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Disable anti-alias filter if SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER is defined

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This commit is contained in:
oparviai 2017-09-07 17:04:02 +00:00
parent 5f8720dae6
commit 80281c8e1b
2 changed files with 19 additions and 1 deletions
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9
README.html
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@ -573,6 +573,13 @@ this corresponds to lowering the pitch by -0.318 semitones:</p>
<hr> <hr>
<h2>5. Change History</h2> <h2>5. Change History</h2>
<h3>5.1. SoundTouch library Change History </h3> <h3>5.1. SoundTouch library Change History </h3>
<p><b>2.0.1pre:</b></p>
<ul>
<li>Disable anti-alias filter when switch
SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER defined because anti-alias
filter cause slight click if the rate change crosses zero during
processing</li>
</ul>
<p><b>2.0:</b></p> <p><b>2.0:</b></p>
<ul> <ul>
<li>Added functions to get initial processing latency, duration ratio between the original input and processed output tracks, and clarified reporting of input/output batch sizes</li> <li>Added functions to get initial processing latency, duration ratio between the original input and processed output tracks, and clarified reporting of input/output batch sizes</li>
@ -855,6 +862,7 @@ submitted bugfixes:</p>
<li> Jason Garland</li> <li> Jason Garland</li>
<li> Takashi Iwai</li> <li> Takashi Iwai</li>
<li> Thomas Klausner</li> <li> Thomas Klausner</li>
<li> Lu Zhihe</li>
<li> Tony Mechelynck </li> <li> Tony Mechelynck </li>
<li> Mathias M&ouml;hl</li> <li> Mathias M&ouml;hl</li>
<li> Yuval Naveh</li> <li> Yuval Naveh</li>
@ -872,6 +880,7 @@ submitted bugfixes:</p>
<li> Tyson Smith</li> <li> Tyson Smith</li>
<li> John Stumpo</li> <li> John Stumpo</li>
<li> Katja Vetter</li> <li> Katja Vetter</li>
<li> Wu Q.</li>
</ul> </ul>
<p>Moral greetings to all other contributors and users also!</p> <p>Moral greetings to all other contributors and users also!</p>
<hr> <hr>

11
source/SoundTouch/RateTransposer.cpp
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@ -57,7 +57,13 @@ TransposerBase::ALGORITHM TransposerBase::algorithm = TransposerBase::CUBIC;
// Constructor // Constructor
RateTransposer::RateTransposer() : FIFOProcessor(&outputBuffer) RateTransposer::RateTransposer() : FIFOProcessor(&outputBuffer)
{ {
bUseAAFilter = true; bUseAAFilter =
#ifndef SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER
true;
#else
// Disable Anti-alias filter if desirable to avoid click at rate change zero value crossover
false;
#endif
// Instantiates the anti-alias filter // Instantiates the anti-alias filter
pAAFilter = new AAFilter(64); pAAFilter = new AAFilter(64);
@ -77,7 +83,10 @@ RateTransposer::~RateTransposer()
/// Enables/disables the anti-alias filter. Zero to disable, nonzero to enable /// Enables/disables the anti-alias filter. Zero to disable, nonzero to enable
void RateTransposer::enableAAFilter(bool newMode) void RateTransposer::enableAAFilter(bool newMode)
{ {
#ifndef SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER
// Disable Anti-alias filter if desirable to avoid click at rate change zero value crossover
bUseAAFilter = newMode; bUseAAFilter = newMode;
#endif
} }