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ITU-T P.862 (2001) Cor. 2 (03/2018)

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本勘误处理P.862.2中主观得分系统性预测偏低问题。造成偏低预测值(0.8 MOS)的原因是由于暴露的音频信号与响度模型不匹配。此问题导致劣化被夸大,得出低于预期值的分数。 应更正附件A提供的P.862.2参考,以便将信号调至用于宽带评估的76 dB(SPL)目标水平: – pesqmain.c, line 421: float WB_InIIR_Hsos_8k[LINIIR] = { 0.251188 * 2.6657628f, 0.251188 * -5.3315255f, 0.251188 * 2.6657628f, -1.8890331f, 0.89487434f }; – pesqmain.c, line 424: float WB_InIIR_Hsos_16k[LINIIR] = { 0.251188 * 2.740826f, 0.251188 * -5.4816519f, 0.251188 * 2.740826f, -1.9444777f, 0.94597794f }; P.862.2更新后的一致性测试文件已纳入本勘误 (suppl23_wb.txt)。
Citation: https://handle.itu.int/11.1002/1000/13569
Series title:
Approval date: 2018-03-16
Approval process:AAP
Status: Superseded
Maintenance responsibility: ITU-T Study Group 12
Further details: Patent statement(s)
Development history