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[MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType, ArraySubType=0, SizeParamIndex=0, SizeConst=0, IidParameterIndex=0, SafeArraySubType=0)]public const string Filter_AMR_Encoder
[MarshalAsAttribute(UnmanagedType.U1 |UnmanagedType.LPStr)]public:const String^ Filter_AMR_Encoder
The LEAD AMR Encoder is a DirectShow filter for compressing audio data using AMR speech compression. The AMR speech coder consists of a 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.
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