[Free] AI Apps for Phone Guidance! Call Center Efficiency Tips
July 22, 2026
When you call a phone desk or a call center, voice guidance often plays, doesn't it?
By using voice guidance, you can improve the efficiency of operations for call centers as well as corporations and shops.
In fact, with the latest AI, anyone can easily create automated voices for voice guidance!
Automated voices for voice guidance, which used to cost hundreds of thousands of yen, can now be created for free with the latest AI reading software and apps.
In this article, we will explain in detail how to implement telephone voice guidance, from specific steps to points of caution.
We will also introduce free AI software/apps and IVR systems (Automated Voice Response Systems).
From those who want to implement new telephone voice guidance to those who want to reduce call center operating costs, why not refer to this article and try making your own voice guidance audio?
[Free] Recommended AI Reading Apps for Implementing Telephone Voice Guidance
If you are implementing telephone voice guidance in a call center, Ondoku is recommended!
Ondoku is an AI app that allows you to create automated voices for voice guidance using the latest AI.
Anyone can easily synthesize clear, easy-to-hear audio that sounds like a professional narrator.
Since the voice is synthesized by AI, you can create voice guidance 24 hours a day, anytime.
Moreover, Ondoku is free!
Since commercial use is OK, you can feel secure when you want to create voice guidance for companies or organizations (Click here for details on commercial use).
If you want to implement telephone voice guidance in a call center, why not first experience the AI reading service Ondoku for free?
Create Telephone Voice Guidance for Free! The Flow of Creating Automated Voices with Ondoku
Now, let's introduce the flow of creating automated voices for telephone voice guidance for free!
Please use this as a reference when implementing telephone voice guidance.
1. Create the Script Text for Telephone Voice Guidance
First, create the script text.
The key point when writing the script text for telephone voice guidance is to prepare clear options so that customers can use them without getting lost.
We recommend narrowing the options down to about three or four.
If there are too many options, there is a high possibility that customers will hang up before listening to the end.
Example Script Text for Call Center Telephone Voice Guidance
Thank you for calling. This is the Customer Consultation Desk for XX Co., Ltd. Please press a number according to the voice guidance. Press 1 for consultations regarding new contracts, press 2 for changes to contract details, press 3 for consultations regarding cancellations, and press 4 for other inquiries.
We recommend a simple structure like this.
Example Script Text for Recording Calls in a Call Center
When recording calls with call center operators, we recommend informing them about the recording via voice guidance.
For example,
Please note that this call is being recorded to improve the quality of our customer service.
By providing guidance like this, you can give customers peace of mind and prevent trouble before it happens.
2. Create the Automated Voice for Telephone Voice Guidance with Ondoku
Once the script text for the telephone voice guidance is complete, read it aloud with Ondoku.
Open the top page of Ondoku.
Paste the script into the text box on the top page.
When reading the content of the telephone voice guidance, we recommend pasting and reading it for each individual announcement.
As an example this time, we will read the announcement that plays first when a customer calls.
Select the language and voice type.
Ondoku is multilingual, supporting over 48 languages.
In the case of Japanese, for example, you can choose from 16 types of voices, including female, male, and child voices.
You can listen to audio samples in this article.
Listen to 16 types of voices from the text-to-speech software Ondoku for free. Change impressions with pitch variations.
Ondoku has 16 types of Japanese voices. Of course, both male and female voices are available. We have made it possible to listen to 8 types of commonly used Japanese voices and voices where the pitch of each has been adjusted.
With Ondoku, you can also adjust the pitch and reading speed.
*When reading the content for telephone voice guidance, the default settings are fine.
Preparation is now complete.
Press "Read" to start creating the voice.
Reading is completed in just a few seconds.
The screen will switch and the audio will play.
Listen to the content and if there are no problems, press "Download" to save the file.
You have now succeeded in reading the telephone voice guidance content using Ondoku.
3. Implement the Reading File into the Voice Guidance
Once the audio file is complete, implement the audio file into the IVR system (Automated Voice Response System).
When you save the file from the "Download" displayed on the top page of Ondoku, an MP3 file will be downloaded.
Additionally, by opening the "History" page of Ondoku, it is also possible to download WAV files.
Many IVR systems (Automated Voice Response Systems) support loading MP3 and WAV files, so you can use the files saved from Ondoku as they are.
The flow for reading telephone voice guidance content with the AI reading app Ondoku is now complete.
Since you can easily create reading files for voice guidance for free like this, why not use the AI voice of Ondoku when implementing your voice guidance?
What are the Features & Benefits of Implementing Telephone Voice Guidance?
Telephone voice guidance offers many benefits.
From here, we will explain the basic characteristics of voice guidance and the benefits of implementing it.
What is Telephone Voice Guidance? Recommended for Inquiry Desks and Call Centers
Telephone voice guidance refers to a system that automatically provides voice guidance for calls made to the telephone desks or call centers of companies and organizations.
It is also called an IVR system (Automated Voice Response System) and is widely utilized in call centers and corporate reception desks.
When you implement telephone voice guidance, an automated voice announcement first plays when a customer calls.
When the customer presses a phone button according to the voice guidance, the call is transferred to the person in charge or the department.
