diff options
author | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 |
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committer | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 |
commit | a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch) | |
tree | 13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c | |
parent | bde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff) |
add plibsys
Diffstat (limited to '3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c')
-rw-r--r-- | 3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c | 718 |
1 files changed, 718 insertions, 0 deletions
diff --git a/3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c b/3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c new file mode 100644 index 0000000..82fa859 --- /dev/null +++ b/3rdparty/portaudio/qa/loopback/src/test_audio_analyzer.c @@ -0,0 +1,718 @@ + +/* + * PortAudio Portable Real-Time Audio Library + * Latest Version at: http://www.portaudio.com + * + * Copyright (c) 1999-2010 Phil Burk and Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include "qa_tools.h" +#include "audio_analyzer.h" +#include "test_audio_analyzer.h" +#include "write_wav.h" +#include "biquad_filter.h" + +#define FRAMES_PER_BLOCK (64) +#define PRINT_REPORTS 0 + +#define TEST_SAVED_WAVE (0) + +/*==========================================================================================*/ +/** + * Detect a single tone. + */ +static int TestSingleMonoTone( void ) +{ + int result = 0; + PaQaSineGenerator generator; + PaQaRecording recording; + float buffer[FRAMES_PER_BLOCK]; + double sampleRate = 44100.0; + int maxFrames = ((int)sampleRate) * 1; + int samplesPerFrame = 1; + int stride = 1; + int done = 0; + + double freq = 234.5; + double amp = 0.5; + + double mag1, mag2; + + // Setup a sine oscillator. + PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate ); + + result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + done = 0; + while (!done) + { + PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride ); + done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + } + + mag1 = PaQa_CorrelateSine( &recording, freq, sampleRate, 0, recording.numFrames, NULL ); + QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 ); + + mag2 = PaQa_CorrelateSine( &recording, freq * 1.23, sampleRate, 0, recording.numFrames, NULL ); + QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 ); + + PaQa_TerminateRecording( &recording ); + return 0; + +error: + PaQa_TerminateRecording( &recording); + return 1; + +} + +/*==========================================================================================*/ +/** + * Mix multiple tones and then detect them. + */ + +static int TestMixedMonoTones( void ) +{ + int i; + int result = 0; +#define NUM_TONES (5) + PaQaSineGenerator generators[NUM_TONES]; + PaQaRecording recording; + float buffer[FRAMES_PER_BLOCK]; + double sampleRate = 44100.0; + int maxFrames = ((int)sampleRate) * 1; + int samplesPerFrame = 1; + + double baseFreq = 234.5; + double amp = 0.1; + + double mag2; + + int stride = samplesPerFrame; + int done = 0; + + // Setup a sine oscillator. + for( i=0; i<NUM_TONES; i++ ) + { + PaQa_SetupSineGenerator( &generators[i], PaQa_GetNthFrequency( baseFreq, i ), amp, sampleRate ); + } + + result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + done = 0; + while (!done) + { + PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + for( i=0; i<NUM_TONES; i++ ) + { + PaQa_MixSine( &generators[i], buffer, FRAMES_PER_BLOCK, stride ); + } + done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + } + + for( i=0; i<NUM_TONES; i++ ) + { + double mag = PaQa_CorrelateSine( &recording, PaQa_GetNthFrequency( baseFreq, i), sampleRate, 0, recording.numFrames, NULL ); + QA_ASSERT_CLOSE( "exact frequency match", amp, mag, 0.01 ); + } + + mag2 = PaQa_CorrelateSine( &recording, baseFreq * 0.87, sampleRate, 0, recording.numFrames, NULL ); + QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 ); + + PaQa_TerminateRecording( &recording ); + return 0; + +error: + PaQa_TerminateRecording( &recording); + return 1; + +} + + +/*==========================================================================================*/ +/** + * Generate a recording with added or dropped frames. + */ + +static void MakeRecordingWithAddedFrames( PaQaRecording *recording, PaQaTestTone *testTone, int glitchPosition, int framesToAdd ) +{ + PaQaSineGenerator generator; +#define BUFFER_SIZE 512 + float buffer[BUFFER_SIZE]; + + int frameCounter = testTone->startDelay; + + int stride = 1; + // Record some initial silence. + int done = PaQa_WriteSilence( recording, testTone->startDelay ); + + // Setup a sine oscillator. + PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate ); + + while (!done) + { + int framesThisLoop = BUFFER_SIZE; + + if( frameCounter == glitchPosition ) + { + if( framesToAdd > 0 ) + { + // Record some frozen data without advancing the sine generator. + done = PaQa_RecordFreeze( recording, framesToAdd ); + frameCounter += framesToAdd; + } + else if( framesToAdd < 0 ) + { + // Advance sine generator a few frames. + PaQa_MixSine( &generator, buffer, 0 - framesToAdd, stride ); + } + + } + else if( (frameCounter < glitchPosition) && ((frameCounter + framesThisLoop) > glitchPosition) ) + { + // Go right up to the glitchPosition. + framesThisLoop = glitchPosition - frameCounter; + } + + if( framesThisLoop > 0 ) + { + PaQa_EraseBuffer( buffer, framesThisLoop, testTone->samplesPerFrame ); + PaQa_MixSine( &generator, buffer, framesThisLoop, stride ); + done = PaQa_WriteRecording( recording, buffer, framesThisLoop, testTone->samplesPerFrame ); + } + frameCounter += framesThisLoop; + } +} + + +/*==========================================================================================*/ +/** + * Generate a clean recording. + */ + +static void MakeCleanRecording( PaQaRecording *recording, PaQaTestTone *testTone ) +{ + PaQaSineGenerator generator; +#define BUFFER_SIZE 512 + float buffer[BUFFER_SIZE]; + + int stride = 1; + // Record some initial silence. + int done = PaQa_WriteSilence( recording, testTone->startDelay ); + + // Setup a sine oscillator. + PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate ); + + // Generate recording with good phase. + while (!done) + { + PaQa_EraseBuffer( buffer, BUFFER_SIZE, testTone->samplesPerFrame ); + PaQa_MixSine( &generator, buffer, BUFFER_SIZE, stride ); + done = PaQa_WriteRecording( recording, buffer, BUFFER_SIZE, testTone->samplesPerFrame ); + } +} + +/*==========================================================================================*/ +/** + * Generate a recording with pop. + */ + +static void MakeRecordingWithPop( PaQaRecording *recording, PaQaTestTone *testTone, int popPosition, int popWidth, double popAmplitude ) +{ + int i; + + MakeCleanRecording( recording, testTone ); + + // Apply glitch to good recording. + if( (popPosition + popWidth) >= recording->numFrames ) + { + popWidth = (recording->numFrames - popPosition) - 1; + } + + for( i=0; i<popWidth; i++ ) + { + float good = recording->buffer[i+popPosition]; + float bad = (good > 0.0) ? (good - popAmplitude) : (good + popAmplitude); + recording->buffer[i+popPosition] = bad; + } +} + +/*==========================================================================================*/ +/** + * Detect one phase error in a recording. + */ +static int TestDetectSinglePhaseError( double sampleRate, int cycleSize, int latencyFrames, int glitchPosition, int framesAdded ) +{ + int result = 0; + PaQaRecording recording; + PaQaTestTone testTone; + PaQaAnalysisResult analysisResult = { 0.0 }; + int framesDropped = 0; + int maxFrames = ((int)sampleRate) * 2; + + testTone.samplesPerFrame = 1; + testTone.sampleRate = sampleRate; + testTone.frequency = sampleRate / cycleSize; + testTone.amplitude = 0.5; + testTone.startDelay = latencyFrames; + + result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + MakeRecordingWithAddedFrames( &recording, &testTone, glitchPosition, framesAdded ); + + PaQa_AnalyseRecording( &recording, &testTone, &analysisResult ); + + if( framesAdded < 0 ) + { + framesDropped = -framesAdded; + framesAdded = 0; + } + +#if PRINT_REPORTS + printf("\n=== Dropped Frame Analysis ===================\n"); + printf(" expected actual\n"); + printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency ); + printf(" num added frames: %10.3f %10.3f\n", (double)framesAdded, analysisResult.numAddedFrames ); + printf(" added frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.addedFramesPosition ); + printf(" num dropped frames: %10.3f %10.3f\n", (double)framesDropped, analysisResult.numDroppedFrames ); + printf(" dropped frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.droppedFramesPosition ); +#endif + + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 ); + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesAdded", framesAdded, analysisResult.numAddedFrames, 1.0 ); + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesDropped", framesDropped, analysisResult.numDroppedFrames, 1.0 ); +// QA_ASSERT_CLOSE( "PaQa_AnalyseRecording glitchPosition", glitchPosition, analysisResult.glitchPosition, cycleSize ); + + PaQa_TerminateRecording( &recording ); + return 0; + +error: + PaQa_TerminateRecording( &recording); + return 1; +} + +/*==========================================================================================*/ +/** + * Test various dropped sample scenarios. + */ +static int TestDetectPhaseErrors( void ) +{ + int result; + + result = TestDetectSinglePhaseError( 44100, 200, 477, -1, 0 ); + if( result < 0 ) return result; +/* + result = TestDetectSinglePhaseError( 44100, 200, 77, -1, 0 ); + if( result < 0 ) return result; + + result = TestDetectSinglePhaseError( 44100, 200, 83, 3712, 9 ); + if( result < 0 ) return result; + + result = TestDetectSinglePhaseError( 44100, 280, 83, 3712, 27 ); + if( result < 0 ) return result; + + result = TestDetectSinglePhaseError( 44100, 200, 234, 3712, -9 ); + if( result < 0 ) return result; + + result = TestDetectSinglePhaseError( 44100, 200, 2091, 8923, -2 ); + if( result < 0 ) return result; + + result = TestDetectSinglePhaseError( 44100, 120, 1782, 5772, -18 ); + if( result < 0 ) return result; + + // Note that if the frequency is too high then it is hard to detect single dropped frames. + result = TestDetectSinglePhaseError( 44100, 200, 500, 4251, -1 ); + if( result < 0 ) return result; +*/ + return 0; +} + +/*==========================================================================================*/ +/** + * Detect one pop in a recording. + */ +static int TestDetectSinglePop( double sampleRate, int cycleSize, int latencyFrames, int popPosition, int popWidth, double popAmplitude ) +{ + int result = 0; + PaQaRecording recording; + PaQaTestTone testTone; + PaQaAnalysisResult analysisResult = { 0.0 }; + int maxFrames = ((int)sampleRate) * 2; + + testTone.samplesPerFrame = 1; + testTone.sampleRate = sampleRate; + testTone.frequency = sampleRate / cycleSize; + testTone.amplitude = 0.5; + testTone.startDelay = latencyFrames; + + result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + MakeRecordingWithPop( &recording, &testTone, popPosition, popWidth, popAmplitude ); + + PaQa_AnalyseRecording( &recording, &testTone, &analysisResult ); + +#if PRINT_REPORTS + printf("\n=== Pop Analysis ===================\n"); + printf(" expected actual\n"); + printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency ); + printf(" popPosition: %10.3f %10.3f\n", (double)popPosition, analysisResult.popPosition ); + printf(" popAmplitude: %10.3f %10.3f\n", popAmplitude, analysisResult.popAmplitude ); + printf(" cycleSize: %6d\n", cycleSize ); + printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames ); + printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition ); + printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames ); + printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition ); +#endif + + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 ); + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popPosition", popPosition, analysisResult.popPosition, 10 ); + if( popWidth > 0 ) + { + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popAmplitude", popAmplitude, analysisResult.popAmplitude, 0.1 * popAmplitude ); + } + + PaQa_TerminateRecording( &recording ); + return 0; + +error: + PaQa_SaveRecordingToWaveFile( &recording, "bad_recording.wav" ); + PaQa_TerminateRecording( &recording); + return 1; +} + +/*==========================================================================================*/ +/** + * Analyse recording with a DC offset. + */ +static int TestSingleInitialSpike( double sampleRate, int stepPosition, int cycleSize, int latencyFrames, double stepAmplitude ) +{ + int i; + int result = 0; + // Account for highpass filter offset. + int expectedLatency = latencyFrames + 1; + PaQaRecording recording; + + PaQaRecording hipassOutput = { 0 }; + BiquadFilter