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Returns true if standard configuration represented by channel mask has strictly one pair of surround channels, either defined as side or back channels. 7.1 has two pairs of surround channels and would thus return false. 在文件AkSpeakerConfig.h第381行定义。 参考 AK_SPEAKER_BACK_LEFT及AK_SPEAKER_SIDE_LEFT. 参考自 BackToSideChannels(). |