xref: /aosp_15_r20/external/armnn/samples/SpeechRecognition/test/PreprocessTest.cpp (revision 89c4ff92f2867872bb9e2354d150bf0c8c502810)
1*89c4ff92SAndroid Build Coastguard Worker //
2*89c4ff92SAndroid Build Coastguard Worker // Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
3*89c4ff92SAndroid Build Coastguard Worker // SPDX-License-Identifier: MIT
4*89c4ff92SAndroid Build Coastguard Worker //
5*89c4ff92SAndroid Build Coastguard Worker 
6*89c4ff92SAndroid Build Coastguard Worker #include <catch.hpp>
7*89c4ff92SAndroid Build Coastguard Worker #include <limits>
8*89c4ff92SAndroid Build Coastguard Worker 
9*89c4ff92SAndroid Build Coastguard Worker #include "DataStructures.hpp"
10*89c4ff92SAndroid Build Coastguard Worker #include "Wav2LetterPreprocessor.hpp"
11*89c4ff92SAndroid Build Coastguard Worker 
PopulateTestWavVector(std::vector<int16_t> & vec)12*89c4ff92SAndroid Build Coastguard Worker void PopulateTestWavVector(std::vector<int16_t>& vec)
13*89c4ff92SAndroid Build Coastguard Worker {
14*89c4ff92SAndroid Build Coastguard Worker     constexpr int int16max = std::numeric_limits<int16_t>::max();
15*89c4ff92SAndroid Build Coastguard Worker     int val = 0;
16*89c4ff92SAndroid Build Coastguard Worker     for (size_t i = 0; i < vec.size(); ++i, ++val)
17*89c4ff92SAndroid Build Coastguard Worker     {
18*89c4ff92SAndroid Build Coastguard Worker 
19*89c4ff92SAndroid Build Coastguard Worker         /* We want a differential filter response from both - order 1
20*89c4ff92SAndroid Build Coastguard Worker          * and 2 => Don't have a linear signal here - we use a signal
21*89c4ff92SAndroid Build Coastguard Worker          * using squares for example. Alternate sign flips might work
22*89c4ff92SAndroid Build Coastguard Worker          * just as well and will be computationally less work! */
23*89c4ff92SAndroid Build Coastguard Worker         int valsq = val * val;
24*89c4ff92SAndroid Build Coastguard Worker         if (valsq > int16max)
25*89c4ff92SAndroid Build Coastguard Worker         {
26*89c4ff92SAndroid Build Coastguard Worker             val = 0;
27*89c4ff92SAndroid Build Coastguard Worker             valsq = 0;
28*89c4ff92SAndroid Build Coastguard Worker         }
29*89c4ff92SAndroid Build Coastguard Worker         vec[i] = valsq;
30*89c4ff92SAndroid Build Coastguard Worker     }
31*89c4ff92SAndroid Build Coastguard Worker }
32*89c4ff92SAndroid Build Coastguard Worker 
33*89c4ff92SAndroid Build Coastguard Worker TEST_CASE("Preprocessing calculation INT8")
34*89c4ff92SAndroid Build Coastguard Worker {
35*89c4ff92SAndroid Build Coastguard Worker     /*Test  Constants: */
36*89c4ff92SAndroid Build Coastguard Worker     const uint32_t  windowLen             = 512;
37*89c4ff92SAndroid Build Coastguard Worker     const uint32_t  windowStride          = 160;
38*89c4ff92SAndroid Build Coastguard Worker     const float     quantScale            = 0.1410219967365265;
39*89c4ff92SAndroid Build Coastguard Worker     const int       quantOffset           = -11;
40*89c4ff92SAndroid Build Coastguard Worker     int             numMfccVectors        = 10;
41*89c4ff92SAndroid Build Coastguard Worker     const int       sampFreq              = 16000;
42*89c4ff92SAndroid Build Coastguard Worker     const int       frameLenMs            = 32;
43*89c4ff92SAndroid Build Coastguard Worker     const int       frameLenSamples       = sampFreq * frameLenMs * 0.001;
44*89c4ff92SAndroid Build Coastguard Worker     const int       numMfccFeats          = 13;
45*89c4ff92SAndroid Build Coastguard Worker     const int       audioDataToPreProcess = 512 + ((numMfccVectors -1) * windowStride);
46*89c4ff92SAndroid Build Coastguard Worker     int             outputBufferSize = numMfccVectors * numMfccFeats * 3;
47*89c4ff92SAndroid Build Coastguard Worker 
48*89c4ff92SAndroid Build Coastguard Worker     /* Test wav memory */
49*89c4ff92SAndroid Build Coastguard Worker     std::vector <int16_t> testWav1((windowStride * numMfccVectors) +
50*89c4ff92SAndroid Build Coastguard Worker                               (windowLen - windowStride));
51*89c4ff92SAndroid Build Coastguard Worker     /* Populate with dummy input */
52*89c4ff92SAndroid Build Coastguard Worker     PopulateTestWavVector(testWav1);
53*89c4ff92SAndroid Build Coastguard Worker 
54*89c4ff92SAndroid Build Coastguard Worker     MfccParams mfccParams(sampFreq, 128, 0, 8000, numMfccFeats,
55*89c4ff92SAndroid Build Coastguard Worker                           frameLenSamples, false, numMfccVectors);
56*89c4ff92SAndroid Build Coastguard Worker 
57*89c4ff92SAndroid Build Coastguard Worker     std::unique_ptr<Wav2LetterMFCC> mfccInst = std::make_unique<Wav2LetterMFCC>(mfccParams);
58*89c4ff92SAndroid Build Coastguard Worker 
59*89c4ff92SAndroid Build Coastguard Worker     std::vector<float> fullAudioData;
60*89c4ff92SAndroid Build Coastguard Worker 
61*89c4ff92SAndroid Build Coastguard Worker     for(int i = 0; i < 4; ++i)
62*89c4ff92SAndroid Build Coastguard Worker     {
63*89c4ff92SAndroid Build Coastguard Worker         for (auto f : testWav1)
64*89c4ff92SAndroid Build Coastguard Worker         {
65*89c4ff92SAndroid Build Coastguard Worker             fullAudioData.emplace_back(static_cast<float>(f) / (1<<15));
66*89c4ff92SAndroid Build Coastguard Worker         }
67*89c4ff92SAndroid Build Coastguard Worker     }
68*89c4ff92SAndroid Build Coastguard Worker 
