flatmax@674: 
flatmax@598: // Author Matt Flax <flatmax@>
flatmax@597: //
flatmax@597: // This C++ file is part of an implementation of Lyon's cochlear model:
flatmax@597: // "Cascade of Asymmetric Resonators with Fast-Acting Compression"
flatmax@597: // to supplement Lyon's upcoming book "Human and Machine Hearing"
flatmax@597: //
flatmax@597: // Licensed under the Apache License, Version 2.0 (the "License");
flatmax@597: // you may not use this file except in compliance with the License.
flatmax@597: // You may obtain a copy of the License at
flatmax@597: //
flatmax@597: //     http://www.apache.org/licenses/LICENSE-2.0
flatmax@597: //
flatmax@597: // Unless required by applicable law or agreed to in writing, software
flatmax@597: // distributed under the License is distributed on an "AS IS" BASIS,
flatmax@597: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
flatmax@597: // See the License for the specific language governing permissions and
flatmax@597: // limitations under the License.
flatmax@597: #ifndef AGCPARAMS_H_
flatmax@597: #define AGCPARAMS_H_
flatmax@597: 
flatmax@597: #include "Parameters.H"
flatmax@597: 
flatmax@597: /**
flatmax@597:     \author {Matt Flax <flatmax\@>}
flatmax@597:     \date 2013.02.08
flatmax@597: 
flatmax@597:     Parameters for the automatic gain control
flatmax@597: */
flatmax@597: class AGCParam : public Parameters {
flatmax@597:     int n_stages; ///< Stage count
flatmax@597:     Array<FP_TYPE, AGC_STAGE_COUNT,1> time_constants; ///< seconds
flatmax@597:     FP_TYPE AGC_stage_gain; ///< gain from each stage to next slower stage
flatmax@597:     Array<int,AGC_STAGE_COUNT, 1> decimation; ///< how often to update the AGC states
flatmax@597:     Array<FP_TYPE, AGC_STAGE_COUNT,1> AGC1_scales; ///< in units of channels
flatmax@597:     Array<FP_TYPE, AGC_STAGE_COUNT,1> AGC2_scales; ///< spread more toward base
flatmax@597:     FP_TYPE AGC_mix_coeff; ///< Dick, whats this ?
flatmax@597: public:
flatmax@597:     /// Constructor with default parameter values
flatmax@597:     AGCParam(int n_stages_=AGC_STAGE_COUNT,
flatmax@597:              Array<FP_TYPE, AGC_STAGE_COUNT,1> time_constants_=Array<FP_TYPE, AGC_STAGE_COUNT,1>(1., 4., 16., 64.)*0.002,
flatmax@597:              FP_TYPE AGC_stage_gain_=2.,
flatmax@597:              Array<int,AGC_STAGE_COUNT, 1> decimation_=Array<int,AGC_STAGE_COUNT, 1>(8, 2, 2, 2),
flatmax@597:              Array<FP_TYPE, AGC_STAGE_COUNT,1> AGC1_scales_=Array<FP_TYPE, AGC_STAGE_COUNT,1>(1.0, 1.4,  2.0, 2.8),
flatmax@597:              Array<FP_TYPE, AGC_STAGE_COUNT,1> AGC2_scales_=Array<FP_TYPE, AGC_STAGE_COUNT,1>(1.6, 2.25, 3.2, 4.5),
flatmax@597:              FP_TYPE AGC_mix_coeff_=0.5);
flatmax@597: 
flatmax@597:     virtual ~AGCParam();
flatmax@597: };
flatmax@597: 
flatmax@597: #endif // AGCPARAMS_H_