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what's the meaning of sub-octave and 1/3 octave bandwidth

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nightorc

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1/3 octave bandwidth

Hi all,

Stupid question here. But I did not find any definition on the Internet. Thanks for helping.

James
 

bandwidth 1/3 means

These are band pass filters whose bandwidth is some fraction of the geometric center frequency. Half and third octave filter banks are commonly used on the input of high performance HF receivers.
 

octave bandwidth definition

Yea, thanks for that. For example, one octave bandwidth means the bandwidth is equal to the lower frequency. What about sub-octave and 1/3 octave? Thanks.
 

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