<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Wed Jun 24 11:03:23 UTC 2026 -->
<xs:schema elementFormDefault="qualified" xmlns:wahif="http://www.franklintempleton.com/20260430" targetNamespace="http://www.franklintempleton.com/20260430" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:us-types="http://fasb.org/us-types/2026" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="wahif-20260430_lab.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="wahif-20260430_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="wahif-20260430_def.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef"/>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef-pre/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026_pre.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:element name="CommonSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_CommonSharesMember"/>
  <xs:element name="InvestmentRiskAndMarketRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_InvestmentRiskAndMarketRiskMember"/>
  <xs:element name="BelowInvestmentGradeSecuritiesHighYieldRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_BelowInvestmentGradeSecuritiesHighYieldRiskMember"/>
  <xs:element name="LowRatedAndUnratedSecuritiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_LowRatedAndUnratedSecuritiesMember"/>
  <xs:element name="DefaultRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_DefaultRiskMember"/>
  <xs:element name="ForeignNonUSInvestmentRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_ForeignNonUSInvestmentRiskMember"/>
  <xs:element name="EconomicAndPoliticalRisksMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_EconomicAndPoliticalRisksMember"/>
  <xs:element name="InvestmentControlsRepatriationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_InvestmentControlsRepatriationMember"/>
  <xs:element name="MarketIlliquidityMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_MarketIlliquidityMember"/>
  <xs:element name="CurrencyDevaluationsAndFluctuationsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_CurrencyDevaluationsAndFluctuationsMember"/>
  <xs:element name="FinancialInformationAndStandardsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_FinancialInformationAndStandardsMember"/>
  <xs:element name="SmallerCompanyRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_SmallerCompanyRiskMember"/>
  <xs:element name="CreditRiskAndCounterpartyRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_CreditRiskAndCounterpartyRiskMember"/>
  <xs:element name="ReinvestmentRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_ReinvestmentRiskMember"/>
  <xs:element name="LiquidityRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_LiquidityRiskMember"/>
  <xs:element name="DurationRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_DurationRiskMember"/>
  <xs:element name="ManagementRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_ManagementRiskMember"/>
  <xs:element name="LeverageRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_LeverageRiskMember"/>
  <xs:element name="DerivativesRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_DerivativesRiskMember"/>
  <xs:element name="InvestmentInLoansRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_InvestmentInLoansRiskMember"/>
  <xs:element name="DollarRollsAssetBackedSecuritiesAndMortgageBackedSecuritiesRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_DollarRollsAssetBackedSecuritiesAndMortgageBackedSecuritiesRiskMember"/>
  <xs:element name="InterestRateTransactionsRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_InterestRateTransactionsRiskMember"/>
  <xs:element name="ValuationRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_ValuationRiskMember"/>
  <xs:element name="RisksOfWarrantsAndRightsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_RisksOfWarrantsAndRightsMember"/>
  <xs:element name="TemporaryDefensiveStrategiesRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_TemporaryDefensiveStrategiesRiskMember"/>
  <xs:element name="MarketPriceDiscountFromNetAssetValueMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_MarketPriceDiscountFromNetAssetValueMember"/>
  <xs:element name="InflationDeflationRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_InflationDeflationRiskMember"/>
  <xs:element name="MarketEventsRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_MarketEventsRiskMember"/>
  <xs:element name="LegislativeAndRegulatoryRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_LegislativeAndRegulatoryRiskMember"/>
  <xs:element name="AntiTakeoverProvisionsRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_AntiTakeoverProvisionsRiskMember"/>
  <xs:element name="ValuationRisk_1Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_ValuationRisk_1Member"/>
  <xs:element name="TaxRisksMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_TaxRisksMember"/>
  <xs:element name="OperationalRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_OperationalRiskMember"/>
<!-- [WMV7][eGVb8f8WdR7XkCny0byMmRWoqa8q/mTcYpQVWA3DJVGW09ppCDlcK0GE0TMkP9Y9nClmIa4Vf98yh4z4J+kPvKfp71VsR3FZkSScfVe6y9mGsurIbMgRh2UbHB9UQzXylEuAj6ktmh/0CdU1rlrAbd6hL+LmIlD7NPfU0Iq7qXOTWH/cGjY3g3MwT6wNoW7Jo3IJXFb+h2ccBOZMFwDICBnDYA4Gi4k1Q6kCUvMw9ji7F/3RdIUuJYLKNwUY5d1Wr++E4m6G2jTDLLdM2eEcyhwhn2y7Qzm/ik+cgJazwvAC5D9V+CbkNhwMHNv/aoPig779xKt2k/y1cJT0sQkNv7dfSOIISFJCxkHVIxvtzEQJDDn+DO8ZhQaxUwAUe4M=] CSR-->
  <xs:element name="CybersecurityRiskMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="wahif_CybersecurityRiskMember"/>
</xs:schema>
