The .tts file extension is commonly associated with text-to-speech (TTS) voice files. These files typically contain pre-recorded audio generated from text using a text-to-speech engine. The specific format and encoding within a .tts file can vary depending on the software or system that created it. Often, these files are used in applications where dynamic voice output is required, such as accessibility tools, navigation systems, e-learning platforms, and interactive voice response (IVR) systems. The audio data within the .tts file represents the spoken words, phrases, or sentences that were originally inputted as text. The quality and naturalness of the voice depend heavily on the TTS engine used to generate the audio. These files are often smaller than recordings of actual human speech, making them suitable for applications where storage space or bandwidth is limited. The use of .tts files allows developers to integrate speech output into their applications without the need for human voice actors or extensive audio recording sessions. The file can be played back using various audio players or integrated directly into the application that generated it.