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Table 1 MPEG Audio Layer III versions [19]

From: New approach for determining the QoS of MP3-coded voice signals in IP networks

Version International standard Supported sampling rate frequencies
MPEG-1 Audio Layer III ISO/IEC 11172-3 (MPEG-1 Part 3) 32,000 Hz/44,100 Hz/48,000 Hz
MPEG-2 Audio Layer III ISO/IEC 13818-3 (MPEG-2 Part 3) 16,000 Hz/22,050 Hz/24,000 Hz
MPEG-2.5 Audio Layer III Nonstandard, proprietary 80,00 Hz/11,025 Hz/12,000 Hz