How to Transcribe Audio Files for Free in 2025

What does "transcription" of a recording mean? How is it different from audio transcription?

For those with such questions, we will clearly explain audio transcription of sound files.

When you want to use recorded audio from interviews, meetings, or court proceedings as text, the crucial process is "transcription."

• Differences between transcription and audio transcription
• Key points of transcription
• Free transcription methods

This article will cover everything from the basics to practical applications of audio transcription!

While audio transcription previously required hiring professional services, it can now be done for free using AI.

If you're struggling with audio transcription, why not try smart audio-to-text conversion using the recommended services and apps introduced in this article?

Free AI Services & Web Apps Recommended for Audio Transcription

For transcribing audio files, "Mojiokoshi-san" is highly recommended!

"Mojiokoshi-san" is a free service that uses cutting-edge speech recognition AI to convert audio, video, images, and PDFs into text.

As a web app, it can be used instantly and for free on any device: PC, smartphone, or tablet!

It can accurately convert long audio files into text in just 10 minutes, so it's perfect for:

• Those who need immediate transcription after recording audio
• Those with a large volume of untranscribed audio data
• Those concerned about the cost of outsourcing long transcriptions to professionals

It solves all your business challenges related to audio transcription and voice transcription!

You can get transcriptions done faster and at a lower cost than hiring a professional service.

You can transcribe up to 3 minutes of audio without registration or login, so why not experience "Mojiokoshi-san"'s audio transcription from this page?

What is Transcription? Explaining the Basics and Key Points of Audio Transcription

How are audio transcription and voice translation different from regular transcription?

First, let's briefly explain what transcription means and its key points.

The Original Meaning of Transcription: A Term Older Than Recorded Audio

Transcription refers to the process of writing down recorded audio as text.

However, its original meaning was different.

The original meaning of transcription was to rewrite shorthand notes into a human-readable text format.

Shorthand is a technique for recording the content of parliamentary sessions, local assemblies, court proceedings, and meetings using specialized symbols called shorthand characters.

Since shorthand symbols are not readable on their own, they needed to be "transcribed" later into regular text.

Later, with the advent of audio recording, the term evolved to include converting spoken words into written form.

As the technology for recording voices advanced and the use of shorthand decreased, transcribing from audio came to be called "hanyaku."

Since it involves transcribing from recorded audio, it is also sometimes referred to as "rokuon hanyaku" (recorded transcription) or "onsei hanyaku" (audio transcription).

What's the Difference Between "Hanyaku" and "Mojiokoshi," "Tape Okoshi," or "Kakiokoshi"?

While "hanyaku" previously referred to transcribing from shorthand, nowadays:

• Hanyaku (transcription)
• Mojiokoshi (text conversion)
• Tape Okoshi (tape transcription)
• Kakiokoshi (written transcription)

are used with the same meaning.

Especially today, the process of converting recorded audio into text is often called "mojiokoshi" (text conversion).

However, administrative agencies still use the term "hanyaku."

The "hanyaku-sho" (transcription document) used in court is one such example.

What is a Hanyaku-sho? Characteristics of Recorded Audio Transcriptions Used in Court

A term similar to "hanyaku" is "hanyaku-sho."

A hanyaku-sho is a document that transcribes recorded audio, used as evidence in court.

A hanyaku-sho used as court evidence must be transcribed in a prescribed format.

What is particularly important is that the content of the recorded audio is transcribed exactly as is, without any changes.

If only parts of the recorded audio content are extracted or edited, it will not be accepted as court evidence.

For a hanyaku-sho for court, it is recommended to transcribe the recorded audio using the "su-okoshi" (verbatim transcription) method.

What are the 3 Forms Used in Hanyaku (Text Conversion, Tape Transcription, Written Transcription)?

There are broadly three types of methods for converting audio to text in recorded transcription.

Su-okoshi (Verbatim Transcription): Transcribing Recorded Audio Exactly as Is

Su-okoshi refers to transcribing audio recorded with an IC recorder or smartphone app exactly as is, without changing a single word.

For example, meaningless words (fillers) like "uh," "um," and "er" are not omitted but transcribed as text.

Since su-okoshi minimizes the transcriber's subjectivity, it is used in situations where accuracy is required, such as court hanyaku-sho documents.

It is also used in recorded transcription for purposes where recording subtle nuances is important, such as counseling, as it can capture atmosphere and emotion.

For Verbatim Recorded Transcription, Free AI Transcription Services/Apps are Recommended

If you want to transcribe audio verbatim, free AI transcription services are recommended.

AI transcription services (transcription apps) use speech recognition AI to transcribe recorded audio.

Since they process recorded audio automatically, you can transcribe content without missing anything.

By using a web app like "Mojiokoshi-san" that can transcribe in just 10 minutes, you can get audio transcribed much faster than by hiring a professional service.

Since it's free to use, why not try "Mojiokoshi-san" first?

※However, if you plan to use it as a public document like a court hanyaku-sho, don't forget to have it checked by a professional.

Kebatori (Edited Transcription): Removing Only Unnecessary Parts from Audio for Recorded Transcription

Kebatori refers to transcribing recorded audio by removing meaningless parts like "uh," "um," and "er" when converting audio to text.

