What is MIME type "audio/vnd.nuera.ecelp7470"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

audio/vnd.nuera.ecelp7470 is a CELP‐based audio format. It encodes speech using a specialized compression algorithm developed by Nuera. This codec optimizes voice quality in low-bandwidth situations by stripping unnecessary data while keeping speech clear.

It is mainly used in applications that require efficient voice transmission. For example, files using this format carry the ECELP7470 extension.

For more technical details, visit the IANA Media Types page.

Associated file extensions

.ecelp7470

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: audio/vnd.nuera.ecelp7470

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="audio/vnd.nuera.ecelp7470">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'audio/vnd.nuera.ecelp7470');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.ecelp7470

FAQs

Does audio/vnd.nuera.ecelp7470 work in modern web browsers?

No, standard web browsers like Chrome, Firefox, and Safari do not natively support this MIME type. It is a proprietary format used for specific VoIP and telephony hardware. To play audio on a website, you should convert the file to a standard format like audio/mpeg or audio/wav.

How do I open an .ecelp7470 file on my computer?

You generally cannot open these files with standard media players like Windows Media Player or VLC unless a specific plugin is installed. These files are typically decoded by specialized Nuera hardware or telephony software. For playback on a PC, the file usually requires conversion using professional audio engineering tools that support the Nuera codec.

Is audio/vnd.nuera.ecelp7470 suitable for music streaming?

No, this format is based on CELP (Code-Excited Linear Prediction), which is highly optimized for human speech compression. While it creates very small file sizes for voice, it will produce poor quality if used for music or complex audio. For music, formats like audio/aac or MP3 are preferred.

How do I configure Apache to serve files with the extension .ecelp7470?

You can add the MIME type to your Apache configuration or .htaccess file to ensure the correct headers are sent. Add the following line: AddType audio/vnd.nuera.ecelp7470 .ecelp7470. This tells the server to identify the file correctly to the client.

How do I add support for this MIME type in Nginx?

In your Nginx mime.types file or inside a specific types block in your server configuration, add the following entry: audio/vnd.nuera.ecelp7470 ecelp7470;. Reload Nginx afterwards to apply the changes.

What does the vnd.nuera prefix mean in this MIME type?

The vnd prefix indicates that this is a vendor-specific MIME type, and nuera refers to Nuera Communications (the developer of the format). This distinction separates it from standard types defined by the IETF, signaling that the format may require proprietary software to function.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.