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/*
* Copyright (c) 2021 Arm Limited. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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 KWS_ASR_DSCNN_MFCC_HPP
#define KWS_ASR_DSCNN_MFCC_HPP
#include "Mfcc.hpp"
namespace arm {
namespace app {
namespace audio {
/* Class to provide DS-CNN specific MFCC calculation requirements. */
class DsCnnMFCC : public MFCC {
public:
static constexpr uint32_t ms_defaultSamplingFreq = 16000;
static constexpr uint32_t ms_defaultNumFbankBins = 40;
static constexpr uint32_t ms_defaultMelLoFreq = 20;
static constexpr uint32_t ms_defaultMelHiFreq = 4000;
static constexpr bool ms_defaultUseHtkMethod = true;
explicit DsCnnMFCC(const size_t numFeats, const size_t frameLen)
: MFCC(MfccParams(
ms_defaultSamplingFreq, ms_defaultNumFbankBins,
ms_defaultMelLoFreq, ms_defaultMelHiFreq,
numFeats, frameLen, ms_defaultUseHtkMethod))
{}
DsCnnMFCC() = delete;
~DsCnnMFCC() = default;
};
} /* namespace audio */
} /* namespace app */
} /* namespace arm */
#endif /* KWS_ASR_DSCNN_MFCC_HPP */
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