Convert M4R to AAC

The M4R file extension stands for MPEG-4 Ringtone and is primarily used for creating custom ringtones for Apple devices, particularly iPhones. This format, a variant of the standard MPEG-4 Audio (M4A), emerged alongside the introduction of the iPhone in 2007. M4R files utilize Advanced Audio Coding (AAC) for compression, ensuring high-quality sound in a compact file size. Their use is strictly tied to Apple's ecosystem, allowing users to personalize their device's ringtones through the iTunes platform. M4R's history is closely linked to the evolution of mobile technology and the personalization trend in smartphone usage.

Advanced Audio Coding (AAC) is a digital audio file format designed to provide superior sound quality and compression efficiency compared to older formats like MP3. Developed in the late 1990s by a consortium of companies, including Fraunhofer IIS, Dolby, and Sony, AAC has become the standard audio format for various platforms, including Apple's iTunes and YouTube. It is widely used in streaming, broadcasting, and multimedia applications due to its ability to deliver high-fidelity audio at lower bit rates, making it ideal for bandwidth-constrained environments.