LEAD AMR Codec
Included in LEAD H.263 Codec

Are you a software developer looking for multimedia tools to create your own video conference, webcast, or security application? LEAD offers a complete line of Multimedia SDKs with H.264 compression, MPEG-2, AMR and more. Click here to visit the LEADTOOLS developer website.

The LEAD AMR Codec (included in the LEAD H.263 Codec) is a DirectShow filter for compressing audio data using AMR speech compression. The AMR speech coder consists of the multi-rate speech coder, a source controlled rate scheme including a voice activity detector and a comfort noise generation system, and an error concealment mechanism to combat the effects of transmission errors and lost packets.

The multi-rate speech coder is a single integrated speech codec with eight source rates from 4.75 kbps to 12.2 kbps, and a low rate background noise encoding mode. The speech coder is capable of switching its bit-rate every 20 ms speech frame upon command. These features make LEAD AMR the preferred audio compression for streaming and video conferencing.

More about AMR

Adaptive Multi-Rate (AMR) is an audio data compression scheme optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1998.