This standard applies to audio devices used to obtain reverberation effects in recording, broadcasting and sound reinforcement technology.
GB/T 6448-1986 history
2011GB/T 12060.9-2011 Sound system equipment.Part 9:Methods of measurement for artificial reverberation,time delay and frequency shift equipment
1986GB/T 6448-1986 Methods of measurement for artificial reverberation equipment
GB/T 6448-1986 Methods of measurement for artificial reverberation equipment was changed to GB/T 12060.9-2011 Sound system equipment.Part 9:Methods of measurement for artificial reverberation,time delay and frequency shift equipment .