What is COEIROINK? Comprehensive Explanation of Features, Usage, and Commercial Use of the Speech Synthesis Software

COEIROINK is speech synthesis software that can read text aloud using characters' voices full of personality.

It is attracting attention among video producers and content creators.

In this article, we will explain in detail the information necessary for those who want to use COEIROINK, such as the features of the speech synthesis software COEIROINK, installation methods, how to use it, and recommended text-to-speech methods.

If you are considering using COEIROINK or are looking for a way to read text aloud, please refer to this article to find the perfect speech synthesis software and reading method for you.

【Free & Commercial Use OK】Recommended Latest AI Text-to-Speech Service

There is a free reading service recommended for you who want to create narrated audio.

That is the latest AI service, Ondoku.

Ondoku is an AI reading service that can be used for free.

It can be used in any environment, including Windows, Mac, and Linux, as well as iPhone and Android smartphones.

Usage is very simple—just enter your text and you're good to go!

No installation required, so you can use it right away, and it allows for comfortable reading regardless of your PC's specifications.

Furthermore, Ondoku is free and OK for commercial use.

It is also ideal for YouTube monetization.

Why not try making a video for free using the easy-to-listen and realistic audio of Ondoku?

What is COEIROINK? Explaining the Features of the Speech Synthesis Software

First, we will briefly explain what kind of speech synthesis software COEIROINK is.

What kind of speech synthesis software is COEIROINK?

COEIROINK is speech synthesis software developed individually by Shirowani-san.

It is software that appeared in 2021 and has undergone repeated updates since then.

A feature of COEIROINK is that it is software developed primarily for individual creative use.

Because development began with the motivation of "wanting to give a voice to my own creative characters," it can be used for the purpose of adding voices to original characters.

Software that can read aloud with character voices may not permit use for other characters in some cases.

In contrast, with COEIROINK, it is possible to easily use it for individual creations such as doujin audio works, voice dramas, and audio plays.

What are the features of COEIROINK?

COEIROINK is speech synthesis software that is closely related to the open-source reading software "VOICEVOX."

It uses its own proprietary AI speech synthesis engine, but Version 1 utilized the VOICEVOX UI.

However, from Version 2, which appeared in 2023, it has its own unique UI and the operation method differs from VOICEVOX.

A characteristic of COEIROINK when compared to other speech synthesis software is that it excels at emotional expression.

Precisely because it assumes creative use as its main application, voices specialized in various expressions—from basic to niche—are provided.

However, because advanced expression is possible, the file download size is quite large.

MYCOEIROINK function that allows you to create original voices

The MYCOEIROINK function is also one of the major features.

By using this function, users can create their own original voice models.

MYCOEIROINK created by users are published on the official website and can be downloaded and used.

However, when using user-created voices, the terms of use differ for each, so please check them before use.

Credits are required for using COEIROINK

When using COEIROINK, be careful with the terms of use.

It is necessary to provide credit notation within content such as videos or in the description field.

For credit notation, you must clearly state both:

• That you are using "COEIROINK"
• The name of the character used

For example, if you use Tsukuyomi-chan for the voice, you would write it as "COEIROINK: Tsukuyomi-chan."

Points to note when using COEIROINK for commercial purposes

Naturally, you must also comply with other terms of use.

While COEIROINK is software created primarily for creative activities, commercial use is also possible.

However, for commercial use, you must also comply with the terms of use for the character voice.

Note that commercial use is prohibited for some voices.

Points to be particularly careful about in the COEIROINK terms of use

Additionally, when using COEIROINK, expressions that criticize or attack others, or expressions that call for agreement with politics, religion, or ideology, are prohibited.

Furthermore, when performing intense expressions, appropriate zoning is required.

In this way, when using COEIROINK, it is necessary to comply with all terms of use for the software itself and for each character.

While it is useful reading software for video production and creative activities, please use it carefully so as not to violate the terms of use.

Installable software compatible with Windows, Mac, and Linux

COEIROINK is compatible with three OSs: Windows, Mac, and Linux.

Both CPU and GPU versions are available for Windows and Linux.

GPUs are only supported for NVIDIA products.

Additionally, 3GB or more of GPU graphic memory is required.

Because COEIROINK achieves high-quality speech synthesis, the file size is quite large.

Make sure you have sufficient free space.

Because it is necessary to save files of several hundred MB, downloading may take a long time depending on the internet connection you are using.

Also, note that it may not be comfortable to use depending on your PC specifications.

【Free】Recommended reading software with no installation required

Ondoku is a recommended reading software that requires no installation and can be used comfortably regardless of PC specifications.

Since it is a web app used via a browser, you can start reading immediately without downloading or installing.

Even on PCs without a GPU, you can smoothly synthesize speech from text.

And Ondoku is free!

It can be used without registration or login, so why not try using Ondoku for free for your YouTube videos or audio works?

Official and Certified Characters of COEIROINK

Many characters are available in COEIROINK.

