Home / Standards / GB/T 7347-1987 GB/T 7347-1987 Active The standard spectrum of Chinese speech 汉语标准频谱 Standard Type GBT ICS 35.020 CCS L04 Status 现行 Issue Date 1987-03-02 Implementation 1987-11-01 Responsible Dept 国家标准委 Drafting Unit N/A