This software allows recording and playback of audio on web pages through a user-friendly GUI. It features HTTP POST for uploading recordings to a web server, voice compression at low bitrates, and customizable appearance. It can be managed through applet parameters or JavaScript.

Voice compression is also an option with bitrates as low as 5 kbps. This feature is ideal for web designers who want to compress their audio files without losing sound quality. On the client side, a Java applet runs within a web browser and provides both recording and playback functionality. The Applet is developed in Java1.1 and can be customized to match the look and feel of individual websites.
The Applet can be controlled by JavaScript, which is useful if you want to create a bespoke GUI. ListenUp also supports Speex compression, varying from 10:1 to 28:1 as well as ADPCM 4:1 compression. It supports ulaw compression, which is commonly used in telephony.
A unique drag-and-drop feature allows users to upload their files to the server. Once uploaded, a script handles the files and determines how they are used on the server. This script can be written using PHP, JSP, ASP, or another language of choice. The server can handle uploaded files using the same technology as HTML FORMs and messages are uploaded to the server using standard multi-part MIME format and HTTP POST.
Optional text fields such as usernames and comments can be uploaded along with the WAV file. Additionally, ListenUp offers dynamic range, compression, noise gate, and silence trim.
The software is reliable, easy to use, and highly customizable. Extensive documentation and tutorials are included to ensure users can easily maximize its capabilities. ListenUp can be used for various applications, including voice message forums, voice annotation for a database, language training and testing, and online development of presentations.
In conclusion, ListenUp is an exceptional tool for anyone looking to record and upload sound to a web server with ease. With its range of features and customization options, ListenUp is a highly recommended software solution for any user who requires high-quality audio uploads on their website.
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