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We Put 9 AI Voice Generators to the Test! Which One is the Best in 2023?

With the rise of artificial intelligence, AI voice generator tools have become increasingly popular, allowing users to create custom voices that sound scarily human-like and can be used for a variety of applications, from AI voice-overs to AI chatbots and more.

Try this AI-powered business tool:

  • Airgram is an AI-tool that records, transcribes, summarizes, and shares meeting conversations. It transcribes speech into searchable text and creates sharable video clips.

In this article, we will explore the most popular AI voice generators available today and how they are transforming the world of voice technology. Let’s get straight into it!

Check out more AI tools here!

Table of Contents

What is an AI voice generator?

An AI voice generator, also known as a text-to-speech (TTS) system or a speech synthesis system, is a technology that converts written text into spoken language.

These systems use artificial intelligence and machine learning algorithms to analyze and generate human-like speech. They can mimic the tone, pitch, and inflections of a human voice, making the generated speech sound natural and expressive.

Why use an AI voice generator?

AI voice generators have a wide range of applications, including:

  1. Accessibility: They help individuals with visual impairments or reading difficulties access written content by converting it into audio.
  2. Content creation: They enable the automated narration of content for videos, audiobooks, podcasts, and other multimedia projects.
  3. Virtual assistants: AI voice generators power the voices of virtual assistants like Siri, Alexa, and Google Assistant, making them more conversational.
  4. Customer service: Many companies use AI voice generators for interactive voice response (IVR) systems to handle customer inquiries and provide automated responses.
  5. Language translation: AI voice generators can convert text from one language into spoken text in another language, facilitating multilingual communication.
  6. Gaming and entertainment: They bring characters and narratives to life in video games, animations, and other forms of entertainment.
  7. Assistive technology: AI voice generators are used in devices like communication aids and speech-generating devices to help individuals with speech disabilities communicate.

These systems have evolved significantly in recent years, thanks to advancements in neural network models, such as GPT-3 and GPT-4, which can produce highly realistic and expressive synthetic voices. AI voice generators are widely available through APIs and software development kits (SDKs), allowing developers to integrate them into various applications and services.

In no particular order, let’s take a look at 5 different AI voice generators.

1. Lyrebird

lyrebird voice generator

Lyrebird is an AI voice generator that uses deep learning algorithms to create realistic, natural-sounding voices. With Lyrebird, users can create custom voices that can be used for a wide range of applications, including voice-overs, audiobooks, and virtual assistants.

Lyrebird’s voice generator can also be integrated into other applications and devices, making it a versatile tool for developers. The only downside is that right now it appears there are only American accents available.

How to use Lyrebird

  • Create your free account 
  • Download the program (Descript) onto your Mac or Windows 
  • Sign in 
  • You have a limit of 1001 words with the free plan 
  • You can upload your own voice file or use one of their stock voices
  • Once you are happy with the voice you can download the audio file

Pros of Lyrebird AI voice generator:

  • Realistic and natural voices
  • Versatility in generating voices in different languages and accents
  • Time and cost savings in voice production
  • Accessibility and inclusivity for individuals with speech impairments or disabilities

Cons of Lyrebird AI voice generator:

  • American accents only
  • Lack of emotional depth compared to human voice actors

Pricing

  • Free plan is available
  • Pricing starts at $12.00 a month

Availability

To use Lyrebird, you need to download the Descript program (free download) onto your Mac or Windows computer.

2. Replica Studios

ai voice actors

Replica Studios is an AI voice generator that allows users to create custom voices for use in video games, animation, and other media.

With Replica Studios, users can create unique voices that match specific characters or personalities. The tool uses machine learning algorithms to generate natural-sounding voices that can be customized with different accents, emotions, and speech patterns.

How to use Replica

  • Create a free account 
  • Download the program onto your Mac or Windows 
  • Sign in 
  • Explore the AI voices library
  • Go to sandbox,
  • Choose a voice
  • Add lines of dialog and decide how you want the actor to deliver the line 
  • Once you are happy with the voice you can download the audio file

Pros of Replica Studios:

  • High-quality audio production
  • Diverse voice options
  • Customization and flexibility
  • Time and cost savings

Cons of Replica Studios:

  • Dependence on external service

Pricing

  • Free plan is available
  • Pricing starts at $36.00 a month (includes commercial licensing)

Availability

To use Replica, you need to download the program (free download) onto your Mac or Windows computer.

