/>   
  <xs:element name="ShortTermAndLongTermWarrantyReservesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ShortTermAndLongTermWarrantyReservesAbstract"/>  
  <xs:element name="SummaryOfShareBasedCompensationExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_SummaryOfShareBasedCompensationExpenseAbstract"/> 
  <xs:element name="WeightedAverageAssumptionsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_WeightedAverageAssumptionsAbstract"/>  
  <xs:element name="RangeDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_RangeDomain"/>   
  <xs:element name="Note9SharebasedCompensationDetailsWeightedaverageAssumptionsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note9SharebasedCompensationDetailsWeightedaverageAssumptionsTable"/>    
  <xs:element name="Note9SharebasedCompensationDetailsWeightedaverageAssumptionsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note9SharebasedCompensationDetailsWeightedaverageAssumptionsLineItems"/>  
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate"/> 
  <xs:element name="SummaryOfChangesInStockholdersEquityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_SummaryOfChangesInStockholdersEquityAbstract"/>  
  <xs:element name="Note10StockholdersEquityDetailsSummaryofChangesinStockholdersEquityTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note10StockholdersEquityDetailsSummaryofChangesinStockholdersEquityTable"/>   
  <xs:element name="Note10StockholdersEquityDetailsSummaryofChangesinStockholdersEquityLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note10StockholdersEquityDetailsSummaryofChangesinStockholdersEquityLineItems"/> 
  <xs:element name="BasicAndDilutedEarningsPerShareAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_BasicAndDilutedEarningsPerShareAbstract"/>  
  <xs:element name="Note11IncomeLossPerShareDetailsBasicandDilutedEarningsPerShareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note11IncomeLossPerShareDetailsBasicandDilutedEarningsPerShareTable"/>   
  <xs:element name="Note11IncomeLossPerShareDetailsBasicandDilutedEarningsPerShareLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note11IncomeLossPerShareDetailsBasicandDilutedEarningsPerShareLineItems"/> 
  <xs:element name="NumeratorAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_NumeratorAbstract"/>   
  <xs:element name="DenominatorAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_DenominatorAbstract"/>  
  <xs:element name="PotentiallyDilutiveSecuritiesOutstandingAtPeriodEndExcludedFromTheDilutedComputationAsTheInclusionWouldHaveBeenAntidilutiveAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_PotentiallyDilutiveSecuritiesOutstandingAtPeriodEndExcludedFromTheDilutedComputationAsTheInclusionWouldHaveBeenAntidilutiveAbstract"/> 
  <xs:element name="NetOperatingLossCarryForwards" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_NetOperatingLossCarryForwards"/>     
  <xs:element name="NetOperatingLossCarryForwardsMaximumNumberOfYears" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_NetOperatingLossCarryForwardsMaximumNumberOfYears"/>     
  <xs:element name="Note8CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note8CommitmentsandContingenciesDetailsTable"/>  
  <xs:element name="Note8CommitmentsandContingenciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note8CommitmentsandContingenciesDetailsLineItems"/>     
  <xs:element name="SecurityAccountSIPCInsuredAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="lrad_SecurityAccountSIPCInsuredAmount"/>  
  <xs:element name="CashPortionSIPCInsuredAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="lrad_CashPortionSIPCInsuredAmount"/>    
  <xs:element name="TargetBonusAmountsOfPercentageOfEmployeeBaseSalaryMinimum" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="lrad_TargetBonusAmountsOfPercentageOfEmployeeBaseSalaryMinimum"/>  
  <xs:element name="TargetBonusAmountsOfPercentageOfEmployeeBaseSalaryMaximum" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="lrad_TargetBonusAmountsOfPercentageOfEmployeeBaseSalaryMaximum"/>  
  <xs:element name="PaymentOfBonusAsPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_PaymentOfBonusAsPercentage"/> 
  <xs:element name="Note9SharebasedCompensationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note9SharebasedCompensationDetailsTable"/>  
  <xs:element name="Note9SharebasedCompensationDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note9SharebasedCompensationDetailsLineItems"/>     
  <xs:element name="Note10StockholdersEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note10StockholdersEquityDetailsTable"/> 
  <xs:element name="Note10StockholdersEquityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note10StockholdersEquityDetailsLineItems"/>    
  <xs:element name="ClassOfWarrantOrRightsEndDateOfWarrantsOrRightsExercisable" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ClassOfWarrantOrRightsEndDateOfWarrantsOrRightsExercisable"/>    
  <xs:element name="MajorCustomerDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_MajorCustomerDomain"/>    
  <xs:element name="Note12MajorCustomersDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="lrad_Note12MajorCustomersDetailsTable"/>   
  <xs:element name="Note12MajorCustomersDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Note12MajorCustomersDetailsLineItems"/> 
  <xs:element name="NumberOfCustomersAttainingSpecifiedPercentageOfRevenue" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_NumberOfCustomersAttainingSpecifiedPercentageOfRevenue"/>    
  <xs:element name="MinimumPercentageOfRevenueRequireToBeDisclosedAsMajorCustomer" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_MinimumPercentageOfRevenueRequireToBeDisclosedAsMajorCustomer"/> 
  <xs:element name="NumberOfCustomersAttainingSpecifiedPercentageOfAccountsReceivable" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_NumberOfCustomersAttainingSpecifiedPercentageOfAccountsReceivable"/> 
  <xs:element name="MinimumPercentageOfAccountsReceivableRequireToBeDisclosedAsMajorCustomer" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_MinimumPercentageOfAccountsReceivableRequireToBeDisclosedAsMajorCustomer"/>   
  <xs:element name="MajorCustomerAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="lrad_MajorCustomerAxis"/>   
  <xs:element name="ChangeOfControlSeveranceBenefitPlanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ChangeOfControlSeveranceBenefitPlanMember"/>   
  <xs:element name="CostOfRevenueMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_CostOfRevenueMember"/>    
  <xs:element name="Customer1Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer1Member"/> 
  <xs:element name="Customer2Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer2Member"/> 
  <xs:element name="Customer3Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer3Member"/> 
  <xs:element name="Customer4Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer4Member"/> 
  <xs:element name="Customer5Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer5Member"/> 
  <xs:element name="Customer6Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Customer6Member"/> 
  <xs:element name="DepreciationExpenseMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_DepreciationExpenseMember"/> 
  <xs:element name="HeldAtSupplierLocationMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_HeldAtSupplierLocationMember"/>  
  <xs:element name="Level1Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Level1Member"/>     
  <xs:element name="Level2Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Level2Member"/>     
  <xs:element name="Level3Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_Level3Member"/>     
  <xs:element name="OptionsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_OptionsMember"/>  
  <xs:element name="ShareBuybackProgramMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_ShareBuybackProgramMember"/> 
  <xs:element name="TargetBonusAmountsMaximumMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_TargetBonusAmountsMaximumMember"/>   
  <xs:element name="TargetBonusAmountsMinimumMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_TargetBonusAmountsMinimumMember"/>   
  <xs:element name="TwoThousandFiveEquityIncentivePlanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_TwoThousandFiveEquityIncentivePlanMember"/> 
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="lrad_DocumentAndEntityInformationAbstract"/> 
</xs:schema>   


