1. Viettel AI Text-to-Speech Software

As a product developed by Viettel's Data Services and Artificial Intelligence Center (Viettel AI), Viettel AI text-to-speech software applies the world's most advanced technology in natural language processing, audio processing, deep learning, and speech synthesis to create Vietnamese voices with smoothness, clarity, and high accuracy.

With investment in AI technology, this software supports diverse voices from gender to region, ensuring full reflection of the richness in Vietnamese phonetics and intonation. In addition, with Viettel AI's text-to-speech software, you can also adjust the speech speed to be up to 3 times faster or slower than normal speed.

More specifically, Viettel AI's text-to-speech software has outstanding features that everyone desires to own, such as:

• Voiceovers for 3 regions with 16 different voice qualities: North (5 female voices, 3 male voices); Central (1 female voice, 1 male voice); South (5 female voices, 1 male voice)
• Naturalness equivalent to a real person.
• Automatic pauses and high expressiveness.
• Can be easily connected to any application or device via API.
• Supports a variety of audio formats such as MP3, WAV.

Due to the versatility of this text-to-speech software, Viettel AI has been widely applied in many fields, typically education, healthcare, automated call centers, etc. Currently, users can use 50,000 characters free for 1 month from the date of account registration.

To experience Viettel AI's superior text-to-speech service, users will follow these steps:

Step 1: Access the Viettel AI website and register for an account.

Less than 1 minute to create an account with Viettel AI's text-to-speech software.

Step 2: After successful login, click on the "Service Store" section on the homepage and select "Text-to-Speech Service."

Viettel AI's text-to-speech software has a user-friendly interface.

Step 3: Enter the content you want to read aloud in the frame as shown in the illustration below. In addition, you can flexibly customize the voice and change the reading speed according to your needs. Then, click "Read Text."

You can customize the voice and reading speed when using this text-to-speech software.

Step 4: Once complete, download the video to your computer in .mp3 or .wav format.

Viettel AI's text-to-speech software supports multiple audio formats.

2. FPT.AI Text to Speech Software

FPT Corporation's FPT.AI Text to Speech software is built on the foundation of machine learning, deep learning, and natural language processing techniques. Simultaneously, FPT's technical team has also conducted in-depth research on linguistics and physics to create a natural and vivid Vietnamese text-to-speech service like a real person.

By using speech synthesis technology, FPT.AI Text to Speech has been refined to develop characteristic regional accents while flexibly adapting to different contexts. Users can use this text-to-speech software to create a fast-paced tone when reviewing movies or a slow-paced tone when reading books and stories to children.

Specifically, FPT.AI Text to Speech software has the following outstanding features:

• 9 voices spread across 3 regions: North, Central, South.
• Reading speed and voice volume can be customized.
• Supports Search & Replace, Undo, and Redo features.
• Easy to integrate into business applications or websites.

The process of experiencing FPT.AI Text to Speech's free text-to-speech service includes:

Step 1: Access the FPT.AI website to register for an account.

You need an account to use FPT.ai Text to Speech service.

Step 2: After registering for an account and being redirected to the website https://console.fpt.ai as shown in the image, activate "Text to Speech," then create an API Key as required.

Activate "Text to Speech" to use this text-to-speech service.

Create a unique API Key for the project you want to read aloud.

Step 3: Go to the Applications section, select Voicemaker, and click "Start" to experience the text-to-speech service.

Access Voicemaker to use FPT.AI Text to Speech service.

Step 4: You can enter content into the white frame or choose to paste the web link you want to read aloud into the system. Then, select "Process" for the system to convert the text into speech. Additionally, shortcuts for editing text will be displayed as shown below.

FPT.AI Text to Speech service has many shortcuts for editing text.

Step 5: After completing the text-to-speech process as desired, select "Convert to Speech" to download the audio file to your computer.

FPT.AI Text to Speech service supports downloading audio files in MP3 format.

3. Zalo AI

Zalo AI's text-to-speech software is developed by VNG Corporation – the owner of Zalo. With the goal of optimizing the experience for general users and businesses in all aspects of life, this software promises to deliver natural and relatable voices thanks to the application of deep learning models, especially neural networks that play a role in training voices.

Zalo AI's text-to-speech software boasts fast processing speed and high quality. At the same time, the software provides flexible customization of voice volume, speed, and intonation so that users can utilize it for various purposes. Currently, Zalo AI supports 4 Vietnamese voices, including 2 Northern and 2 Southern accents.

Based on the criteria of simplicity and convenience, Zalo AI's text-to-speech software possesses outstanding features such as:

• No login required to use.
• Supports both male and female voices.
• Standard, clear, and easy-to-listen audio quality.
• Speech speed can be freely adjusted before and after conversion.

With the criteria of simplicity and convenience, Zalo AI's free text-to-speech service only requires a few simple steps to experience, specifically:

Step 1: Access the Zalo AI homepage, click on "Products," and select "Text-to-speech."

