Readme to the data published in:
T. Sankowsky-Rothe, H. Schepker, S. Doclo, M. Blau, "Reciprocal measurement of
acoustic feedback paths in hearing aids" JASA 138 (4), pp. EL399--EL404, 2015
The file "data_JASAEL_reciprocal_fbp_measurement.mat" contains all the relevant
data of feedback path measurements in Matlab file format.
In particular the following variables are included in the file:
vF frequency vector
cCombination cell string with the investigated combinations of venting
and ear canal geometries
cMeasurementNames cell string with the investigated measurement procedures
(direct front, direct rear, reciprocal rear)
mFBPath_FF 4-D-matrix with the measured feedback paths (frequency
domain) for the free-field condition, the 1st dimension
corresponds to the frequency vector, the 2nd dimension
corresponds to the different combinations (venting and ear
canal geometries), the 3rd dimension corresponds to the
measurement procedure (direct front, direct rear,
reciprocal rear), and the 4th dimension corresponds to the
repetition
mFBPath_Wall 3-D-matrix with the measured feedback paths (frequency
domain) for the wall condition, the 1st dimension
corresponds to the frequency vector, the 2nd dimension
corresponds to the different combinations (venting and ear
canal geometries), and the 3rd dimension corresponds to the
measurement procedure (direct front, direct rear,
reciprocal rear)
mFBPath_PhoneNear 3-D-matrix with the measured feedback paths (frequency
domain) for the near phone condition, the 1st dimension
corresponds to the frequency vector, the 2nd dimension
corresponds to the different combinations (venting and ear
canal geometries), and the 3rd dimension corresponds to the
measurement procedure (direct front, direct rear,
reciprocal rear)
mFBPath_PhoneMid 3-D-matrix with the measured feedback paths (frequency
domain) for the medium phone condition, the 1st dimension
corresponds to the frequency vector, the 2nd dimension
corresponds to the different combinations (venting and ear
canal geometries), and the 3rd dimension corresponds to the
measurement procedure (direct front, direct rear,
reciprocal rear)
mFBPath_PhoneFar 3-D-matrix with the measured feedback paths (frequency
domain) for the far phone condition, the 1st dimension
corresponds to the frequency vector, the 2nd dimension
corresponds to the different combinations (venting and ear
canal geometries), and the 3rd dimension corresponds to the
measurement procedure (direct front, direct rear,
reciprocal rear)
fs sampling frequency