| /* |
| * 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_DSCNN_MFCC_HPP |
| #define KWS_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_DSCNN_MFCC_HPP */ |