Low-Frequency Extension of Gated Loudspeaker Measurements

Backman J. Low-Frequency Extension of Gated Loudspeaker Measurements. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7353. Available from: https://aes.org/publications/elibrary-page/?id=14483

@inproceedings{Backman2008_14483,
  author = {Backman, Juha},
  title = {{Low-Frequency Extension of Gated Loudspeaker Measurements}},
  booktitle = {AES Convention 124},
  note = {Paper 7353},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14483}
}

TY  - CPAPER
TI  - Low-Frequency Extension of Gated Loudspeaker Measurements
AU  - Backman, Juha
T2  - AES Convention 124
M1  - Paper 7353
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14483
PB  - Audio Engineering Society
LA  - en
AB  - The free-field response of a loudspeaker system can be approximated through a gated measurement, made in a sufficiently large space. The frequency resolution is nominally determined by the time gap between the direct sound and the first reflection, but the actual low-frequency accuracy of gated measurements is reduced also by the group delay of the loudspeaker itself. The group delay at low frequencies may cause a large fraction of the energy sound radiation to be cut off, underestimating the low-frequency response. A method is presented to estimate the approximate low-frequency response from the impedance measurement of the loudspeaker and to use the response to pre-process the acoustical measurement to improve the accuracy of the gated measurement.
ER  -