It also involves correcting parts where the speaker made a mistake, but it does not correct:

• Speech style: mixing formal and informal tones
• Speaking order: inverted sentences, or sentences that are...
題が混ざっている
• 語尾：「〜ね」「〜よ」がついている

このような部分はそのまま文章にするため、会議やインタビューの雰囲気を保ったまま文字起こしすることができます。

読みやすさと内容の正確性のバランスが取れているので、会議の議事録、インタビューや座談会の録音音声を反訳するときに多く使われます。

整文：読みやすさを重視して音声を録音反訳

整文とは、内容の正確性を保ったまま、読みやすい形に文章に手を加えて反訳（文字起こし）することです。

ケバ取りで反訳（文字起こし）した文章をさらに手直しして、

• 話し言葉の語尾を書き言葉に
• 倒置法になっている文章や、話題の順番を入れ替え
• 内容の明らかな誤りを訂正

このように、文章として読みやすい形式に修正します。

録音音声の内容を出版物や資料として用いるときに多く使われる形式です。

【無料あり】ケバ取り・整文の録音反訳もAIサービス・アプリがおすすめ

ケバ取りや整文で反訳するときも、AI文字起こしサービス（文字起こしアプリ）がおすすめ。

これまでの録音反訳は専門業者に依頼する必要がありましたが、長い納期と高額な料金が必要でした。

AI文字起こしサービスを使えば、長い録音音声でもわずか10分でテキスト化。

あとはかんたんに手直しするだけで、専門業者に依頼するよりもずっと早くケバ取り・整文で反訳できます。

しかも『Mr. Transcription』のように無料で使えるウェブアプリもあるので、AI音声認識の性能をいますぐ体験することができますよ。

ケバ取りや整文で反訳するときも、AI文字起こしサービスをまずは無料で使ってみませんか？

おすすめの無料AI反訳サービス『Mr. Transcription』

録音した音声を反訳するなら『Mr. Transcription』がおすすめ！

『Mr. Transcription』は最新の音声認識AIで録音反訳できるAI文字起こしサービス。

仕事に使える高精度なAI文字起こしアプリを探している方に最適です。

高性能音声認識AIで, 専門用語が多い音声や音質が悪い音声も高精度にテキスト化。

長い音声でもわずか10分で文字起こしできるので、専門業者よりもずっと早く反訳できます。

ウェブアプリなので、こちらからトップページを開くだけで、誰でもいますぐかんたんに使えるのもポイントです。

しかも『Mr. Transcription』は無料。

登録・ログイン不要で3分間までのファイルを無料文字起こしできるので、録音反訳の方法で迷ったときは、まずは『Mr. Transcription』を体験してみませんか？

録音音声を無料反訳するには？AI文字起こしサービス・アプリの使い方を解説

AI文字起こしサービスで録音音声を反訳する方法を教えて！

ここからは、無料AI文字起こしサービス（ウェブアプリ）『文字起こし

using Mojiokoshi-san.

1. Prepare the Audio Recording for Transcription

First, you need to prepare the audio file you want to transcribe.

When recording audio with an IC recorder or a smartphone app, pay attention to two key points to ensure good sound quality and avoid issues:

Use a Dedicated Stand for Recording Devices

When recording meetings or interviews, it's recommended to use a dedicated stand for your recording device instead of placing it on the same table where people are sitting.

If you place the recording device on the table, the microphone might pick up sounds of hands resting on the table or vibrations from typing on a keyboard, which can degrade the sound quality.

Enable Airplane Mode When Recording with a Smartphone

If you're using a smartphone app for audio recording instead of a dedicated device, don't forget to set it to airplane mode.

If you don't enable airplane mode, the recording might be interrupted if you receive a phone call.

Also, turn off app notifications.

2. Upload the Audio File to Mojiokoshi-san

Once you have your audio recording ready, upload the audio file to Mojiokoshi-san.

Click here to open the Mojiokoshi-san top page.

Click "Select" to choose your audio file.

You can upload from your smartphone as well, so you don't need to copy audio recorded with an app to your PC for transcription.

With Mojiokoshi-san, you can transcribe audio files up to 3 minutes for free!

The file is now selected.

Click "Upload" to start the upload.

It will display "Uploading..." like this.

Once the upload is complete, the transcription process will begin.

It will display "Transcribing..." like this.

*If using the free version, wait with the screen open. The process usually finishes in about 10 seconds!

3. Transcription Complete! Easy and Free Audio Transcription

Once the transcription is complete, the screen will automatically switch, and the transcription results will be displayed.

Mojiokoshi-san is a feature-rich web app.

Amazingly, you can use the following features for free:

• Subtitle creation function
• Summarization function
• Meeting minutes creation function
• Content analysis function
• Q&A function

It doesn't just convert audio to text; it also automatically organizes it into a usable format, making it valuable for various situations such as meetings, interviews, and video editing.

First, try the AI web app Mojiokoshi-san!

■ AI transcription service "Mr. Transscription"

"Mr. Transcription" is an online transcription tool that can be used from zero initial cost and 1,000 yen per month (* free version available).

• Supports more than 20 file formats such as audio, video, and images
• Can be used from both PC and smartphone
• Supports technical terms such as medical care, IT, and long-term care
• Supports creation of subtitle files and speaker separation
• Supports transcription in approximately 100 languages ​​including English, Chinese, Japanese, Korean, German, French, Italian, etc.

To use it, just upload the audio file from the site. Transcription text is available in seconds to tens of minutes.
You can use it for free if you transcribe it for up to 10 minutes, so please try it once.

It is "Mr. Transcription" who can easily transcribe from audio, video, and images. Transcription allows you to transcribe for up to 10 minutes for free. You can copy, download, search, delete, etc. the transcribed text. You can also create subtitle files, which is ideal for transcription of interview videos.

HP: mojiokoshi3.com
Email: mojiokoshi3.com@gmail.com