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diff --git a/portaudio/qa/loopback/src/test_audio_analyzer.c b/portaudio/qa/loopback/src/test_audio_analyzer.c
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--- a/portaudio/qa/loopback/src/test_audio_analyzer.c
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-
-/*
- * 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( &notchFilter, freq / sampleRate, 0.5 );
- PaQa_FilterRecording( &original, &filtered, &notchFilter );
- 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( &notchFilter, 1.07 * freq / sampleRate, 2.0 );
- PaQa_FilterRecording( &original, &filtered, &notchFilter );
-
- //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;
-}
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