LEADTOOLS includes Adaptive Multi-Rate (AMR) audio encoders and decoders for DirectShow and Media Foundation. These codecs compress and decompress audio data using the AMR standard.
Adaptive Multi-Rate compression is optimized to encode and decode speech audio and was adopted by 3GPP in 1998. It is now widely used within GSM (Global System for Mobile Communications) and UMTS (Universal Mobile Telecommunications System). The codec supports background noise cancellation, multiple source rates that adapt on the fly, and error concealment, making the AMR codec ideal for video conferencing and Voice Over IP (VOIP) applications.
Overview of LEADTOOLS AAC Audio Codec Technology
- Full support for encoding, decoding, and transcoding AMR-compressed audio data adhering to ISO/IEC 13818-7 standard
Optimized for speech coding
- Eight source rates from 4.75kbps to 12.2 kbps
- Voice activity detector
- Low-rate background noise encoding mode
- Adaptive bit rate switching
- Error concealment mechanism for transmission errors and lost packets
- Ideal choice for streaming, video conferencing, and voice over IP (VOIP) applications
- Includes .NET (C# & VB) and C DLL libraries for 32 and 64-bit development