“STANDARD” OCTAVE BANDS
By Dr Colin Mercer, Technical Director, Prosig
The “standard” centre frequencies for 1/3 Octaves are based upon the Preferred Numbers. These date from around 1965. They are not specific to third octaves. The only reference we have is to British Standard BS2045:1965 Preferred Numbers. There are probably equivalent ISO and ANSI versions. read »»»
