| File
name
|
MoBMCarney.[ch]
|
| Description
|
This
is the Carney ([3.]) non-linear basilar membrane filter model, revised
from her original C code. The centre frequeny mode is controlled using the
UtCFList modulesee 0 Using the Basilar Membrane Filter Modules.
|
| Example
parameter file format
|
4 Order for the gamma tone filters - BM model. single Centre frequency mode for filter. 1000.0 Centre frequency of gamma-tone filter bank. 1100 Cut-off frequency for OHC low-pass filter, Fc (Hz). 5000 Operating point of OHC (feedback) non-linearity, P_Dfb (Pa). 0.462 Asymmetrical bias for OHC non-linearity, P0 (rad). 10.0 Maximum depolarising hair cell voltage, Vmax (V). |
| Test
program directory
|
Tests/Models/Basilar_M/Tests/SSPrograms
|
| Syntax
|
BOOLN RunModel_BasilarM_Carney(EarObjectPtr
data);
|
| Returns
|
TRUE
if the process is successful, otherwise it returns FALSE.
|
| Syntax
|
CFListPtr GetCFList_BasilarM_Carney(void);
|
| Special
Values
|
(The
CFList structure is controlled by the UtCFList module routinessee 0
Using the Basilar Membrane Filter Modules.
|
| Returns
|
Pointer
to the modules CFList structure.
|
| Syntax
|
BOOLN SetAsymmetricalBias_BasilarM_Carney(double
theAsymmetricalBias);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetCFList_BasilarM_Carney(CFListPtr
theCFList);
|
| Special
Values
|
(The
CFList structure is controlled by the UtCFList module routinessee 0
Using the Basilar Membrane Filter Modules.
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetCutOffFrequency_BasilarM_Carney(double
theCutOffFrequency);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetMaxHCVoltage_BasilarM_Carney(double
theMaxHCVoltage);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetHCoperatingPoint_BasilarM_Carney(double
theHCoperatingPoint);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetOrder_BasilarM_Carney(double
theOrder);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
| Syntax
|
BOOLN SetPars_BasilarM_Carney(int order, double
cutOffFrequency, double hCOperatingPoint, double
asymmetricalBias, double maxHCVoltage, CFListPtr
cFList);
|
| Returns
|
TRUE
if the function is successful, otherwise it returns FALSE.
|
# # Main Parameter file # output.dat Name of output file. # Module specifications. #Par. file Name Description #--------- ----- ------------- ParFiles/St/PTone3.par PureTone Stimulus generation paradigm. SimSpecs/BM/CarneyInt.sim Utility_SimulationSpec Simulation specification. # Miscellaneous parameters 100.0 Lowest frequency for pure tone probe stimulus (Hz). 3000.0 Highest frequency for pure tone probe stimulus (Hz). 40 No. of frequencies within range (logarithmic). 2.5e-3 Ramp up rise time for signal (s).
Figure [56] Filter function at CF = 1 kHz for the Carney BM model.
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- ParFiles/St/PTone3.par PureTone Stimulus generation. SimSpecs/BM/CarneyInt.sim Utility_SimulationSpec Simulation spec. # Miscellaneous parameters 100.0 Lowest test centre frequency (Hz). 2000.0 Highest test centre frequency (Hz). 40 The no. of channels within the frequency range. 5000.0 Minimum frequency for sampling interval setting (Hz). 2.5e-3 Ramp up rise time for signal (s). 0 Conversion mode (0 = unity mode, 1 = (mm/s?), 2 = (nm?). 0 Target threshold (?). 0.1 Target accuracy (?). 0.009 Conversion scale factor (? - not used with unity mode).
Figure [57] Tuning Curve at CF = 1 kHz for Carney BM model. This particular Carney model is unstable above ~ 4 kHz. (see [3.])
# # SimulationSpec main parameter file. # output.dat Output file. SimSpecs/BM/CarneyResp.sim Simulation Specification file. # Misc. parameters. 1 Number of repeat runs.
Figure [58] The impulse response of the Carney BM model, CF = 1 kHz.
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- PTone1.par PureTone Stimulus generation paradigm. PreEmph1.par null Outer-/middler-ear filter model. Carney1k.par BasilarM_Carney Basilar membrane filter. # # Miscellaneous parameters # 10 No. of intensity level readings calculated. 0 Initial intensity value (dB SPL). 10.0 Incremental change in intensity. 2.5e-3 Ramp up rise time for signal (s).
Figure [59] The input-output response of all the BM models. The "GammaT" and "Cooke" functions show the linear response.
