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Merge pull request #1617 from FearlessTobi/fix-stretch-delay
time_stretch: Switch to values of Citra
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commit
f1cb425d92
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@ -32,10 +32,10 @@ std::size_t TimeStretcher::Process(const s16* in, std::size_t num_in, s16* out,
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// We were given actual_samples number of samples, and num_samples were requested from us.
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// We were given actual_samples number of samples, and num_samples were requested from us.
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double current_ratio = static_cast<double>(num_in) / static_cast<double>(num_out);
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double current_ratio = static_cast<double>(num_in) / static_cast<double>(num_out);
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const double max_latency = 1.0; // seconds
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const double max_latency = 0.25; // seconds
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const double max_backlog = m_sample_rate * max_latency;
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const double max_backlog = m_sample_rate * max_latency;
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const double backlog_fullness = m_sound_touch.numSamples() / max_backlog;
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const double backlog_fullness = m_sound_touch.numSamples() / max_backlog;
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if (backlog_fullness > 5.0) {
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if (backlog_fullness > 4.0) {
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// Too many samples in backlog: Don't push anymore on
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// Too many samples in backlog: Don't push anymore on
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num_in = 0;
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num_in = 0;
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}
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}
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@ -49,7 +49,7 @@ std::size_t TimeStretcher::Process(const s16* in, std::size_t num_in, s16* out,
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// This low-pass filter smoothes out variance in the calculated stretch ratio.
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// This low-pass filter smoothes out variance in the calculated stretch ratio.
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// The time-scale determines how responsive this filter is.
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// The time-scale determines how responsive this filter is.
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constexpr double lpf_time_scale = 2.0; // seconds
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constexpr double lpf_time_scale = 0.712; // seconds
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const double lpf_gain = 1.0 - std::exp(-time_delta / lpf_time_scale);
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const double lpf_gain = 1.0 - std::exp(-time_delta / lpf_time_scale);
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m_stretch_ratio += lpf_gain * (current_ratio - m_stretch_ratio);
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m_stretch_ratio += lpf_gain * (current_ratio - m_stretch_ratio);
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