AudioIO: add dnn speech recognition sample on C++#21458
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alalek merged 5 commits intoopencv:4.xfrom Feb 28, 2022
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alalek
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Jan 18, 2022
Qannaf
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Jan 24, 2022
samples/dnn/speech_recognition.cpp
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| return res; | ||
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| std::vector<std::vector<double>> mel(int n_mels, double fmin, double fmax) |
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| std::vector<std::vector<double>> mel(int n_mels, double fmin, double fmax) | |
| vector<vector<double>> mel(int n_mels, double fmin, double fmax) |
samples/dnn/speech_recognition.cpp
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| // STFT preperation | ||
| std::vector<double> pad_window_center(std::vector<double>&data, int size) |
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| std::vector<double> pad_window_center(std::vector<double>&data, int size) | |
| vector<double> pad_window_center(vector<double>&data, int size) |
samples/dnn/speech_recognition.cpp
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| // Pad the window out to n_fft size | ||
| int n = static_cast<int>(data.size()); | ||
| int lpad = static_cast<int>((size - n) / 2); | ||
| std::vector<double> pad_array; |
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| std::vector<double> pad_array; | |
| vector<double> pad_array; |
samples/dnn/speech_recognition.cpp
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| return pad_array; | ||
| } | ||
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| std::vector<std::vector<double>> frame(std::vector<double>& x) |
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| std::vector<std::vector<double>> frame(std::vector<double>& x) | |
| vector<vector<double>> frame(vector<double>& x) |
samples/dnn/speech_recognition.cpp
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| { | ||
| // Slices a data array into overlapping frames. | ||
| int n_frames = static_cast<int>(1 + (x.size() - n_fft) / hop_length); | ||
| std::vector<std::vector<double>> new_x(n_fft, std::vector<double>(n_frames)); |
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| std::vector<std::vector<double>> new_x(n_fft, std::vector<double>(n_frames)); | |
| vector<vector<double>> new_x(n_fft, vector<double>(n_frames)); |
samples/dnn/speech_recognition.cpp
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| std::vector<double> hanning() | ||
| { | ||
| // https://en.wikipedia.org/wiki/Window_function#Hann_and_Hamming_windows | ||
| std::vector<double> window_tensor; |
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| std::vector<double> window_tensor; | |
| vector<double> window_tensor; |
samples/dnn/speech_recognition.cpp
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| return window_tensor; | ||
| } | ||
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| std::vector<std::vector<double>> stft_power(std::vector<double>& y) |
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| std::vector<std::vector<double>> stft_power(std::vector<double>& y) | |
| vector<vector<double>> stft_power(vector<double>& y) |
samples/dnn/speech_recognition.cpp
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| // https://en.wikipedia.org/wiki/Short-time_Fourier_transform | ||
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| // Pad the time series so that frames are centered | ||
| std::vector<double> new_y; |
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| std::vector<double> new_y; | |
| vector<double> new_y; |
Merged
a-sajjad72
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Mar 30, 2023
AudioIO: add dnn speech recognition sample on C++ * add speech recognition cpp * fix warnings * fixes * fix warning * microphone fix
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Patch to opencv_extra has the same branch name.