Furthermore, systems have emerged that allow for procedures such as:
- Store or facility reservations
- Requests for courier redelivery
using only phone button operations.
As the shortage of call center operators becomes more serious, it is attracting more attention than ever as a system that can more efficiently respond to customer calls.
Benefits of Implementing Telephone Voice Guidance
The greatest benefit of implementing telephone voice guidance is that it can significantly improve call center operational efficiency.
By automating basic guidance and procedures with voice guidance, you can reduce the number of times call center operators need to respond.
Since call center operators can focus only on complex inquiries, you can improve response quality and increase customer satisfaction.
Reducing labor costs is also a key point.
Since it is no longer necessary to employ call center operators solely for phone responses, labor costs can be greatly suppressed.
Also, the ability to automatically handle calls outside of business hours or on holidays is a major benefit.
By utilizing AI text-to-speech software and apps, you can implement voice guidance for free.
For future implementations of telephone voice guidance, the AI reading app Ondoku is recommended.
Why Free AI Apps are Recommended for Implementing Telephone Voice Guidance
When implementing telephone voice guidance, we recommend using free AI reading apps and software.
With the AI reading app Ondoku, you can easily create reading voices for free.
Reading Voice is Important in Implementing Telephone Voice Guidance
Previously, when creating voices for voice guidance, it was common to request recordings from professional narrators.
Requesting recordings from narrators incurs significant costs for voice production.
Moreover, every time there was a change in business hours or an update to service details, additional recording costs were required.
But with AI text-to-speech software and apps, such worries are unnecessary!
By using a free AI text-to-speech app, anyone can generate natural voices just by entering text.
Since you can create natural voices like a professional narrator for free, all you need to do is implement the audio file into your IVR system (Automated Voice Response System).
Because it costs nothing and voices can be created immediately without waiting time, the hurdle for implementing telephone voice guidance has lowered significantly.
Furthermore, since free AI text-to-speech apps can be used 24 hours a day, you can respond even when sudden corrections to the content of the telephone voice guidance occur.
Easily Implement Voice Guidance with Cloud-based IVR Services
Recently, with the spread of cloud-based IVR services, it has become unnecessary to purchase dedicated telephone equipment.
There is no need to implement telephone equipment at a high cost, and since voice guidance can be created entirely on the cloud, initial costs are almost nonexistent.
With cloud-based IVR services, loading MP3 and WAV files is also easy, so you can immediately implement the audio files created with AI text-to-speech software and apps.
Telephone Voice Guidance Implementation Now Possible for SMEs and Sole Proprietors
By using AI reading voices and IVR services, telephone voice guidance can be implemented for free or at a low cost.
Voice guidance, which previously could only be achieved at call centers of large corporations, can now be implemented by small and medium-sized enterprises (SMEs) and sole proprietors as well.
By using free AI text-to-speech apps and software, you can create audio files for voice guidance just by entering text.
If you want to easily implement telephone voice guidance, AI text-to-speech apps and software are recommended.
Points to Check When Reviewing Telephone Voice Guidance Reading Voices
When you have created a reading voice for telephone voice guidance, we recommend actually listening to and checking the voice on the IVR system (Automated Voice Response System).
Here are the points for checking reading voices for call centers and telephone desks.
Check the Tempo and Timing of Pauses in the Telephone Voice Guidance
When you actually play the audio file on an IVR system (Automated Voice Response System), the impression of the speaking tempo and the timing of pauses may change compared to when you listened to the audio file on a PC.
- I want more space between sentences
- I want to increase the pause before the selection number
In such cases, all you need to do is correct the script text and regenerate the voice with the AI reading app.
With Ondoku, you can synthesize audio in just a few seconds, so you can immediately correct the voice guidance content.
How to correct the timing of pauses in audio with Ondoku is explained in this article.
Please take a look.
How to adjust pauses and blank time in Ondoku reading [2 types]
Among the needs of those who use Ondoku is "I want to open up the pauses a little more." If it is an adjustment of "pauses" to open them up slightly, there are two types of adjustment methods: 1. Punctuation, 2. SSML.
Check if the Telephone Voice Guidance Options are Easy to Understand
Whether the explanation of options is easy to understand is also an important point.
The ease of understanding can change significantly between when you check the script in text and when you actually hear it as audio.
We recommend having multiple people actually call the IVR system to check if they can operate it without getting lost.
Check if the IVR System (Automated Voice Response System) Settings are Correct
Check if the actions when buttons are pressed on the phone are correct.
- Is the wrong audio file set by mistake?
- Is it transferred to the call center operator without issue?
- Is the call transferred to the correct destination?
Confirm that the IVR system (Automated Voice Response System) settings are correct.
It is also key to have call center operators test it in advance and confirm if there are any issues.
In this way, when implementing telephone voice guidance, we recommend testing and checking the reading voice and IVR system (Automated Voice Response System) beforehand.
All problems found during the implementation test should be corrected before the start of operations.
With the free text-to-speech app Ondoku, you can generate new voices immediately, so you can easily correct the content of your telephone voice guidance.
When adding new content to an already implemented telephone voice guidance, we also recommend free reading with Ondoku.
