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 AMR 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

Technology Related to AMR Audio Codec

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Documentation Links for AMR Audio Codec

LEADTOOLS SDK Products that Include AMR Audio Codec

LEADTOOLS Multimedia Suite v20

The LEADTOOLS Multimedia Suite SDK is a comprehensive collection of multimedia development technology that provides developers with everything they need to create enterprise-level multimedia applications for a wide variety of industries, including defense, broadcast, security, and more. By bundling features from the Multimedia SDK, DVD Module, Streaming Module, MPEG-2 Transport Module, Imaging Pro SDK, and Distributed Computing SDK, Multimedia Suite offers a tremendous value for the world-class technology it provides.

LEADTOOLS Streaming Module v20

The LEADTOOLS Streaming Module is perfect for developers who need to stream audio and video over the Internet or corporate networks for a wide variety of applications. This module adds on to the LEADTOOLS Multimedia SDK and includes the Media Streaming Server, a high-level framework for implementing professional multimedia streaming servers that can stream any file to any device. The Streaming Module also provides a programmer-friendly set of peer-to-peer tools for creating video conferencing and security/surveillance applications. In addition to the SDK features, the Streaming Module bundles together several of LEAD's world-class audio and video codecs that will lower costs and improve user experience through reduced bandwidth requirements and high-quality playback.

NOTE: LEADTOOLS Audio Codecs are very diverse and cover the gamut of multimedia features and technologies. Many codecs are included with the base SDK products above, while some can be added á, la carte or bundled together with various add-on modules. See the Multimedia Product Comparison Chart for more details on how to obtain each audio codec.