Here, we introduce the official and certified characters.

The difference between Official and Certified characters

COEIROINK characters are divided into two categories.

Official characters are characters produced and provided by the developer of COEIROINK.

• Reco / Nako
• Kanata

These are available.

Because they do not have a specific voice, they can be used for dubbing with any voice you like.

On the other hand, certified characters are characters created by external creators that can be used with COEIROINK.

For these, both illustrations and voices are prepared for each character.

The only initially installed character is "Tsukuyomi-chan (Reisei)," while other characters can be downloaded within the software.

Since unique terms of use are set for both types of characters, confirmation is required before use.

We will briefly introduce some of the characters.

Nako & Reco | Twin girl characters for freely dubbing voices

Nako and Reco are official characters of COEIROINK.

They are twin girls and are used in the main visual of the COEIROINK official website.

They are provided as "official characters without voices," and you can freely set your favorite synthetic voice.

Kanata | A male character for freely dubbing voices

Kanata is also an official character of COEIROINK.

This is a male character, and no specific voice is set.

Just like Nako and Reco, he is provided as an "official character without a voice," and you can freely set your favorite synthetic voice.

Tsukuyomi-chan | An easy-to-use female character voice

Tsukuyomi-chan is the certified character that is installed first when you start using COEIROINK.

She is widely used as a free material character and features a bright, friendly female voice.

COEIROINK is a software developed as a result of the "Tsukuyomi-chan Talk Software," making her a character with special meaning for COEIROINK.

Her use is frequently seen on video posting sites like YouTube and Niconico Douga.

Tsukuyomi-chan has styles such as "Reisei" (Calm), "Oshitoyaka" (Gentle), and "Genki" (Energetic), which can be used according to the content.

MANA & KANA | Character voices based on VTuber voices

MANA and KANA are character voices created based on VTuber voices.

MANA is based on the voice of VTuber Mana Shikanama, and KANA is based on the voice of VTuber Kana Manaka.

MANA can read in a high, bright voice, while KANA can read in a lower, calm voice.

MANA has a particularly large variety of styles available.

Dia & Arma | Female character voices themed on angels and devils

Dia and Arma are certified characters themed on angels and devils.

They are provided by "Lusty*Kiss Production," which produces virtual idols and creates doujin works such as voice dramas and videos.

The bright-voiced Dia and the calm-voiced Arma are paired characters capable of rich emotional expression.

Many other characters are also available

COEIROINK has many other diverse characters.

Since many characters are voiced by professional voice actors, you can use a rich variety of voices perfect for creation.

Of course, besides these, it is also possible to add user-created voices from MYCOEIROINK.

How to Install COEIROINK 【Explained for Windows 11】

To use COEIROINK, you need to download and install the software from the official website.

From here, we will briefly explain how to install COEIROINK.

Detailed Download Steps

First, access the COEIROINK official website and download the installation file.

Click "Download" from the menu.

The download screen has opened.

• Windows (CPU version)
• Windows (GPU version)
• Mac
• Linux

Choose the one that matches the computer you are using.

*If selecting the GPU version, your PC must be CUDA-compatible. GPUs are only supported for NVIDIA products.

Downloads are possible from two locations:

• BOOTH (Creative work publishing service)
• DropBox (Cloud storage)

After selecting the download destination and pressing "Download," the page to download the file will open.

Because COEIROINK has a large download size (approx. 600MB), it is recommended to use a stable internet connection.

COEIROINK Installation (Unzipping) Steps

COEIROINK works just by unzipping the downloaded file.

However, because the file is double-compressed, you need to perform an additional extraction process after unzipping the ZIP file.

Once the COEIROINK download is complete, unzip the ZIP file.

Run the exe file found inside the unzipped folder.

A black window (terminal, console) will open, and further extraction processing will be carried out.

When the process finishes, another new folder will be created.

By double-clicking "COEIROINKv2.exe" inside it, you can launch COEIROINK.

The folder containing the program can be moved to another location if necessary.

Upon the first launch, you must agree to the Terms of Use.

Clicking "Terms of Use" in the window will open the terms of use page in your browser.

After reading the terms of use, return to the COEIROINK screen, and the "Agree" button will become clickable.

Pressing "Agree" will allow you to operate the COEIROINK editing screen.

Explaining the Basic Usage of COEIROINK

Next, we will explain the basic operating methods of COEIROINK in detail.

Basic text-to-speech method in COEIROINK

On the COEIROINK editing screen, character icons and text entry fields are displayed.

Immediately after installation, only Tsukuyomi-chan (Reisei) is installed.

Entering content to be read aloud

Enter the content to be read in the text box next to the small character icon.

Upon entry, the reading intonation is displayed at the bottom of the screen.

Clicking "+" allows you to add a new text entry field.

Actually reading aloud to check the audio

By clicking the large character icon or the small triangle play button below it, you can actually read the audio aloud to check it.

