TTS (Premium)

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Available in Classic and VPC

Synthesize speech by taking in text to convert and parameters like tone, speed, and emotion.

Request

This section describes the request format. The method and URI are as follows:

Method	URI
POST	/tts

Request headers

For information about the headers common to all CLOVA Voice APIs, see Common CLOVA Voice headers.

Request body

You can include the following data in the body of your request:

Field	Type	Required	Description
`speaker`	String	Required	Voice type to use for speech synthesis For information about each voice, see List of speech synthesis voices
`text`	String	Required	Text to be converted to speech Only support UTF-8-encoded text Synthesize speech up to 2000 characters Text in symbols or parentheses is not converted
`volume`	Integer	Optional	Speech volume `-5` - `5` (default: `0`) `-5`: Synthesize 0.5x smaller `0`: Synthesize to normal volume `5`: Synthesize 1.5x larger
`speed`	Integer	Optional	Speech speed `-5` - `5` (default: `0`) `-5`: Synthesize 2x faster `0`: Synthesize to normal speed `5`: Synthesize 0.5x slower
`pitch`	Integer	Optional	Speech pitch `-5` - `5` (default: `0`) `-5`: Synthesize 1.2x higher `0`: Synthesize to normal pitch `5`: Synthesize 0.8x lower
`emotion`	Integer	Optional	Emotion level of speech Supported voices: `nara` \| `vara` \| `vmikyung` \| `vdain` \| `vyuna` \| `vgoeun` \| `vdaeseong` For information about each voice, see List of speech synthesis voices `0` - `3` (default: `0`) `0`: neutral `1`: sad `2`: happy `3`: angry (`nara` not supported)
`emotion-strength`	Integer	Optional	Emotion intensity of speech Supported voices: `vara` \| `vmikyung` \| `vdain` \| `vyuna` \| `vgoeun` \| `vdaeseong` For information about each voice, see List of speech synthesis voices `0` - `2` (default: `1`) `0`: weak `1`: normal `2`: strong
`format`	String	Optional	Speech file format `mp3` (default) \| `wav`
`sampling-rate`	Integer	Optional	Sampling rate of speech Only supported for `wav` format `8000` \| `16000` \| `24000` (default)\| `48000` Exceptionally, `mijin` supports the `16000` rate for `mp3` format
`alpha`	Integer	Optional	Tone `-5` - `5` (default: `0`) If higher than `0`: high tone If lower than `0`: low tone
`end-pitch`	Integer	Optional	End-pitch processing of speech Supported voices: `clara` \| `matt` \| `meimei` \| `liangliang` \| `chiahua` \| `kuanlin` \| `carmen` \| `jose` \| all voices starting with `d-` (<e.g.> `dara`) For information about each voice, see List of speech synthesis voices `-5` - `5` (default: `0`) If higher than `0`: high end-pitch If lower than `0`: low end-pitch

List of speech synthesis voices

The following describes in detail the types of voices that will be used for speech synthesis.