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- PTone2.par PureTone Stimulus generation paradigm. PreEmph1.par null Outer-/middler-ear filter model. Carney1k.par BasilarM_Carney Basilar membrane filter. # # Miscellaneous parameters # 10 No. of intensity level readings calculated. 0 Initial intensity value (dB SPL). 10.0 Incremental change in intensity. 2000.0 Initial stimulus frequency (Hz). 200.0 Final stimulus frequency (Hz). 200.0 Stimulus frequency decrement (Hz). 2.5e-3 Ramp up rise time for signal (s).
Figure [60] The input-output functions for the Carney BM model. Both on and off CF functions are shown.
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- PTone3.par PureTone Stimulus generation paradigm. Carney1k.par BasilarM_Carney Basilar membrane filter. # # Miscellaneous parameters # 100.0 Lowest frequency for pure tone probe stimulus (Hz). 10000.0 Highest frequency for pure tone probe stimulus (Hz). 10 No. of frequencies within range (logarithmic). 2.5e-3 Ramp up rise time for signal (s).
Figure [61] Input-output (I/O) ratio functions for all the BM models, showing the I/O characteristics with changing frequency.
# # Main Parameter file # output.dat Name of output file. # Module specifications. #Par. file Name Description #--------- ----- ------------- Click1.par Click Stimulus generation paradigm. CarneyLog1par BasilarM_Carney Basilar membrane filter. FindInd1.par Find indexes analysis module parameter file. # Miscellaneous parameters 2.5e-3 Ramp up rise time for signal (s).
Figure [62] Latency of response for the BM models. All the functioncs compare well with experimental observations.
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- PTone4.par PureTone Stimulus generation paradigm. Carney1k.par BasilarM_Carney Basilar membrane filter. # # Miscellaneous parameters # 200.0 Lowest test centre frequency (Hz). 30000.0 Highest test centre frequency (Hz). 10 The no. of frequencies used within range. 0.5 Fractional variation from centre frequency during readings. 100.0 Initial incremental change in the frequency. 20000.0 Minimum frequency for sampling interval setting (Hz). 10.0 Intensity difference from maximum for Q calculation (dB). 2.5e-3 Ramp up rise time for signal (s).
Figure [63] The Q10 tuning characteristics for the BM models. The DRNL response is the only one which shows the fall at high frequencies observed in experimental data (see ??).
# # Main Parameter file # output.dat Name of output file. # Module specifications. #Par. file Name Description #--------- ----- ------------- MPTone5.par PureTone_Multi Stimulus generation paradigm. GPigChinPE.par null Outer-/middler-ear filter model. Carney1k.par BasilarM_Carney Basilar membrane filter. # Miscellaneous parameters 18 Number of readings to calculate. 0 Output intensity reference mode (0/1 = unity/input level). 1.1 Frequency ratio, f2/f1. 0.0 Pure tone 1 intensity increment (dB). 3.0 Pure tone 2 intensity increment (dB). 2 Pure tone 1 multiplier (m1). 1 Pure tone 2 multiplier (m2). 2.5e-3 Ramp rise time (seconds).
Figure [64] Distortion products investigation for the Carney BM model. Paradigm??. The response is similar to that of the DRNL filter, and both compare well with experimental data (see ??).
# # Main Parameter file # output.dat Name of output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- MPTone4.par PureTone_Multi Stimulus generation paradigm. Carney1k.par BasilarM_Carney Basilar membrane filter. # # Miscellaneous parameters # 2.5e-3 Ramp rise time (seconds).
Figure [65] A fourier analysis of the Carney BM model response to a two-tone stimulus at CF = 1 kHz. Note that distortion products occur well away from CF, which does not occur in experimental data.
# # Main Parameter file # output.dat Name of first output file. # # Module specifications. # #Par. file Name Description #--------- ----- ------------- Click2.par Click Stimulus generation paradigm. PreEmph1.par null Outer-/middler-ear filter model. Carney1k.par BasilarM_Carney basilar membrane filter model. # # Miscellaneous parameters # 2.5e-3 Ramp up rise time for signal (s).
Figure [66] Fourier Analysis of the Carney BM model, CF = 1 kHz response to a single pure tone stimulus.
# # Main Parameter file # output.dat Name of output file. # Module specifications. #Par. file Name Description #--------- ----- ------------- MPTone6.par PureTone_Multi Stimulus generation paradigm. PreEmph1.par null Outer-/middler-ear filter model. Carney1k.par BasilarM_Carney basilar membrane filter model. # Miscellaneous parameters 20 Number of test frequencies. 2000.0 Lowest test frequency (Hz). 15170.0 Highest test frequency (Hz). 80.0 Test pure tone initial intensity (dB SPL). 0.0 Final test stimulus Intensity step (dB SPL). 10.0 Test stimulus intensity decrement (dB). 2.5e-3 Ramp up rise time for signal (s).
Figure [67] Two-tone suppression response for the Carney BM model. Note that there the characteristic areas of suppresion around CF are not evident.
