Tatvik’s MPEG-4 BSAC (Bit Sliced Arithmetic Coding) Audio Decoder implementation is one of the fast fixed-point implementations for Mobile Platforms. The implementation is efficient in terms of low MIPS and small memory footprint. Tatvik’s BSAC Audio Decoder can be easily integrated in T-DMB solution.
Specifications
| Profile | MPEG-4 BSAC (T-DMB Compliant) | Options Tools | • Intensity Stereo
• Mid/side Stereo
• Temporal Noise Shaping (TNS)
• Perceptual Noise Substitution (PNS) |
| Sampling rates | 8-48 KHz | Channels | Mono/Stereo |
| Bit Rate | Any (Compliant with Standard) | Output | 16 Bit PCM |
| Processors | ARM9, ARM11
ARM Cortex A8,A9,A7,A15
Intel x86, x64 | OS | iOS
Android
Windows (Phone) 7/8
Embedded Linux
Windows, Linux, MAC |
| Compliance | ISO/IEC 14496-4, ISO/IEC 14496-3:2005 | | |
Performance
Tatvik BSAC Audio Decoder implementation has been ported to varios platforms. The detailed benchmark results on ARM Simulator (ARMulator) are shown in the table below:
| Sequence Type | MCycles/sec on Nokia N93 (ARM11, 330 MHz) |
| Stereo_48KHz_57Kbps | 32.4 |
| Mono_48KHz_32Kbps | 25.9 |