hipassFilter; + + PaQaTestTone testTone; + PaQaAnalysisResult analysisResult = { 0.0 }; + int maxFrames = ((int)sampleRate) * 2; + + testTone.samplesPerFrame = 1; + testTone.sampleRate = sampleRate; + testTone.frequency = sampleRate / cycleSize; + testTone.amplitude = -0.5; + testTone.startDelay = latencyFrames; + + result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + result = PaQa_InitializeRecording( &hipassOutput, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + MakeCleanRecording( &recording, &testTone ); + + // Apply DC step. + for( i=stepPosition; i<recording.numFrames; i++ ) + { + recording.buffer[i] += stepAmplitude; + } + + // Use high pass as a DC blocker! + BiquadFilter_SetupHighPass( &hipassFilter, 10.0 / sampleRate, 0.5 ); + PaQa_FilterRecording( &recording, &hipassOutput, &hipassFilter ); + + testTone.amplitude = 0.5; + PaQa_AnalyseRecording( &hipassOutput, &testTone, &analysisResult ); + +#if PRINT_REPORTS + printf("\n=== InitialSpike Analysis ===================\n"); + printf(" expected actual\n"); + printf(" latency: %10.3f %10.3f\n", (double)expectedLatency, analysisResult.latency ); + printf(" popPosition: %10.3f\n", analysisResult.popPosition ); + printf(" popAmplitude: %10.3f\n", analysisResult.popAmplitude ); + printf(" amplitudeRatio: %10.3f\n", analysisResult.amplitudeRatio ); + printf(" cycleSize: %6d\n", cycleSize ); + printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames ); + printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition ); + printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames ); + printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition ); +#endif + + QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", expectedLatency, analysisResult.latency, 4.0 ); + QA_ASSERT_EQUALS( "PaQa_AnalyseRecording no pop from step", -1, (int) analysisResult.popPosition ); + PaQa_TerminateRecording( &recording ); + PaQa_TerminateRecording( &hipassOutput ); + return 0; + +error: + PaQa_SaveRecordingToWaveFile( &recording, "bad_step_original.wav" ); + PaQa_SaveRecordingToWaveFile( &hipassOutput, "bad_step_hipass.wav" ); + PaQa_TerminateRecording( &recording); + PaQa_TerminateRecording( &hipassOutput ); + return 1; +} + +/*==========================================================================================*/ +/** + * Test various dropped sample scenarios. + */ +static int TestDetectPops( void ) +{ + int result; + + // No pop. + result = TestDetectSinglePop( 44100, 200, 477, -1, 0, 0.0 ); + if( result < 0 ) return result; + + // short pop + result = TestDetectSinglePop( 44100, 300, 810, 3987, 1, 0.5 ); + if( result < 0 ) return result; + + // medium long pop + result = TestDetectSinglePop( 44100, 300, 810, 9876, 5, 0.5 ); + if( result < 0 ) return result; + + // short tiny pop + result = TestDetectSinglePop( 44100, 250, 810, 5672, 1, 0.05 ); + if( result < 0 ) return result; + + + return 0; +} + +/*==========================================================================================*/ +/** + * Test analysis when there is a DC offset step before the sine signal. + */ +static int TestInitialSpike( void ) +{ + int result; + +//( double sampleRate, int stepPosition, int cycleSize, int latencyFrames, double stepAmplitude ) + // No spike. + result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.0 ); + if( result < 0 ) return result; + + // Small spike. + result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.1 ); + if( result < 0 ) return result; + + // short pop like Ross's error. + result = TestSingleInitialSpike( 8000, 32, 42, 2000, 0.1 ); + if( result < 0 ) return result; + + // Medium spike. + result = TestSingleInitialSpike( 44100, 40, 190, 3000, 0.5 ); + if( result < 0 ) return result; + + // Spike near sine. + //result = TestSingleInitialSpike( 44100, 2900, 140, 3000, 0.1 ); + if( result < 0 ) return result; + + + return 0; +} + + +#if TEST_SAVED_WAVE +/*==========================================================================================*/ +/** + * Simple test that writes a sawtooth waveform to a file. + */ +static int TestSavedWave() +{ + int i,j; + WAV_Writer writer; + int result = 0; +#define NUM_SAMPLES (200) + short data[NUM_SAMPLES]; + short saw = 0; + + + result = Audio_WAV_OpenWriter( &writer, "test_sawtooth.wav", 44100, 1 ); + if( result < 0 ) goto