69*89c4ff92SAndroid Build Coastguard Worker     Wav2LetterPreprocessor prep(frameLenSamples, windowStride, std::move(mfccInst));
70*89c4ff92SAndroid Build Coastguard Worker 
71*89c4ff92SAndroid Build Coastguard Worker     std::vector<int8_t> outputBuffer(outputBufferSize);
72*89c4ff92SAndroid Build Coastguard Worker 
73*89c4ff92SAndroid Build Coastguard Worker     prep.Invoke(fullAudioData.data(), audioDataToPreProcess, outputBuffer, quantOffset, quantScale);
74*89c4ff92SAndroid Build Coastguard Worker 
75*89c4ff92SAndroid Build Coastguard Worker     int8_t expectedResult[numMfccVectors][numMfccFeats*3] =
76*89c4ff92SAndroid Build Coastguard Worker     {
77*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 0 */
78*89c4ff92SAndroid Build Coastguard Worker             -32, 4, -9, -8, -10, -10, -11, -11, -11, -11, -12, -11, -11,    /* MFCCs   */
79*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,    /* Delta 1 */
80*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,    /* Delta 2 */
81*89c4ff92SAndroid Build Coastguard Worker 
82*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 1 */
83*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -8, -10, -10, -11, -11, -11, -11, -12, -11, -11,
84*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
85*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
86*89c4ff92SAndroid Build Coastguard Worker 
87*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 2 */
88*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -9, -10, -10, -11, -11, -11, -11, -12, -12, -12,
89*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
90*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
91*89c4ff92SAndroid Build Coastguard Worker 
92*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 3 */
93*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -9, -10, -10, -11, -11, -11, -11, -11, -12, -12,
94*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
95*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
96*89c4ff92SAndroid Build Coastguard Worker 
97*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 4 : this should have valid delta 1 and delta 2 */
98*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -9, -10, -10, -11, -11, -11, -11, -11, -12, -12,
99*89c4ff92SAndroid Build Coastguard Worker             -38, -29, -9, 1, -2, -7, -8, -8, -12, -16, -14, -5, 5,
100*89c4ff92SAndroid Build Coastguard Worker             -68, -50, -13, 5, 0, -9, -9, -8, -13, -20, -19, -3, 15,
101*89c4ff92SAndroid Build Coastguard Worker 
102*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 5 : this should have valid delta 1 and delta 2 */
103*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -8, -10, -10, -11, -11, -11, -11, -11, -12, -12,
104*89c4ff92SAndroid Build Coastguard Worker             -62, -45, -11, 5, 0, -8, -9, -8, -12, -19, -17, -3, 13,
105*89c4ff92SAndroid Build Coastguard Worker             -27, -22, -13, -9, -11, -12, -12, -11, -11, -13, -13, -10, -6,
106*89c4ff92SAndroid Build Coastguard Worker 
107*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 6 */
108*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -8, -10, -10, -11, -11, -11, -11, -12, -11, -11,
109*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
110*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
111*89c4ff92SAndroid Build Coastguard Worker 
112*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 7 */
113*89c4ff92SAndroid Build Coastguard Worker             -32, 4, -9, -8, -10, -10, -11, -11, -11, -12, -12, -11, -11,
114*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
115*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
116*89c4ff92SAndroid Build Coastguard Worker 
117*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 8 */
118*89c4ff92SAndroid Build Coastguard Worker             -32, 4, -9, -8, -10, -10, -11, -11, -11, -12, -12, -11, -11,
119*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
120*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
121*89c4ff92SAndroid Build Coastguard Worker 
122*89c4ff92SAndroid Build Coastguard Worker             /* Feature vec 9 */
123*89c4ff92SAndroid Build Coastguard Worker             -31, 4, -9, -8, -10, -10, -11, -11, -11, -11, -12, -11, -11,
124*89c4ff92SAndroid Build Coastguard Worker             -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11,
125*89c4ff92SAndroid Build Coastguard Worker             -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10
126*89c4ff92SAndroid Build Coastguard Worker     };
127*89c4ff92SAndroid Build Coastguard Worker 
128*89c4ff92SAndroid Build Coastguard Worker     /* Check that the elements have been calculated correctly */
129*89c4ff92SAndroid Build Coastguard Worker     for (uint32_t j = 0; j < numMfccVectors; ++j)
130*89c4ff92SAndroid Build Coastguard Worker     {
131*89c4ff92SAndroid Build Coastguard Worker         for (uint32_t i = 0; i < numMfccFeats * 3; ++i)
132*89c4ff92SAndroid Build Coastguard Worker         {
133*89c4ff92SAndroid Build Coastguard Worker             size_t tensorIdx = (j * numMfccFeats * 3) + i;
134*89c4ff92SAndroid Build Coastguard Worker             CHECK(static_cast<int16_t>(outputBuffer.at(tensorIdx) == static_cast<int16_t>(expectedResult[j][i])));
135*89c4ff92SAndroid Build Coastguard Worker         }
136*89c4ff92SAndroid Build Coastguard Worker     }
137*89c4ff92SAndroid Build Coastguard Worker }
138