3. PlayHT

PlayHT is an AI voice generator that can actually clone your own voice which is pretty cool! With PlayHT, users can upload a recording of their own voice or choose from a variety of voices in multiple languages and customize the voice’s speed, pitch, and volume.

The tool also supports the creation of custom voices, allowing developers to create unique voices for use in their applications. You can 2500 free words with their free plan.

How to use PlayHT

  1. Create a free account 
  2. Upload 30 seconds of audio to clone your voice
  3. Write the text for what you want to say 
  4. Download the file – its pretty good!

Pros of PlayHT:

  • Wide availability
  • Multilingual support
  • Natural-sounding voices
  • Voice Clone options

Cons of PlayHT:

  • On the more expensive side

Pricing

  • Free plan is available
  • Pricing starts at $31.20 a month

Availability

To use PlayHT, simply sign into your account through their website.

4. Murf.ai

Murf.ai is an AI voice generator that also converts text into lifelike speech. With Murf, users can choose from a wide variety of different voices, including many different accents and languages.

The tool also supports the creation of custom voices, allowing users to create unique voices that match specific characters or personalities.

How to use Murf.ai

  • Create a free account 
  • Choose a voice (lots to choose from) 
  • Enter your text
  • When you are happy with it download the file

Pros of Murf.ai:

  • High-quality voices
  • Multilingual support
  • Customization options
  • Integration and scalability

Cons of Murf.ai:

  • Pricing structure

Pricing

  • Free plan is available
  • Pricing starts at $31.20 a month

Availability

To use Murf.ai, simply sign into your account through their website.

5. Voice Booking

Voice Booking is another AI-powered voice generator that converts written text into natural-sounding speech. With Voice Booking, users can choose from a variety of voices in multiple languages and customize the voice’s pitch, speed, and volume.

How to use Voice Booking

  • Create a free account 
  • Choose a character
  • Insert your text
  • If you want to edit the voice you’ll need to upgrade to a paid account

Pros of Voice Booking:

  • High-quality voices
  • Multilingual support
  • Customization options
  • Integration capabilities

Cons of Voice Booking:

  • Learning curve and technical implementation

Pricing

  • Free plan is available
  • Pricing starts at $6.00 a month

Availability

To use Voice Booking, simply sign into your account through their website.

6. Google Text-to-Speech (Google TTS)

Google TTS is a part of the Google Cloud platform and offers high-quality, natural-sounding voice generation.

The voice quality are really refined and great. You can control, and change the speed as needed. One of the major advantages is that it’s available in so many languages. Because Google’s ecosystem is huge this app can be seamlessly integrated anywhere.

How to use Google Text-to-Speech

  • You can integrate Google TTS into your applications using the Google Cloud Text-to-Speech API.

Pros

  • High-quality voices
  • Extensive language support
  • Integration with other Google services
  • Customizable voice parameters

Cons

  • May be cost-prohibitive for heavy usage
  • Requires coding skills to integrate

Pricing

Google TTS pricing varies based on usage. There is a free tier with limited usage, and paid plans are based on the number of characters processed.

7. Amazon Polly

Amazon Polly is Amazon Web Services’ TTS service, known for its lifelike speech synthesis and wide language support.

This platform feels more user-friendly and engaging. While Polly offers a range of voices and languages, deeper customization of voice characteristics or creating entirely unique voices isn’t as straightforward. 

For extensive use, especially for larger projects or businesses, the costs can accumulate, making it a substantial expenditure.

How to Use 

Developers can access Amazon Polly through the AWS Management Console or API calls.

Pros 

  • High-quality voices 
  • Multilingual support 
  • Easy integration with AWS services 
  • Customizable voice styles

Cons

  • Steep learning curve 
  • High cost concerns for large-scale usage

Pricing 

Amazon Polly has a pay-as-you-go pricing model based on the number of characters converted, with a free tier for limited use.

