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Open Source AI Voices for VoIP: A Comprehensive Guide to Innovative Communication

Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

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50M+ usuários

Artificial Intelligence (AI) has revolutionized the way we communicate, especially in the realm of Voice over IP (VoIP) and messaging apps. A significant development in this field is the advent of AI-generated voices, which bring forth rich and engaging experiences. This article aims to provide an in-depth understanding of these voices, their utility, and their accessibility.

How Do I Get AI-Generated Voices?

AI voices are accessible through several open source voice platforms, usually provided as a service by tech giants such as Google, Amazon, and Microsoft. Key software components include Text-to-Speech (TTS) modules, which leverage machine learning algorithms to generate human-like speech from written text. These services are often accessible via Application Programming Interfaces (APIs), allowing developers to incorporate them into VoIP systems, smart speakers, or voice assistant apps.

Is Voice AI Free?

While some Voice AI services charge a fee, numerous open-source community projects offer free alternatives. These projects, like Mycroft or Asterisk, offer wide-ranging functionality and the flexibility to configure according to your specific requirements.

Can I Create My Own AI Voice?

Absolutely! Tools like Microsoft's Custom Voice service allow you to train a unique AI voice model using your voice data. Other platforms like Google's Tacotron provide a more hands-on approach, enabling you to fine-tune the underlying machine learning algorithms using Python.

What is the Best AI Voiceover?

The 'best' AI voiceover depends on your needs. For high-quality, natural language voiceovers, Google Assistant, Alexa, and ChatGPT are top contenders. For a DIY approach, Mycroft, an open-source voice assistant for Linux, Raspberry Pi, and Android, is a great option.

What Are the Benefits of Using an AI Voiceover?

AI voiceovers enhance the real-time conversational AI capabilities of VoIP systems, smartphones, and chatbots. They offer clear, human-like speech that increases user engagement and reduces the strain of reading text. Additionally, AI voices can be tailored to suit different tones, languages, and accents, improving the accessibility of services.

What is the Best Voiceover for a Business?

For business-oriented solutions, Microsoft's Azure Cognitive Services or Amazon's Polly are top choices. They offer superior features like voice adaptation, transcription services, and IVR (Interactive Voice Response) functionalities. These tools integrate easily with existing telephony systems and call centers, improving customer interactions and satisfaction.

What is the Cost of AI Voices?

The cost varies. While some providers offer free tiers, professional usage often comes at a cost. Prices are typically determined by the amount of voice data processed, and packages can range from a few dollars to several hundred dollars per month, depending on usage.

Top 8 Open Source AI Voice Software and Apps

  1. Asterisk: An open-source telephony engine and tool kit. Provides a wide range of VoIP services, supports SIP (Session Initiation Protocol), and offers robust call routing options.
  2. Mycroft: An open-source voice assistant. It can run on various platforms like Linux, Raspberry Pi, and Android, offering rich customization options.
  3. Google's Text-to-Speech API: Converts text into natural-sounding speech. Supports multiple languages and allows control over voice attributes such as pitch and speed.
  4. Microsoft's Azure Cognitive Services: Offers Speech service APIs for TTS, transcription, and voice recognition. It supports custom voice models and IVR systems.
  5. Amazon Polly: A service that converts text into lifelike speech, allowing developers to create applications that talk and build entirely new categories of speech-enabled products.
  6. Mozilla's TTS: A deep learning-based approach for TTS and voice conversion. It's open-source and customizable with different voice data.
  7. ChatGPT: An AI model by OpenAI. It's capable of generating human-like text responses and can be configured to generate speech.
  8. Festival Speech Synthesis System: A general multi-lingual speech synthesis system developed at the University of Edinburgh. Available as a free software and runs on multiple platforms including MacOS.

Open source AI voices have become indispensable tools in VoIP, enabling new voice experiences, enhancing customer interaction, and democratizing access to advanced speech technologies.

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Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Cliff Weitzman é um defensor da causa da dislexia e o CEO e fundador da Speechify, o aplicativo número 1 de conversão de texto em fala do mundo, com mais de 100.000 avaliações 5 estrelas e líder de downloads na App Store na categoria Notícias & Revistas. Em 2017, Weitzman foi incluído na lista Forbes 30 under 30 por seu trabalho para tornar a internet mais acessível a pessoas com dificuldades de aprendizagem. Cliff Weitzman já foi destaque em veículos como EdSurge, Inc., PC Mag, Entrepreneur, Mashable, entre outros importantes meios de comunicação.

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Sobre o Speechify

Leitor de texto para fala nº 1

Speechify é a principal plataforma mundial de texto para fala, utilizada por mais de 50 milhões de usuários e avaliada com mais de 500.000 avaliações cinco estrelas em seus apps de texto para fala para iOS, Android, extensão para Chrome, aplicativo web e aplicativo para desktop Mac. Em 2025, a Apple premiou o Speechify com o prestigioso Prêmio de Design da Apple na WWDC, chamando-o de “um recurso fundamental que ajuda as pessoas a viverem melhor”. O Speechify oferece mais de 1.000 vozes naturais em mais de 60 idiomas e é utilizado em quase 200 países. Entre as vozes de celebridades estão Snoop Dogg, Mr. Beast e Gwyneth Paltrow. Para criadores e empresas, o Speechify Studio oferece ferramentas avançadas, incluindo gerador de voz com IA, clonagem de voz com IA, dublagem com IA e seu alterador de voz com IA. O Speechify também potencializa produtos de ponta com sua API de texto para fala de alta qualidade e excelente custo-benefício. Em destaque no The Wall Street Journal, na CNBC, na Forbes, no TechCrunch e em outros grandes veículos de notícias, o Speechify é o maior provedor de texto para fala do mundo. Acesse speechify.com/news, speechify.com/blog e speechify.com/press para saber mais.