GOST R 53537-2009 Sound broadcasting The basic electric parameters of channels and of studio quality (with frequency band 20 20000 Hz)《声音广播 信道与演播室质量的基本电气参数(频带为20-20000 Hz)》.pdf

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GOST R 53537-2009 Sound broadcasting The basic electric parameters of channels and of studio quality (with frequency band 20   20000 Hz)《声音广播 信道与演播室质量的基本电气参数(频带为20-20000 Hz)》.pdf_第1页
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