The interface of Zalo AI's text-to-speech software is quite simple.

Step 2: Proceed to enter the content you want to read aloud. You can flexibly customize the voice and reading speed according to your needs. Then, select "CONVERT INTO SPEECH" to complete the process. Note that if you want to download the audio file to your device, you need to use a long-term paid package for Zalo AI's text-to-speech software.

Zalo AI's text-to-speech software only takes 2 simple steps to complete.

4. VNPT Smart Voice

VNPT Smart Voice text-to-speech software is a breakthrough product from VNPT Telecommunications Group. By applying quantum computing technology, natural language processing technology, deep learning technology, and speech synthesis technology, this software promises to bring an intelligent service experience to all customers.

Accordingly, VNPT Smart Voice offers many voices for customers to freely use for various purposes. VNPT Smart Voice text-to-speech software has been widely applied for reading books, reading newspapers, virtual assistants, e-lectures, thereby helping businesses significantly save time, operating costs, and optimize work efficiency.

Above all, the outstanding features of this software include:

• Full range of male/female voices for 3 regions: North, Central, South.
• Pitch, speed, and pauses of the voice can be customized according to user requirements.
• Predicts the reading of foreign words according to international conventions and standardizes input text such as numbers, dates, addresses, document numbers, etc.
• Multi-platform integration.

To use the VNPT Smart Voice text-to-speech service, you will go through the following steps:

Step 1: Access the VNPT Smart Voice homepage, click on "Services," and select "Text to Speech." Then, scroll to the bottom of the page and click "Start Now."

You can use the VNPT Smart Voice text-to-speech service directly on the website.

Select "Start Now" to experience.

Step 2: Next, register for an account to use. The system also supports quick login with a Google account.

You can quickly log in with a Google account with this text-to-speech service.

Step 3: After successful account creation, select "Use Package" and then enter the content you want the system to read aloud. You can choose male/female voices and regions as you like, as well as adjust the speed and pitch of the voice as desired.

You can customize the parameters for the voice with this text-to-speech software.

Step 4: Finally, click on "I'm not a robot" and then select "CREATE AUDIO FILE" for the system to read the text aloud.

VNPT Smart Voice's text-to-speech process goes through 4 steps.

5. Vbee Text to Speech

Developed by Vbee Data Processing Services and Solutions Company, Vbee Text to Speech applies advanced speech recognition and synthesis technology to read text accurately with studio-quality sound, thereby enhancing users' content creation experience.

Vbee Text to Speech software supports flexible voices for various situations, such as advertising, movie reviews, e-lectures, etc. Moreover, this software also provides professional audio editing features for users to personalize content to specific target audiences.

The superiority of Vbee Text to Speech can be clarified by outstanding features such as:

• Over 400 AI voices and more than 50 different languages, capable of flexibly switching to male, female, and children's voices.
• Realistic and emotional voices with subtle emphasis like a real person.
• Freely adjust volume, pitch, speed, and even has interesting sound effects like echo.
• Can create a personal dictionary to store words that users specify to be pronounced as desired.

Vbee Text to Speech's free text-to-speech service is quite easy to use, specifically:

Step 1: Visit the Vbee website and select "Free Trial" to experience.

Click "Free Trial" to use Vbee's text-to-speech service.

Step 2: Then, proceed to register for an account when redirected to the window below.

Vbee's text-to-speech service supports account registration in various ways.

Step 3: Next, the Vbee Text to Speech interface will appear as below. Click "Convert Text to Speech" to use.

Click "Convert Text to Speech" to experience.

Step 4: Proceed to enter the text you want to convert to speech. You can customize the voice by clicking on the selection area below.

Vbee's text-to-speech service supports many different voices.

In addition, Vbee Text to Speech also supports uploading files from your computer for the text-to-speech feature.

You can paste web links or upload files in various formats to use.

Step 5: You can customize the voice with audio quality adjustment features, add pauses, and emphasis.

Vbee Text to Speech service supports flexible customization.

Step 6: Once complete, click "Convert Text." Then, click "Download" to get the audio file in .mp3 or .wav format.

Download audio files in .mp3 or .wav format with this text-to-speech software.

Thus, text-to-speech software holds extremely practical value in modern life, regardless of the field – education, marketing, customer care, or healthcare. This service has significantly contributed to enhancing user experience and boosting work efficiency.

However, to fully experience the 5 free text-to-speech software options above, Viettel AI encourages you to consider investing in a paid plan. Additionally, if you have any questions about text-to-speech software, please contact Viettel AI via:

Hotline: +84 98 1900 911

Email: [đã xoá địa chỉ email]

Hanoi Address: Ministry of Planning and Investment Building – No. 7 Ton That Thuyet Street, New Urban Area, Cau Giay District, Hanoi

HCMC Address: 23rd Floor, Viettel Complex Building, 285 Cach Mang Thang Tam Street, Ward 12, District 10, Ho Chi Minh City

Website: https://viettelai.vn/