Vokaturi

Vokaturi emotion recognition software

The Vokaturi software can understand the emotion in a speaker’s voice just as well as people can.

What is Vokaturi?

Emotion recognition by speech

The Vokaturi software reflects the state of the art in emotion recognition from the human voice. Its algorithms have been designed, and are continually improved, by Paul Boersma, professor of Phonetic Sciences at the University of Amsterdam, who is the main author of the world’s leading speech analysis software Praat.

ARE YOU HAPPY, SAD, ANGRY OR COOL?

Vokaturi can measure directly from your voice whether you are happy, sad, afraid, angry, or have a neutral state of mind. Currently the open-source version of the software chooses between these five emotions with 61,4 percent accuracy if it hears the speaker for the first time (as compared with human majority ratings).

Inviting all developers

As a developer you can easily include the Vokaturi software as a library in your own applications. You can choose between a free open-source license and a paid license.

What makes Vokaturi unique?
Screenshot

What makes us unique

Vokaturi emotion recognition can be easily integrated into existing software applications. Our software has been validated with existing emotion databases and works in a language-independent manner.

The Vokaturi software is available as a drop-in library for most modern platforms, including iOS, Windows, MacOS, and Linux.

Vokaturi B.V. is driven by its three founders:
Paul Boersma - expert in speech analysis software
Johnny Ip - expert in information management
Toni Gojani - coach and human behaviour specialist

View available licenses

The right license for you

Vokaturi maintains three separate versions of its software library for recognizing emotions. You can choose which one to use in your app.

License typeOpenVokaturiVokaturiPlusVokaturiPro
SummaryOpenVokaturi is the open-source version of the Vokaturi library and is distributed under the General Public License (GPL). OpenVokaturi may be appropriate for you if your app is in the stage of testing and development. With OpenVokaturi you can also distribute your app to your customers, as long as you do this under the GPL, which basically means that you make the source code of your whole app freely available. OpenVokaturi can be downloaded freely from our website, both as machine-code libraries and as source code.If you need more commercialization options for your app than OpenVokaturi can provide, for instance if you do not want to distribute your app’s source code, you can obtain VokaturiPlus, the paid version of the Vokaturi library. VokaturiPlus has a slightly higher emotion recognition rate than OpenVokaturi; this difference may also be a reason for you to opt for VokaturiPlus.If you need to train Vokaturi's networks for your own emotion-related classes, such as customer satisfaction, willingness to buy, customer retention, or first-time fix rate, you can obtain VokaturiPro. Vokaturi will provide dedicated support with the application of the trainable Vokaturi library in your project.
Accuracy on the five built-in emotions61.4 percent66.8 percent66.8 percent
Extendable to other emotion-related classes
Classification methodLinear discriminant analysisDeep neural networkDeep neural networks
Source codeOpenClosedClosed
PricingFreePaidPaid
LicenseGPLContact usAd hoc
Usable in your closed-source apps
Availability of API and librariesiOS, Windows, MacOS, LinuxiOS, Windows, MacOS, LinuxiOS, Windows, MacOS, Linux
Availability of source code
Availability of demo app code
SupportCommunityDedicatedDedicated
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  • OpenVokaturi license details

    OpenVokaturi is the open-source version of the Vokaturi library and is distributed under the General Public License (GPL). OpenVokaturi may be appropriate for you if your app is in the stage of testing and development. With OpenVokaturi you can also distribute your app to your customers, as long as you do this under the GPL, which basically means that you make the source code of your whole app freely available. OpenVokaturi can be downloaded freely from our website, both as machine-code libraries and as source code.

  • VokaturiPlus license details

    If you need more commercialization options for your app than OpenVokaturi can provide, for instance if you do not want to distribute your app’s source code, you can obtain VokaturiPlus, the paid version of the Vokaturi library. VokaturiPlus has a slightly higher emotion recognition rate than OpenVokaturi; this difference may also be a reason for you to opt for VokaturiPlus.

  • VokaturiPro license details

    If you need to train Vokaturi's networks for your own emotion-related classes, such as customer satisfaction, willingness to buy, customer retention, or first-time fix rate, you can obtain VokaturiPro. Vokaturi will provide dedicated support with the application of the trainable Vokaturi library in your project.

Stay up to date!

We regularly provide updates to our software for improved emotion recognition accuracy and new features.
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