Field	Name	Language	Description
`carmen`	Carmen	Spanish	Female
`chiahua`	Chiahua	Taiwanese	Female
`clara`	Clara	English	Female
`danna`	Anna	English	Female
`dara_ang`	Ara (angry)	Korean	Female
`dara-danna`	Ara & Anna	Korean + English (U.S.)	Female
`dayumu`	Ayumu	Japanese	Male
`ddaiki`	Daiki	Japanese	Male
`deriko`	Eriko	Japanese	Female
`dhajime`	Hajime	Japanese	Male
`djoey`	Joey	English	Female
`dmio`	Mio	Japanese	Female
`dnaomi_formal`	Naomi (news)	Japanese	Female
`dnaomi_joyful`	Naomi (happy)	Japanese	Female
`dnaomi`	Naomi	Japanese	Female
`driko`	Riko	Japanese	Female
`dsayuri`	Sayuri	Japanese	Female
`dsinu-matt`	Sinu & Matt	Korean + English (U.S.)	Male
`dtomoko`	Tomoko	Japanese	Female
`jinho`	Jinho	Korean	Male
`jose`	Jose	Spanish	Male
`kuanlin`	Kuanlin	Taiwanese	Male
`liangliang`	Liangliang	Chinese	Male
`matt`	Matt	English	Male
`meimei`	Meimei	Chinese	Female
`mijin`	Mijin	Korean	Female
`napple`	Neulbom	Korean	Female
`nara_call`	Ara (agent)	Korean	Female
`nara`	Ara	Korean	Female
`nbora`	Bora	Korean	Female
`ndaeseong`	Daeseong	Korean	Male
`ndain`	Dain	Korean	Child (female)
`ndonghyun`	Donghyun	Korean	Male
`nes_c_hyeri`	Hyeri	Korean	Female
`nes_c_kihyo`	Kihyo	Korean	Male
`nes_c_mikyung`	Mikyung	Korean	Female
`nes_c_sohyun`	Sohyun	Korean	Female
`neunseo`	Eunseo	Korean	Female
`neunwoo`	Eunwoo	Korean	Male
`neunyoung`	Eunyoung	Korean	Female
`ngaram`	Garam	Korean	Child (female)
`ngoeun`	Goeun	Korean	Female
`ngyeongjun`	Gyeongjun	Korean	Male
`nhajun`	Hajun	Korean	Child (male)
`nheera`	Heera	Korean	Female
`nian`	Ian	Korean	Male
`nihyun`	Ihyun	Korean	Female
`njaewook`	Jaewook	Korean	Male
`njangj`	Dream	Korean	Female
`njihun`	Jihun	Korean	Male
`njihwan`	Jihwan	Korean	Male
`njinho`	Jinho	Korean	Male
`njiwon`	Jiwon	Korean	Female
`njiyun`	Jiyun	Korean	Female
`njonghyeok`	Jonghyeok	Korean	Male
`njonghyun`	Jonghyun	Korean	Male
`njooahn`	Jooahn	Korean	Male
`njoonyoung`	Joonyoung	Korean	Male
`nkitae`	Kitae	Korean	Male
`nkyunglee`	Kyunglee	Korean	Female
`nkyungtae`	Kyungtae	Korean	Male
`nkyuwon`	Kyuwon	Korean	Male
`nmammon`	Demon Mammon	Korean	Male
`nmeow`	Meow	Korean	Child (female)
`nmijin`	Mijin	Korean	Female
`nminjeong`	Minjeong	Korean	Female
`nminsang`	Minsang	Korean	Male
`nminseo`	Minseo	Korean	Female
`nminyoung`	Minyoung	Korean	Female
`nmovie`	Movie Choi	Korean	Male
`nnaomi`	Naomi	Japanese	Female
`nnarae`	Narae	Korean	Female
`noyj`	Bomdal	Korean	Female
`nraewon`	Raewon	Korean	Male
`nreview`	Review Park	Korean	Male
`nsabina`	Witch Sabina	Korean	Female
`nsangdo`	Sangdo	Korean	Male
`nsayuri`	Sayuri	Japanese	Female
`nseonghoon`	Seonghoon	Korean	Male
`nseungpyo`	Seungpyo	Korean	Male
`nshasha`	Shasha	Korean	Female
`nsinu`	Sinu	Korean	Male
`nsiyoon`	Siyoon	Korean	Male
`nsujin`	Sujin	Korean	Female
`nsunhee`	Sunhee	Korean	Female
`nsunkyung`	Sunkyung	Korean	Female
`ntaejin`	Taejin	Korean	Male
`ntiffany`	Kiseo	Korean	Female
`ntomoko`	Tomoko	Japanese	Female
`nwontak`	Wontak	Korean	Male
`nwoof`	Woof	Korean	Child (male)
`nwoosik`	Woosik	Korean	Male
`nyeji`	Yeji	Korean	Female
`nyejin`	Yejin	Korean	Female
`nyounghwa`	Movie Jeong	Korean	Female
`nyoungil`	Youngil	Korean	Male
`nyoungmi`	Youngmi	Korean	Female
`nyujin`	Yujin	Korean	Female
`nyuna`	Yuna	Korean	Female
`shinji`	Shinji	Japanese	Male
`vara`	Ara (Pro)	Korean	Female
`vdaeseong`	Daeseong (Pro)	Korean	Male
`vdain`	Dain (Pro)	Korean	Female
`vdonghyun`	Donghyun (Pro)	Korean	Male
`vgoeun`	Goeun (Pro)	Korean	Female
`vhyeri`	Hyeri (Pro)	Korean	Female
`vian`	Ian (Pro)	Korean	Male
`vmikyung`	Mikyung (Pro)	Korean	Female
`vyuna`	Yuna (Pro)	Korean	Female

Request example

The request example is as follows:

curl --location --request POST 'https://naveropenapi.apigw.ntruss.com/tts-premium/v1/tts' \
--header 'X-NCP-APIGW-API-KEY-ID: {Client ID issued when registering the app}' \
--header 'X-NCP-APIGW-API-KEY: {Client secret issued when registering the app}' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'speaker=nara' \
--data-urlencode 'text=Hello' \
--data-urlencode 'volume=0' \
--data-urlencode 'speed=-1' \
--data-urlencode 'pitch=1' \
--data-urlencode 'emotion=2' \
--data-urlencode 'emotion-strength=1' \
--data-urlencode 'format=wav' \
--data-urlencode 'sampling-rate=8000' \
--data-urlencode 'alpha=0' \
--data-urlencode 'end-pitch=0'

Response

This section describes the response format.

Response body

The response body includes the following data:

Field	Type	Required	Description
Responded TTS audio	Binary	-	Binary voice data in MP3 or WAV format

Response status codes

For information about the HTTP status codes common to all CLOVA Voice APIs, see Common CLOVA Voice response status codes.

Response example

The response example is as follows:

{Binary voice data in MP3 or WAV format}

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CLOVA Voice examples

Table of contents

Request
Response