Common Loudspeaker Format

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FAQ

Who controls the CLF format specification?

What resolution does the CLF format use?

How do I use CLF data?

How do I create CLF files?


Who controls the CLF format specification?

The CLF format is controlled by a small group software developers and CLF data authors. The full list can be found here.

What resolution does the CLF format use?

CLF v1 supports two data resolutions. A CLF Type 1 file contains Octave/10 degree data, a CLF Type 2 file contains Third Octave/5 degree data. Two resolutions are used to support legacy data that is only available in the lower resolution format. Authors are encouraged to publish data in the 'as measured' format so that end users know what they are using.

CLF2 v2 supports optional phase, filters and multipart files (for modeling multi-way loudspeakers and improved array modeling)

How do I use CLF data?

End users can use the free CLF viewer to view the contents of a CLF file. To use the data for a design you need software that can import the CLF format data.

How do I create CLF files?

Start by downloading the CLF Authoring kit. Once you are familiar with the requirements, request an author key (free) and an upgrade to the fully functional software. Note that the format is primarily meant for manufacturers and independent measurement services