Providers specifics for Voice Synthesis

Provider	Cerence	Voxygen	Readspeaker
Language count	67	8	30
Voice count	676	15	168
Creation of custom voice possible¹	Yes (in studio)	Yes (in studio)	Yes (in studio)
Emotion simulation²	Yes (on request)	No	No
Emotion presets³	No	Yes	No
Voice quality choice	`embedded-compact`, `embedded-pro`, `embedded-high`, `embedded-premium`, `premium-high` Not all voices are available in every quality.	`default`	`D22`, `P22` Not all voices are available in every quality. Not all qualities are available for every OS.
Language list	`afb-APG`, `arb-001`, `arb-MA`, `ben-IN`, `bho-IN-JH`, `bul-BG`, `cat-ES`, `cat-ES-VC`, `ces-CZ`, `cmn-CN`, `cmn-CND`, `cmn-TW`, `dan-DK`, `deu-DE`, `ell-GR`, `eng-AU`, `eng-GB`, `eng-GB-SCT`, `eng-IE`, `eng-IN`, `eng-US`, `eng-ZA`, `eus-ES`, `fas-APG`, `fin-FI`, `fra-BE`, `fra-CA`, `fra-FR`, `glg-ES-GA`, `heb-IL`, `hin-IN`, `hrv-HR`, `hun-HU`, `ind-ID`, `ita-IT`, `jpn-JP`, `kan-IN-KA`, `kor-KR`, `mar-IN`, `msa-MY`, `nld-BE`, `nld-NL`, `nor-NO`, `pol-PL`, `por-BR`, `por-PT`, `ron-RO`, `rus-RU`, `slk-SK`, `slv-SL`, `spa-AR`, `spa-CL`, `spa-CO`, `spa-ES`, `spa-MX`, `swe-SE`, `tam-IN-TN`, `tel-IN`, `tha-TH`, `tur-TR`, `ukr-UA`, `vie-VN`, `yue-CN`, `yue-HK`, `zho-CN-SC`, `zho-CN-SH`, `zho-CN-SN`	`arb-MA`, `deu-DE`, `eng-GB`, `eng-US`, `fra-FR`, `ita-IT`, `nld-NL`, `spa-ES`	`arb-001`, `ces-CZ`, `cmn-CN`, `cmn-TW`, `deu-DE`, `eng-AU`, `eng-GB`, `eng-IN`, `eng-US`, `fra-CA`, `fra-FR`, `hin-IN`, `hun-HU`, `ind-ID`, `ita-IT`, `jpn-JP`, `kor-KR`, `nor-NO`, `pol-PL`, `por-BR`, `por-PT`, `ron-RO`, `rus-RU`, `slk-SK`, `spa-AR`, `spa-ES`, `spa-MX`, `swe-SE`, `tha-TH`, `yue-CN`
SDK name	CSDK	Baratinoo	VTAPI
Voice size	`Embedded-compact` 800KiB ↦ 30 MiB `Embedded-pro` 3.4MiB ↦ 114 MiB `Embedded-high` 27MiB ↦ 316MiB `Embedded-premium` 40MiB ↦ 527 MiB `Premium-high` 191MiB ↦ 266 MiB	`default` 50MiB ↦ 300MiB	`D22` 4MiB ↦ 36MB `P22` 126MiB ↦ 450MiB
SDK code size	~50 MiB	~25 MiB	~5 MiB
Platform supported	WINDOWS - X86_64 LINUX - X86_64 ARMV7HF ARMV8 ANDROID 6.0 (API 23)	WINDOWS - X86_64 LINUX - X86_64 ARMV7HF ARMV8 ANDROID 6.0 (API 23)	WINDOWS - X86_64 LINUX - X86_64 ARMV7HF ARMV8 ANDROID 6.0 (API 23)
Hardware supported	MPU	MPU	MPU

Creation of custom voice possible: You can modify the voice using Ssml markups which change the pitch, the rate, the timbre, the volume, …
Emotion simulation: You can change the voice style using the Ssml markups i.e lively, neutral, formal, conversational, apologetic, didactic, … You can check this page for more details about the supported styles of each voice.
Emotion presets: You can play recorded emotion audio by writing the name of the record in your voice synthesis. You can check Voxygen voices features for more details about the supported emotion presets by voice.