Why not implement a more user-friendly telephone voice guidance with the free reading app Ondoku?
[Free] Ondoku: The Ideal AI Service for Implementing Telephone Voice Guidance
If you want to create reading voices for voice guidance for call centers or telephone desks, the AI reading app Ondoku is recommended!
Ondoku is an AI text-to-speech app that can be used for free.
You can easily create high-quality AI reading voices for free.
Create High-Quality AI Reading Voices for Free
The greatest feature of Ondoku is that it allows you to create high-quality AI voices for free!
Since the free plan allows for commercial use, it is ideal for call centers and corporate telephone desks (Click here for details on commercial use).
The ability to create easy-to-hear audio unique to the latest speech synthesis AI is also a key point.
Instead of the unnatural mechanical voices of the past, you can read aloud in clear, natural voices like a professional narrator.
Since the sound quality is clear and easy to hear even over the phone, you can implement user-friendly telephone voice guidance.
Select the Ideal Voice for Telephone Voice Guidance
With Ondoku, you can choose from a wide variety of AI reading voices, including female and male voices!
In the case of Japanese, you can select from over 16 types of voices.
You can listen to the voices in this article, so please take a look.
Listen to 16 types of voices from the text-to-speech software Ondoku for free. Change impressions with pitch variations.
Ondoku has 16 types of Japanese voices. Of course, both male and female voices are available. We have made it possible to listen to 8 types of commonly used Japanese voices and voices where the pitch of each has been adjusted.
Adjustments to voice speed and pitch are also possible, so you can create even clearer voices tailored to your customers.
Multilingual Support for Creating Voice Guidance for Foreigners
Ondoku is multilingual, supporting over 48 languages, including English, Chinese, Korean, Spanish, and French.
- Product repair/consultation call centers for foreigners
- Reservation systems for inbound tourists in the tourism and accommodation industry
- Call centers for local governments with many foreign residents
You can easily create voice guidance for foreign customers, such as the above.
Foreign language audio samples can be heard in this article, so please take a look.
[Ondoku] Listen to the types of voices and sample audio for supported languages
Here we will introduce the supported languages and sample voices for Ondoku.
Why Not Implement Telephone Voice Guidance with Ondoku?
In this way, with the AI reading app Ondoku, you can easily produce the ideal AI reading voice for telephone voice guidance!
When you want to implement telephone voice guidance, we recommend first experiencing the AI reading voice of Ondoku for free.
Why not create clear telephone voice guidance with the latest AI reading app Ondoku?
Common Failures & Countermeasures in Implementing Telephone Voice Guidance
Here we explain common failures and countermeasure methods when implementing voice guidance at call centers or telephone desks.
Too Many Voice Guidance Options Causing Customer Confusion
A common failure in telephone voice guidance is setting too many options.
Press 1 for products, 2 for repairs, 3 for shipping, 4 for returns, 5 for cancellations, 6 for other inquiries...
Listing many options like this makes it difficult for customers to know which one to choose.
Also, if the customer has not contracted for an all-you-can-call plan or is using a Navi-Dial, call charges will apply, making listening to long voice guidance a major stress.
To prevent this, we recommend narrowing down the options in the initial response voice to just three or four.
If you absolutely must have many options, we recommend narrowing them down step-by-step.
First, sort by broad categories, then present more detailed options.
However, even in that case, caution is needed not to make the hierarchy too deep.
When creating audio with free text-to-speech software or apps, we recommend paying attention to the number of options, the content, and the depth of the hierarchy.
Audio is Hard to Hear and Causes the Call to be Terminated
If the sound quality or speed of the voice guidance is not appropriate, customers may hang up mid-call.
What is important for creating clear voice guidance is using the latest AI services capable of reading with high-quality audio.
With the free AI reading service Ondoku, you can read aloud in clear voices like a professional narrator.
Settings for the text-to-speech app are also important.
If the voice speed is too fast, the customer will proceed to the next guidance before understanding the content.
Conversely, if it is too slow, it will cause stress to the customer.
When making a voice with Ondoku, the default settings are fine, but if you feel the voice is too fast, it is possible to lower the reading speed.
Failure to Update After Implementation Results in Outdated Content
When implementing telephone voice guidance, updates after implementation are also important.
For example, if business hours have changed but the voice guidance content remains old, incorrect information will be conveyed to the customer.
Corrections to voice guidance are also necessary when the department in charge or service details change.
To easily update telephone voice guidance, AI reading apps and software are recommended.
Since all you need to do is correct the script text and read it aloud, you can respond immediately when corrections are necessary.
AI reading apps and software are also recommended for updating content that has already been implemented but has become outdated.
Free AI Reading Apps are Recommended for Telephone Voice Guidance
With the evolution of AI speech synthesis technology, anyone can now easily implement telephone voice guidance.
By utilizing AI text-to-speech software, you can create high-quality audio for voice guidance for free.
SMEs and sole proprietors can also implement user-friendly telephone voice guidance.
If you are implementing telephone voice guidance, creating audio files with the AI reading app Ondoku is recommended.
Why don't you also first experience free reading with Ondoku?
■ 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
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