Advanced Audio Coding (AAC), also known as MPEG-2 Part 7, is a digital audio encoding and lossy compression format. AAC delivers high quality audio at a lower bitrate compared to other audio encoding standards like ISO/MPEG Audio Layer-3 or MP3.
The LEAD AAC Audio Encoder and Decoder are DirectShow® filters for compressing and decompressing audio data using the AAC compression standard (ISO/IEC 13818-7).
Overview of LEAD AAC Audio Codec Technology
- Supports both variable and constant bitrates.
- Output channels selection.
- Surround feature.
- Supports both versions of AAC, MPEG-4 and MPEG-2.
- Supports different profiles; Low Complexity profile, Main profile, and Long Term Prediction profile.
- Supports 2 stream formats; Raw and ADTS.
- Output sample frequency selection.
- Cut-off frequency option.
- Force stereo output option in the decoder.
- 32 and 64 bit binaries.
AAC Compared to MPEG-1 Layer 2
MPEG-4 AAC is the most powerful audio codec available today. The near CD quality MPEG-1 Layer 2 audio codec used widely in digital video applications delivers high-quality stereo at 128kbit/s/channel while MPEG-4 AAC offers the same quality at 64kb/s/channel.
LEADTOOLS SDK Products that Include the LEAD AAC Audio Codec
See the LEADTOOLS Multimedia Products comparison chart.
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