Convert AMR to AAC

Adaptive Multi-Rate Codec (AMR) is a file extension used primarily in voice applications, including VoIP, audio messaging, and mobile phone telephony. Originating from the European Telecommunications Standards Institute (ETSI) in 1999, AMR files enable efficient compression and transmission of speech audio. The codec dynamically adjusts bit rates during transmission to optimize audio quality and network capacity. Its efficient bandwidth utilization and compatibility with various communication standards have made AMR a preferred choice for many modern communication systems.

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.