| /cmsis-dsp-latest/cmsisdsp/ |
| D | mfcc.py | 28 def melFilterMatrix(dtype,fmin, fmax, numOfMelFilters,fs,FFTSize): argument
48 filters = np.zeros((numOfMelFilters,int(FFTSize/2+1)))
54 mels = np.linspace(fmin_mel, fmax_mel, num=numOfMelFilters+2)
65 for n in range(numOfMelFilters):
92 def dctMatrix(dtype,numOfDctOutputs, numOfMelFilters): argument
106 result = np.zeros((numOfDctOutputs,numOfMelFilters))
107 s=(np.linspace(1,numOfMelFilters,numOfMelFilters) - 0.5)/numOfMelFilters
110 result[i,:]=np.cos(i * np.pi*s) * np.sqrt(2.0/numOfMelFilters)
112 return dt.convert(result.reshape(numOfDctOutputs*numOfMelFilters),dtype)
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| /cmsis-dsp-latest/Testing/PatternGeneration/ |
| D | MFCC.py | 51 def melFilterMatrix(fmin, fmax, numOfMelFilters,fs,FFTSize): argument
53 filters = np.zeros((numOfMelFilters,int(FFTSize/2+1)))
59 mels = np.linspace(fmin_mel, fmax_mel, num=numOfMelFilters+2)
66 for n in range(numOfMelFilters):
78 def dctMatrix(numOfDctOutputs, numOfMelFilters): argument
80 result = np.zeros((numOfDctOutputs,numOfMelFilters))
81 s=(np.linspace(1,numOfMelFilters,numOfMelFilters) - 0.5)/numOfMelFilters
84 result[i,:]=np.cos(i * np.pi*s) * np.sqrt(2.0/numOfMelFilters)
91 def __init__(self,freq_min,freq_high,numOfMelFilters,numOfDctOutputs,FFTSize,sample_rate): argument
94 self._numOfMelFilters = numOfMelFilters
[all …]
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| /cmsis-dsp-latest/Scripts/ |
| D | mfccdata.py | 90 def melFilterMatrix(fmin, fmax, numOfMelFilters,fs,FFTSize): argument
92 filters = np.zeros((numOfMelFilters,int(FFTSize/2+1)))
98 mels = np.linspace(fmin_mel, fmax_mel, num=numOfMelFilters+2)
109 for n in range(numOfMelFilters):
136 def dctMatrix(numOfDctOutputs, numOfMelFilters): argument
138 result = np.zeros((numOfDctOutputs,numOfMelFilters))
139 s=(np.linspace(1,numOfMelFilters,numOfMelFilters) - 0.5)/numOfMelFilters
142 result[i,:]=np.cos(i * np.pi*s) * np.sqrt(2.0/numOfMelFilters)
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| /cmsis-dsp-latest/PythonWrapper/examples/ |
| D | testmfcc.py | 18 numOfMelFilters = 20 variable
22 filtLen,filtPos,packedFilters = mfcc.melFilterMatrix(F32,freq_min, freq_high, numOfMelFilters,sampl…
25 dctMatrixFilters = mfcc.dctMatrix(F32,numOfDctOutputs, numOfMelFilters)
30 status=dsp.arm_mfcc_init_f32(mfccf32,FFTSize,numOfMelFilters,numOfDctOutputs,dctMatrixFilters,
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| D | testmfccq15.py | 18 numOfMelFilters = 20 variable
21 filtLen,filtPos,packedFiltersQ15 = mfcc.melFilterMatrix(Q15,freq_min, freq_high, numOfMelFilters,sa…
22 dctMatrixFiltersQ15 = mfcc.dctMatrix(Q15,numOfDctOutputs, numOfMelFilters)
25 status=dsp.arm_mfcc_init_q15(mfccq15,FFTSize,numOfMelFilters,numOfDctOutputs,
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| D | testmfccq31.py | 18 numOfMelFilters = 20 variable
21 filtLen,filtPos,packedFiltersQ31 = mfcc.melFilterMatrix(Q31,freq_min, freq_high, numOfMelFilters,sa…
22 dctMatrixFiltersQ31 = mfcc.dctMatrix(Q31,numOfDctOutputs, numOfMelFilters)
25 status=dsp.arm_mfcc_init_q31(mfccq31,FFTSize,numOfMelFilters,numOfDctOutputs,
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