LEADTOOLS Filters Help
| LEADTOOLS Filters Help > Filters, Codecs and Interfaces > Audio Codecs > AMR Encoder > LEAD AMR Encoder |
Also known as compressor, this is a module or algorithm to compress data. Playing that data back requires a decompressor, or decoder.
A COmpressor combined with a DECompressor, or encoder and a decoder, which allows you to both compress and decompress that same data.
The LEAD AMR Encoder is a DirectShow® filter for compressing audio data using the 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.
Technical details for the filter are provided in the following table:
|
Filter Interfaces |
|
Interface ID |
IID_ILMAMREncoder |
|
Input Media Types |
Type: |
|
Output Media Types |
Type: |
|
Filter CLSID |
CLSID_LMAMREncoder |
|
Property Page CLSID |
CLSID_LMAMREncoderPropertyPage |
|
Executable |
LEncAMR.dll, DSKernel2.dll |
|
Filter category |
CLSID_AudioCompressorCategory |
|
Header |
ILEncAMR.h |
Note: Media types are defined in the LGUIDs.h header file.
Win32, x64
LEAD AMR Encoder User Interface
