LEAD AAC Audio Codec

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.