A language group is a group of languages and voices that your agents have access to. You can use the Language Groups feature to create a set of languages with their associated voices and DTMF options. Then, you can link the language group to one or more agents, and update the agents’ messages to include a menu based on the language group so that the user can change languages if desired at the beginning of the conversation.

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Creating a language group

To create a new language group, click “Languages” on the left navbar. Language group name: The name of the language group (must be unique within organization) Description (optional): Description of the language group. Languages: Here you can select which languages are associated with the language group. For each language, you must enter a DTMF code (a number between 1 and 9, inclusive), select a voice provider, and select a voice from that provider. Note that your voice options are limited to voices that support the selected language. Each language in the group must be unique and have a unique DTMF code. The option “Skip first language when reading out language options” allows you to omit the first language in the group from the DTMF menu presented as part of the greeting message (see below). To give an agent the ability to understand a user’s request to speak in different languages, the process is as follows:
  1. Create a language group as outlined above.
  2. Navigate to the desired agent. Your language group should now appear as an option in the “Languages” dropdown on the agent edit screen. Select the language group there and save your changes.
  3. Navigate to the agent’s message. Insert the tag {{ language.mode }} into the message (and/or the text of any message rules) where you would like the language menu to be delivered by the agent. Save your changes.
Now, when a user converses with your agent, at the beginning of the conversation it will deliver its associated message as normal, but at the point at which you inserted the {{ language.mode }}tag, it will instead read off a menu automatically generated from the language group linked to the agent. For example, for the language group with 
English - DTMF 1
Spanish - DTMF 2
Chinese - DTMF 3
the menu would be as follows: 
For English, press 1.
Para Español, oprima el 2.
中文请按 3.
If the user had selected “Skip first language when reading out language options” when configuring the language group, it would instead be 
Para Español, oprima el 2.
中文请按 3.

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Available voices and languages

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Google Cloud Text‑to‑Speech

VoiceGenderModelLanguages
AoedeFemaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
CharonMaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
FenrirMaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
KoreFemaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
LedaFemaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
OrusMaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
PuckMaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
ZephyrFemaleChirp 3 HDen‑US, ko‑KR, zh‑CN, es‑US, th‑TH, vi‑VN
en‑US‑Neural2‑DMaleNeural2en‑US
en‑US‑Neural2‑FFemaleNeural2en‑US
es‑US‑Neural2‑AFemaleNeural2es‑US
es‑US‑Neural2‑BMaleNeural2es‑US
ko‑KR‑Neural2‑AFemaleNeural2ko‑KR
vi‑VN‑Neural2‑AFemaleNeural2vi‑VN
cmn‑TW‑Wavenet‑AFemaleWaveNetcmn‑TW
yue‑HK‑Standard‑CFemaleStandardyue‑HK
en‑US‑Studio‑OFemaleStudioen‑US

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OpenAI Text‑to‑Speech

VoiceGenderModelLanguages
AlloyMaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
AshMaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
CoralFemaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
EchoFemaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
FableFemaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
NovaFemaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
OnyxMaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
SageMaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN
ShimmerFemaleTTS‑1en‑US, ko‑KR, zh‑CN, fa‑IR, es‑US, th‑TH, vi‑VN

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ElevenLabs

VoiceGenderModelLanguages
AliceFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
BillMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
BrianMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
CallumMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
CharlieMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
CharlotteFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
ChrisMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
DanielMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
EricMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
GeorgeMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
JessicaFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
LauraFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
LiamMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
LilyFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
MatildaFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
RiverMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
RogerMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
SarahFemaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US
WillMaleeleven_flash_v2_5en‑US, ko‑KR, zh‑CN, es‑US

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How to Listen to AI Voices in Console

  • Log into the Syllable Console.
  • Click the Languages tab, then select New Language Group
  • Name your new Language Group.
  • Select the default language.
  • Pick a voice provider.
  • Click the speaker icon to listen to a sample of the voice you want to hear.
  • Tweak the Voice Speed and Pitch to your liking. We recommend small increments to maintain a human timbre.