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  <xsd:element abstract="true" id="hear_StockPurchaseWarrantsMember" name="StockPurchaseWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hear_SummaryofActivityinSharesAvailableforGrantTableTextBlock" name="SummaryofActivityinSharesAvailableforGrantTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hear_ThirtyConsecutiveDayPeriodDuringFirstQuarterofEachFiscalYearMember" name="ThirtyConsecutiveDayPeriodDuringFirstQuarterofEachFiscalYearMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hear_UKBorrowerMember" name="UKBorrowerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hear_UnderwrittenPublicOfferingMember" name="UnderwrittenPublicOfferingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hear_VTBHSeriesAPreferredStockConvertedIntoParametricCommonStockMember" name="VTBHSeriesAPreferredStockConvertedIntoParametricCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hear_VTBHoldingsIncMember" name="VTBHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hear_ValuationAllowancesandReservesRecoveriesandDeductionsNet" name="ValuationAllowancesandReservesRecoveriesandDeductionsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>


