view trunk/carfac/carfac_util.h @ 705:be2b68ced23d

Make the C++ SAI match the Matlab implementation.

 - Fix syntax error which caused a linear window to be used instead of the correct sine window.
 - Correct off-by-one indexing errors to compensate for 1-based indexing in Matlab.
 - Enable test to verify that the C++ output matches Matlab with high precision.

//
//  carfac_util.h
//  CARFAC Open Source C++ Library
//
//  Created by Alex Brandmeyer on 5/10/13.
//
// This C++ file is part of an implementation of Lyon's cochlear model:
// "Cascade of Asymmetric Resonators with Fast-Acting Compression"
// to supplement Lyon's upcoming book "Human and Machine Hearing"
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef CARFAC_CARFAC_UTIL_H
#define CARFAC_CARFAC_UTIL_H

#include "common.h"

// Returns the IHC detection nonilnearity function of the filter output values.
// This is here because it is called both in design and run phases.
ArrayX CARFACDetect(const ArrayX& x);

#endif  // CARFAC_CARFAC_UTIL_H