error; + + for( i=0; i<15; i++ ) + { + for( j=0; j<NUM_SAMPLES; j++ ) + { + data[j] = saw; + saw += 293; + } + result = Audio_WAV_WriteShorts( &writer, data, NUM_SAMPLES ); + if( result < 0 ) goto error; + } + + result = Audio_WAV_CloseWriter( &writer ); + if( result < 0 ) goto error; + + + return 0; + +error: + printf("ERROR: result = %d\n", result ); + return result; +} +#endif /* TEST_SAVED_WAVE */ + +/*==========================================================================================*/ +/** + * Easy way to generate a sine tone recording. + */ +void PaQa_FillWithSine( PaQaRecording *recording, double sampleRate, double freq, double amp ) +{ + PaQaSineGenerator generator; + float buffer[FRAMES_PER_BLOCK]; + int samplesPerFrame = 1; + int stride = 1; + int done = 0; + + // Setup a sine oscillator. + PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate ); + + done = 0; + while (!done) + { + PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride ); + done = PaQa_WriteRecording( recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame ); + } + +} + +/*==========================================================================================*/ +/** + * Generate a tone then knock it out using a filter. + * Also check using filter slightly off tune to see if some energy gets through. + */ +static int TestNotchFilter( void ) +{ + int result = 0; + PaQaRecording original = { 0 }; + PaQaRecording filtered = { 0 }; + BiquadFilter notchFilter; + double sampleRate = 44100.0; + int maxFrames = ((int)sampleRate) * 1; + + double freq = 234.5; + double amp = 0.5; + + double mag1, mag2, mag3; + + result = PaQa_InitializeRecording( &original, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + PaQa_FillWithSine( &original, sampleRate, freq, amp ); + + //result = PaQa_SaveRecordingToWaveFile( &original, "original.wav" ); + //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result ); + + mag1 = PaQa_CorrelateSine( &original, freq, sampleRate, 0, original.numFrames, NULL ); + QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 ); + + // Filter with exact frequency. + result = PaQa_InitializeRecording( &filtered, maxFrames, (int) sampleRate ); + QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result ); + + BiquadFilter_SetupNotch( ¬chFilter, freq / sampleRate, 0.5 ); + PaQa_FilterRecording( &original, &filtered, ¬chFilter ); + result = PaQa_SaveRecordingToWaveFile( &filtered, "filtered1.wav" ); + QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result ); + + mag2 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL ); + QA_ASSERT_CLOSE( "should eliminate tone", 0.0, mag2, 0.01 ); + + // Filter with mismatched frequency. + BiquadFilter_SetupNotch( ¬chFilter, 1.07 * freq / sampleRate, 2.0 ); + PaQa_FilterRecording( &original, &filtered, ¬chFilter ); + + //result = PaQa_SaveRecordingToWaveFile( &filtered, "badfiltered.wav" ); + //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result ); + + mag3 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL ); + QA_ASSERT_CLOSE( "should eliminate tone", amp*0.26, mag3, 0.01 ); + + + PaQa_TerminateRecording( &original ); + PaQa_TerminateRecording( &filtered ); + return 0; + +error: + PaQa_TerminateRecording( &original); + PaQa_TerminateRecording( &filtered ); + return 1; + +} + +/*==========================================================================================*/ +/** + */ +int PaQa_TestAnalyzer( void ) +{ + int result; + +#if TEST_SAVED_WAVE + // Write a simple wave file. + if ((result = TestSavedWave()) != 0) return result; +#endif /* TEST_SAVED_WAVE */ + + // Generate single tone and verify presence. + if ((result = TestSingleMonoTone()) != 0) return result; + + // Generate prime series of tones and verify presence. + if ((result = TestMixedMonoTones()) != 0) return result; + + // Detect dropped or added samples in a sine wave recording. + if ((result = TestDetectPhaseErrors()) != 0) return result; + + // Test to see if notch filter can knock out the test tone. + if ((result = TestNotchFilter()) != 0) return result; + + // Detect pops that get back in phase. + if ((result = TestDetectPops()) != 0) return result; + + // Test to see if the latency detector can be tricked like it was on Ross' Windows machine. + if ((result = TestInitialSpike()) != 0) return result; + + + return 0; +} |