alexbrandmeyer@609: //
alexbrandmeyer@609: //  ihc_params.cc
alexbrandmeyer@609: //  CARFAC Open Source C++ Library
alexbrandmeyer@609: //
alexbrandmeyer@609: //  Created by Alex Brandmeyer on 5/10/13.
alexbrandmeyer@609: //
alexbrandmeyer@609: // This C++ file is part of an implementation of Lyon's cochlear model:
alexbrandmeyer@609: // "Cascade of Asymmetric Resonators with Fast-Acting Compression"
alexbrandmeyer@609: // to supplement Lyon's upcoming book "Human and Machine Hearing"
alexbrandmeyer@609: //
alexbrandmeyer@609: // Licensed under the Apache License, Version 2.0 (the "License");
alexbrandmeyer@609: // you may not use this file except in compliance with the License.
alexbrandmeyer@609: // You may obtain a copy of the License at
alexbrandmeyer@609: //
alexbrandmeyer@609: //     http://www.apache.org/licenses/LICENSE-2.0
alexbrandmeyer@609: //
alexbrandmeyer@609: // Unless required by applicable law or agreed to in writing, software
alexbrandmeyer@609: // distributed under the License is distributed on an "AS IS" BASIS,
alexbrandmeyer@609: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
alexbrandmeyer@609: // See the License for the specific language governing permissions and
alexbrandmeyer@609: // limitations under the License.
alexbrandmeyer@609: 
alexbrandmeyer@609: #include "ihc_params.h"
alexbrandmeyer@609: 
alexbrandmeyer@609: 
alexbrandmeyer@609: //Default constructor for IHCParams initializes with the settings from Lyon's
alexbrandmeyer@609: //book 'Human and Machine Hearing'
alexbrandmeyer@609: IHCParams::IHCParams(){
alexbrandmeyer@609:   just_hwr_ = false; //not just a simple HWR
alexbrandmeyer@609:   one_cap_ = true; //uses the Allen model, as in Lyon's book
alexbrandmeyer@609:   tau_lpf_ = 0.000080; //80 microseconds smoothing twice
alexbrandmeyer@609:   tau1_out_ = 0.0005; //depletion tau is pretty fast
alexbrandmeyer@609:   tau1_in_ = 0.010; //recovery tau is slower
alexbrandmeyer@609:   tau2_out_ = 0.0025;
alexbrandmeyer@609:   tau2_in_ = 0.005;
alexbrandmeyer@609:   ac_corner_hz_ = 20;
alexbrandmeyer@609: }
alexbrandmeyer@609: 
alexbrandmeyer@609: //OutputParams method uses <iostream> for debugging purposes, could go in the
alexbrandmeyer@609: //final version
alexbrandmeyer@609: void IHCParams::OutputParams(){
alexbrandmeyer@609:   std::cout << "IHCParams Values" << std::endl;
alexbrandmeyer@609:   std::cout << "****************" << std::endl;
alexbrandmeyer@609:   std::cout << "just_hwr_ = " << just_hwr_ << std::endl;
alexbrandmeyer@609:   std::cout << "one_cap_ = " << one_cap_ << std::endl;
alexbrandmeyer@609:   std::cout << "tau_lpf_ = " << tau_lpf_ << std::endl;
alexbrandmeyer@609:   std::cout << "tau1_out_ = " << tau1_out_ << std::endl;
alexbrandmeyer@609:   std::cout << "tau1_in_ = " << tau1_in_ << std::endl;
alexbrandmeyer@609:   std::cout << "tau2_out_ = " << tau2_out_ << std::endl;
alexbrandmeyer@609:   std::cout << "tau2_in_ = " << tau2_in_ << std::endl;
alexbrandmeyer@609:   std::cout << "ac_corner_hz_ = " << ac_corner_hz_ << std::endl << std::endl;
alexbrandmeyer@609: }
alexbrandmeyer@609: 
alexbrandmeyer@609: //SetParams method allows for use of different inner hair cell parameters
alexbrandmeyer@609: void IHCParams::SetParams(bool jh, bool oc, FPType tlpf, FPType t1out,
alexbrandmeyer@609:                           FPType t1in, FPType t2out, FPType t2in, FPType acchz){
alexbrandmeyer@609:   just_hwr_ = jh;
alexbrandmeyer@609:   one_cap_ = oc;
alexbrandmeyer@609:   tau_lpf_ = tlpf;
alexbrandmeyer@609:   tau1_out_ = t1out;
alexbrandmeyer@609:   tau1_in_ = t1in;
alexbrandmeyer@609:   tau2_out_ = t2out;
alexbrandmeyer@609:   tau2_in_ = t2in;
alexbrandmeyer@609:   ac_corner_hz_ = acchz;  
alexbrandmeyer@609: }