8. IBM Watson Text to Speech

IBM Watson Text to Speech offers cloud-based TTS capabilities with various customization options.

This platform is very user-friendly and intuitive making it a great choice for the everyday person who doesn’t have a lot of experience with AI. 

How to Use

You can access Watson Text to Speech through the IBM Cloud platform or API.

Pros 

  • Customizable voice styles 
  • Natural-sounding voices 
  • Integration with IBM’s broader AI and cloud services

Cons 

  • Best suited for those already using IBM Cloud

Pricing 

IBM Watson Text to Speech has a pay-as-you-go pricing model based on the number of characters converted, with a limited free tier.

9. Microsoft Azure Cognitive Services – Text to Speech

Microsoft’s Azure Cognitive Services offer a Text to Speech API that provides realistic voice synthesis.

The good thing about this program is that it doesn’t require an internet connection and can be run and stored locally. That being said, the pricing is costly.

How to Use 

Developers can access this service through the Azure portal or API calls.

Pros

  • Natural voices
  • Well-integrated with Azure services
  • Support for multiple languages 
  • Customizable voice parameters

Cons 

  • More beneficial if you’re already using Azure services

Pricing 

Azure Text to Speech has a pay-as-you-go pricing model based on the number of characters processed, with a free tier for limited use.

FAQs about AI voice generators

What is the best AI voice generator?

Based on my findings, the best AI voice generator is PlayHT. The voice clone option is scarily good. Check it out!

Are there any free AI voice generators?

Every AI voice generator mentioned in this article has a free plan available but you will need to upgrade to access more customisation features.

How do AI voice generators work?

AI voice generators use deep learning models, particularly techniques like text-to-speech (TTS) synthesis, which analyze and generate speech based on textual input, phonemes, and linguistic rules.

What are the practical applications of AI voice generators?

AI voice generators are used in various applications, including virtual assistants (like Siri or Alexa), accessibility tools for people with disabilities, voiceovers for videos and commercials, customer service chatbots, and more.

Are AI voice generators capable of mimicking specific voices, like celebrities?

Some AI voice generators can mimic specific voices, but this often requires a substantial amount of training data from the targeted individual. It may also raise ethical and legal concerns, such as privacy and copyright issues.

What are the challenges with AI voice generators?

Challenges include generating truly natural-sounding speech, handling emotional nuances, avoiding biases in generated content, and ensuring privacy and security when using AI voices.

Can AI voice generators be customized?

Yes, many AI voice generators allow customization of pitch, speed, tone, and other characteristics to suit specific needs and preferences.

Are there any ethical concerns with AI voice generators?

Yes, there are ethical concerns related to impersonation, misuse, and potential harm caused by AI-generated voices. It’s important to use AI voice technology responsibly and transparently.

What are the differences between open-source and commercial AI voice generators?

Open-source AI voice generators are often freely available but may have limitations in terms of voice quality and customization. Commercial solutions offer more advanced features, support, and higher-quality voices but come with a cost.

Are there any privacy concerns when using AI voice generators?

Yes, there can be privacy concerns, especially when using AI voices for personal data or sensitive content. Users should be cautious about sharing personal information through AI-generated voices.

What is the future of AI voice generators?

The future of AI voice generators is likely to involve even more realistic and adaptable voices, improved emotional expressiveness, better handling of multiple languages and dialects, and increased integration into various industries and devices.

How can I get started with AI voice generation?

You can get started with AI voice generation by exploring available tools and platforms, many of which offer user-friendly interfaces and documentation to help you generate voices for your specific needs.

Are AI-generated voices replacing human voice actors entirely?

AI-generated voices are becoming more common, especially for certain applications like IVR systems and automated customer service, but human voice actors still play a crucial role in many areas, particularly in entertainment and narration where a personal touch and emotional expression are essential.

Wrapping it up

AI voice generators have become increasingly popular this year, allowing users to create custom voices for a wide range of applications.

The tools mentioned above are some of the best options available today, and they continue to evolve and improve as AI technology advances. As the demand for AI voice generators continues to grow, it’s likely that we’ll see even more innovative tools and applications emerge in the future!

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