Standard Number: BS 2475:1964 Title: Specification for octave and one-third octave band-pass filters Abstract: Performance requirements primarily for the analysis of acoustic noise and vibration. Status: Superseded, Withdrawn Publication Date: 1964/10/15 Confirmed on: 1988/07/15 Cross References: BS 3593, Withdrawn on: 1996/07/15 Replaced by: BS EN 61260:1996, International Relationships: IEC 60225 Equivalent Amended by: PD 5536, May 1965 (£0.00(M), £0.00(NM)) Supersedes Draft: D63/9270 DC Descriptors: Bandpass filters, Acoustic filters, Electric filters, Acoustic equipment, Acoustic properties and phenomena, Attenuation, Marking