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1 // Copyright 2013 Matt R. Flax <flatmax\@> All Rights Reserved.
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2 // Author Matt Flax <flatmax@>
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3 //
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4 // This C++ file is part of an implementation of Lyon's cochlear model:
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5 // "Cascade of Asymmetric Resonators with Fast-Acting Compression"
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6 // to supplement Lyon's upcoming book "Human and Machine Hearing"
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7 //
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8 // Licensed under the Apache License, Version 2.0 (the "License");
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9 // you may not use this file except in compliance with the License.
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10 // You may obtain a copy of the License at
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11 //
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12 // http://www.apache.org/licenses/LICENSE-2.0
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13 //
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14 // Unless required by applicable law or agreed to in writing, software
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15 // distributed under the License is distributed on an "AS IS" BASIS,
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16 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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17 // See the License for the specific language governing permissions and
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18 // limitations under the License.
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19 #ifndef EAR_H_
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20 #define EAR_H_
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21
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22 #include "CAR.H"
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23 #include "IHC.H"
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24 #include "AGC.H"
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25
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26 /**
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27 \author {Matt Flax <flatmax\@>}
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28 \date 2013.02.08
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29
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30 Class which encapsulates an ear, using the CAR, IHC and AGC classes
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31 */
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32 class Ear {
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33 FP_TYPE fs; ///< The sample rate
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34 FP_TYPE max_channels_per_octave; ///< How many channels in each octave
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35 int n_ch; ///< The number of channels (in the ear)
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36
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37 CAR car; ///< The cascade of asymmetric resontaors for this ear
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38 IHC ihc; ///< The inner hair cell for this ear
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39 AGC agc; ///< The automatic gain control for this ear
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40
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41 public:
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42 /** Constructor specifying the sample rate
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43 \param fs_ The sample rate to use
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44 */
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45 Ear(FP_TYPE fs_);
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46
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47 /** Constructor using the DEFAULT_SAMPLERATE as the sample rate
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48 */
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49 Ear(void);
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50 virtual ~Ear(void);
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51
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52 /** Estimates the number of filter stages and executes the dsign method for each of CAR, AGC and IHC
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53 */
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54 void design(void);
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55 };
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56
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57 #endif // EAR_H_
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