At this time:

• Character icon: Only the selected text box is played
• Small triangle play button: Everything from the selected text box onwards is played

in this manner.

Adding characters (voices) to COEIROINK

To add a character (voice), first click the person-shaped icon above the large character icon.

The menu will open; click "Character Download."

The character download screen will open.

Note that it takes a little time to retrieve character information.

Once character information is retrieved, the character list is displayed.

When the character list appears, click "Update Character Information" for the character you wish to install.

As an example, we will add the voice of MANA.

A confirmation screen will open; click "Agree and Update Information."

The character information updating process will begin.

This process takes some time.

Since file downloads also occur at this time, it is recommended to do this on a stable internet connection.

The process is complete.

"MANA (Normal)" is automatically installed.

To add other styles, click "Download" next to the voice style.

For example, if you click "MANA (Isshoukenmei)," a download will occur and the voice will be added.

After adding a voice, you need to close COEIROINK and restart it once.

Switching characters

After adding a character, clicking the small icon next to the text box allows you to switch characters.

As shown, "MANA," which was added earlier, has been added to the options.

By selecting a character and style, you can switch characters (voices) like this.

Since characters and styles can be switched for each text box:

• Reading with multiple characters
• Reading with multiple styles of the same character

such usage is possible.

How to export reading audio from COEIROINK

To export audio, click the folder mark located above the large character icon.

Select the export method from the opened menu.

In COEIROINK, the following are possible:

• Export selected audio
• Export all audio
• Connect and export all audio

In "Export all audio," the audio is exported as separate WAV files for each text box like this.

In "Connect and export all audio," the entire edited content is exported as a single WAV file in a connected state.

How to save COEIROINK projects

COEIROINK editing content can be saved as a project.

To save, select from the menu that opens when you click the folder mark:

• Save project as...
• Save project

In this way, COEIROINK allows you to create audio for videos and creative activities using various character voices.

However, note that downloading the software itself and downloading voices takes considerable time.

Recommended Speech Synthesis Software You Can Use for Free 【No Installation Required】

COEIROINK is a very attractive speech synthesis software.

However, downloading large files and installation are required before use.

Also, it may not be comfortable to use if PC specifications are low.

In such cases, speech synthesis services that can be used without installation are recommended!

【Free】Easy-to-use speech synthesis service requiring no installation

Ondoku is a speech synthesis service that can be used immediately without installation.

A feature is that anyone can use it for free easily!

Since it adopts the latest AI speech synthesis engine, you can read aloud with realistic, easy-to-hear audio perfect for videos and creative works.

Because complex settings and installation work are unnecessary, Ondoku is also ideal for beginners.

You can comfortably synthesize audio without worrying about PC specs, capacity, or connection speeds.

A rich variety of realistic voices, including women, men, and children

There are 16 types of voices available for Japanese reading in Ondoku.

Voices corresponding to various uses, such as women's, men's, and children's voices, are available.

You can synthesize realistic, easy-to-hear audio as if recorded by professional voice actors or narrators.

Because Ondoku's voices are created with AI and are not based on specific individuals, they are also ideal for dubbing characters.

Foreign language support. Monetize globally on YouTube

Furthermore, Ondoku supports foreign languages, starting with English, Chinese, and Korean!

Foreign language reading is also extremely natural and can be utilized for multilingual content production on YouTube.

Since global expansion is possible with multilingual support, you can also produce content targeted at the world for monetization.

Simple terms of use make commercial use easy

Commercial use of Ondoku is very simple.

When using it for free, simply providing credit notation is OK.

If you use a paid plan, credit notation becomes unnecessary.

Complex license checks are unnecessary, and you can use it for commercial purposes with peace of mind.

It can be freely utilized for various commercial purposes, such as corporate use, product sales, and YouTube monetization.

For more details on commercial use, please also see this page!

Why not experience Ondoku for free?

As described, with the AI reading service Ondoku, anyone can easily synthesize speech without installation.

Since it can be used for free without registration or login, why not experience Ondoku for yourself first?

Why not create the work you imagine with AI reading software?

In this article, we explained the features, installation methods, and usage of COEIROINK in detail.

COEIROINK is excellent speech synthesis software that allows you to create videos using charming characters.

By using the MYCOEIROINK function, it is also possible to create original models with your own voice, and an active community is being formed.

However, there are aspects that may be difficult for beginners, such as the need to download large files and the requirement for a certain level of PC specifications.

When you want to start speech synthesis easily, Ondoku, which can be used immediately without installation, is also recommended.

Why not use the latest AI reading software to create your ideal creative works and videos?

■ AI voice synthesis software "Ondoku"

"Ondoku" is an online text-to-speech tool that can be used with no initial costs.

• Supports approximately 50 languages, including Japanese, English, Chinese, Korean, Spanish, French, and German
• Available from both PC and smartphone
• Suitable for business, education, entertainment, etc.
• No installation required, can be used immediately from your browser
• Supports reading from images

To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.