Examples of credit notation when using Ondoku for listening tests at educational institutions such as public schools and school corporations, explained with images
Jan. 26, 2026
With Ondoku, you can easily prepare for various listening tests, such as English and Chinese, for free.


Many teachers worry about credit notation and usage rules when using Ondoku. Here, we will provide a detailed explanation.
Rules for Using Ondoku
Ondoku can be used by educational institutions such as:
- Public schools
- Educational corporations
These institutions are exempt from several prohibited items.
- Using for listening tests for free
- Using for daily classes for free
And so on—as long as you provide credit notation, you can use Ondoku's audio for free.
Please note that cram schools, private tutors, and school teaching materials are not included in educational institutions. Please use the service according to the standard commercial use rules.
Prohibited Items Exempted for Educational Institutions
- Acts such as embedding or using in products without a Business Plan.
- Distributing materials where Ondoku's audio is the main content.
Since these two items are exempt, storage and distribution on CDs and USB memory sticks are possible.
How Exactly Should I Provide the Credit Notation?
【When Using for Daily Classes or Exams】
Example:
- Playing listening audio in a school class
- Using as listening audio in a school final exam

【Usage in school classes】
For free use, please include credit notation on the handouts used during the lesson, or introduce the service by saying "I used Ondoku" during the class.
For paid members, credit notation is not required. If possible, we ask for your cooperation in providing credit notation so that students can study on their own.
【Usage only for the actual exam】
For free use only during the actual exam, it can be used with credit notation on any one of the following: the question paper, answer sheet, or model answers.
When a paid member uses it only for the actual exam, credit notation is not mandatory, but if possible, we ask for your cooperation in providing credit notation on the question paper, answer sheet, or model answers so that students can study on their own.
【For CD Distribution and Storage】
Example:
- Storing on a CD at school
- Distributing final exam audio to students on CD for free

Regardless of free or paid use, credit notation on the CD is required. Handwriting or permanent markers are fine.
If you do not wish to provide credit notation, please subscribe to the Business Plan.
【Usage only for the actual exam】
For free use only during the actual exam, notation on the CD is not required, and it can be used with credit notation on any one of the following: the question paper, answer sheet, or model answers.
When a paid member uses it only for the actual exam, notation on the CD is not required. If possible, we ask for your cooperation in providing credit notation on the question paper, answer sheet, or model answers so that students can study on their own.
【In the case of paid distribution】
A Business Plan contract is required. In that case, credit notation is not required.
【For USB Memory Stick Distribution and Storage】
Example:
- Storing on a USB memory stick at school
- Distributing audio for study or final exams to students on a USB memory stick for free

Regardless of free or paid use, credit notation is required. Handwriting or permanent markers are fine.
If you do not wish to provide credit notation, please subscribe to the Business Plan.
【Usage only for the actual exam】
For free use only during the actual exam, notation on the USB memory stick is not required, and it can be used with credit notation on any one of the following: the question paper, answer sheet, or model answers.
When a paid member uses it only for the actual exam, notation on the USB memory stick is not required. If possible, we ask for your cooperation in providing credit notation on the question paper, answer sheet, or model answers so that students can study on their own.
【In the case of paid distribution】
A Business Plan contract is required. In that case, credit notation is not required.
【For Email Distribution】
Example:
- Distributing audio for study or final exams to students via email for free

Regardless of free or paid use, credit notation is required.
If you do not wish to provide credit notation, please subscribe to the Business Plan.
【In the case of paid distribution】
A Business Plan contract is required. In that case, credit notation is not required.
Make Listening Tests Easier and Simpler with Ondoku!
By using Ondoku, creating audio for listening tests, which used to be very difficult, becomes truly easy.
[Must-see for Teachers] Create English listening questions for free! A thorough explanation of how to do it without recording. | Text-to-speech software Ondoku
For teachers struggling with listening tests, there is an incredibly easy way to create listening test audio that you should try. No recording, no microphones, and no troublesome sessions are needed. It's free and easy to try, so please take advantage of it! We will introduce the details here.
For English learning and listening! Listen to native pronunciations from 67 speakers—female, male, girl, and boy voices! | Text-to-speech software Ondoku
Ondoku is a text-to-speech service that can pronounce languages from all over the world. You can listen to samples of Ondoku's 67 types of English voices.
Please use Ondoku for your listening test audio to reduce your workload as much as possible.
Wishing you an enjoyable teaching life!
■ 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.
Email: ondoku3.com@gmail.com
"Ondoku" is a Text-to-Speech service that anyone can use for free without installation. If you register for free, you can get up to 5000 characters for free each month. Register now for free