Have the student try out different voice dialects (e.g., British, Australian, German, French, etc) from the list below.

ar-SA
Maged
Default
com.apple.ttsbundle.Maged-compact
AVSpeechSynthesisVoice

cs-CZ
Zuzana
Default
com.apple.ttsbundle.Zuzana-compact
AVSpeechSynthesisVoice

da-DK
Sara
Default
com.apple.ttsbundle.Sara-compact
AVSpeechSynthesisVoice

de-DE
Anna
Default
com.apple.ttsbundle.Anna-compact
AVSpeechSynthesisVoice

de-DE
Helena
Default
com.apple.ttsbundle.siri_female_de-DE_compact
AVSpeechSynthesisVoice

de-DE
Martin
Default
com.apple.ttsbundle.siri_male_de-DE_compact
AVSpeechSynthesisVoice

el-GR
Melina
Default
com.apple.ttsbundle.Melina-compact
AVSpeechSynthesisVoice

en-AU
Catherine
Default
com.apple.ttsbundle.siri_female_en-AU_compact
AVSpeechSynthesisVoice

en-AU
Gordon
Default
com.apple.ttsbundle.siri_male_en-AU_compact
AVSpeechSynthesisVoice

en-AU
Karen
Default
com.apple.ttsbundle.Karen-compact
AVSpeechSynthesisVoice

en-GB
Arthur
Default
com.apple.ttsbundle.siri_male_en-GB_compact
AVSpeechSynthesisVoice

en-GB
Daniel
Default
com.apple.ttsbundle.Daniel-compact
AVSpeechSynthesisVoice

en-GB
Martha
Default
com.apple.ttsbundle.siri_female_en-GB_compact
AVSpeechSynthesisVoice

en-IE
Moira
Default
com.apple.ttsbundle.Moira-compact
AVSpeechSynthesisVoice

en-IN
Rishi
Default
com.apple.ttsbundle.Rishi-compact
AVSpeechSynthesisVoice

en-US
Aaron
Default
com.apple.ttsbundle.siri_male_en-US_compact
AVSpeechSynthesisVoice

en-US
Fred
Default
com.apple.speech.synthesis.voice.Fred
AVSpeechSynthesisVoice

en-US
Nicky
Default
com.apple.ttsbundle.siri_female_en-US_compact
AVSpeechSynthesisVoice

en-US
Samantha
Default
com.apple.ttsbundle.Samantha-compact
AVSpeechSynthesisVoice

en-ZA
Tessa
Default
com.apple.ttsbundle.Tessa-compact
AVSpeechSynthesisVoice

es-ES
Mónica
Default
com.apple.ttsbundle.Monica-compact
AVSpeechSynthesisVoice

es-MX
Paulina
Default
com.apple.ttsbundle.Paulina-compact
AVSpeechSynthesisVoice

fi-FI
Satu
Default
com.apple.ttsbundle.Satu-compact
AVSpeechSynthesisVoice

fr-CA
Amélie
Default
com.apple.ttsbundle.Amelie-compact
AVSpeechSynthesisVoice

fr-FR
Daniel
Default
com.apple.ttsbundle.siri_male_fr-FR_compact
AVSpeechSynthesisVoice

fr-FR
Marie
Default
com.apple.ttsbundle.siri_female_fr-FR_compact
AVSpeechSynthesisVoice

fr-FR
Thomas
Default
com.apple.ttsbundle.Thomas-compact
AVSpeechSynthesisVoice

he-IL
Carmit
Default
com.apple.ttsbundle.Carmit-compact
AVSpeechSynthesisVoice

hi-IN
Lekha
Default
com.apple.ttsbundle.Lekha-compact
AVSpeechSynthesisVoice

hu-HU
Mariska
Default
com.apple.ttsbundle.Mariska-compact
AVSpeechSynthesisVoice

id-ID
Damayanti
Default
com.apple.ttsbundle.Damayanti-compact
AVSpeechSynthesisVoice

it-IT
Alice
Default
com.apple.ttsbundle.Alice-compact
AVSpeechSynthesisVoice

ja-JP
Hattori
Default
com.apple.ttsbundle.siri_male_ja-JP_compact
AVSpeechSynthesisVoice

ja-JP
Kyoko
Default
com.apple.ttsbundle.Kyoko-compact
AVSpeechSynthesisVoice

ja-JP
O-ren
Default
com.apple.ttsbundle.siri_female_ja-JP_compact
AVSpeechSynthesisVoice

ko-KR
Yuna
Default
com.apple.ttsbundle.Yuna-compact
AVSpeechSynthesisVoice

nl-BE
Ellen
Default
com.apple.ttsbundle.Ellen-compact
AVSpeechSynthesisVoice

nl-NL
Xander
Default
com.apple.ttsbundle.Xander-compact
AVSpeechSynthesisVoice

no-NO
Nora
Default
com.apple.ttsbundle.Nora-compact
AVSpeechSynthesisVoice

pl-PL
Zosia
Default
com.apple.ttsbundle.Zosia-compact
AVSpeechSynthesisVoice

pt-BR
Luciana
Default
com.apple.ttsbundle.Luciana-compact
AVSpeechSynthesisVoice

pt-PT
Joana
Default
com.apple.ttsbundle.Joana-compact
AVSpeechSynthesisVoice

ro-RO
Ioana
Default
com.apple.ttsbundle.Ioana-compact
AVSpeechSynthesisVoice

ru-RU
Milena
Default
com.apple.ttsbundle.Milena-compact
AVSpeechSynthesisVoice

sk-SK
Laura
Default
com.apple.ttsbundle.Laura-compact
AVSpeechSynthesisVoice

sv-SE
Alva
Default
com.apple.ttsbundle.Alva-compact
AVSpeechSynthesisVoice

th-TH
Kanya
Default
com.apple.ttsbundle.Kanya-compact
AVSpeechSynthesisVoice

tr-TR
Yelda
Default
com.apple.ttsbundle.Yelda-compact
AVSpeechSynthesisVoice

zh-CN
Li-mu
Default
com.apple.ttsbundle.siri_male_zh-CN_compact
AVSpeechSynthesisVoice

zh-CN
Tian-Tian
Default
com.apple.ttsbundle.Ting-Ting-compact
AVSpeechSynthesisVoice

zh-CN
Yu-shu
Default
com.apple.ttsbundle.siri_female_zh-CN_compact
AVSpeechSynthesisVoice

zh-HK
Sin-Ji
Default
com.apple.ttsbundle.Sin-Ji-compact
AVSpeechSynthesisVoice

zh-TW
Mei-Jia
Default
com.apple.ttsbundle.Mei-Jia-compact
AVSpeechSynthesisVoice

en-US
Alex
Enhanced
com.apple.speech.voice.Alex
AVAlexSpeechSynthesisVoice