Audio to Text Converter

This project allows you to upload an audio file or record audio and convert it into text using AssemblyAI's API. You can also translate the transcribed text to different languages using Google Cloud Translation API.

Prerequisites

Before running the application, ensure the following prerequisites are met:

• Java: JDK 8 or later installed.
• Maven: Installed and set up to handle project dependencies.
• AssemblyAI API Key: For transcription services.
• Google Cloud Account: For language translation services.

Set AssemblyAI API Key in Environment Variable

1. Create an account at AssemblyAI if you don't already have one.
2. Obtain your API Key from the AssemblyAI dashboard.
3. Set the API Key as an environment variable:
   • On Windows:
     1. Open Command Prompt (cmd).
     2. Run the following command:

        setx API_KEY "your-assemblyai-api-key"

   • On macOS/Linux:
     1. Open a terminal window.
     2. Add the following line to your .bashrc or .zshrc file:

        export API_KEY="your-assemblyai-api-key"

     3. Then, run the following command to load the new environment variable:

        source ~/.bashrc  # or ~/.zshrc for zsh users

This environment variable will be used by the application to authenticate and interact with the AssemblyAI API.

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Setting Up Google Cloud Account

1. Create a Google Cloud Account

• Visit Google Cloud and sign up for an account if you don't have one.
• You may need to enter billing information, but there is a free tier with limited usage.

2. Create a New Project

• After signing in to Google Cloud Console, click on Select a Project at the top.
• Click New Project and enter a name for your project (e.g., audio-to-text-converter).
• Click Create.

3. Enable Google Cloud Translation API

• Go to the Google Cloud Console.
• In the search bar, type Translation API and select it.
• Click Enable to activate the Google Cloud Translation API for your project.

4. Create a Service Account

• In the Google Cloud Console, navigate to IAM & Admin → Service Accounts.
• Click on Create Service Account.
• Fill out the Service Account Details:
  • Service Account Name: translation-service-account
  • Role: Select Project → Editor or Viewer. The Editor role allows full access to the project, while Viewer gives only read access (choose based on your needs).
  • Leave the Key section as JSON (this is important for authentication).
• Click Done.

5. Download the Service Account Key in JSON Format

• After creating the service account, you'll be presented with the option to download the service account key. Click Create Key and select JSON.
• Save the downloaded .json file securely on your machine.

6. Set the Environment Variable for Authentication

• The downloaded .json file is required for authenticating your application with Google Cloud services.
• Set the GOOGLE_APPLICATION_CREDENTIALS environment variable to the path of the JSON file.
  • On Windows:
    1. Open Command Prompt (cmd) and run the following command:

       setx GOOGLE_APPLICATION_CREDENTIALS "C:\path\to\your\service-account-file.json"

  • On macOS/Linux:
    1. Open a terminal window and run the following command:

       export GOOGLE_APPLICATION_CREDENTIALS="/path/to/your/service-account-file.json"

    2. To make this change permanent, add the above line to your .bashrc or .zshrc file, and then run:

       source ~/.bashrc  # or ~/.zshrc for zsh users

This environment variable tells the application where to find the service account credentials needed for authentication with Google Cloud APIs.

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Running the Application

1. Clone the repository to your local machine:

   git clone https://github.com/your-repository/audio-to-text-converter.git
   cd audio-to-text-converter