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详细介绍了MPEG-4音频编码标准,对其内部就不同码率和质量要求所提供的3种编码技术即参数编码、CELP编码和时频编码进行了分析和比较。
The MPEG-4 audio coding standard is introduced in detail, and its coding, CELP coding and time-frequency coding are analyzed and compared to the three coding techniques provided by different code rates and quality requirements.