ardour/livetrax
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relax gain LPF to 25Hz.

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This commit is contained in:
Robin Gareus 2015-04-26 02:31:21 +02:00
parent 1b54b85da0
commit fe7cb07c7f
1 changed files with 3 additions and 3 deletions
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6
libs/ardour/amp.cc
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@ -107,7 +107,7 @@ Amp::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/,
}
const double a = 62.78 / _session.nominal_frame_rate(); // 10 Hz LPF; see Amp::apply_gain for details
const double a = 156.825 / _session.nominal_frame_rate(); // 25 Hz LPF; see Amp::apply_gain for details
double lpf = _current_gain;
for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) {
@ -210,7 +210,7 @@ Amp::apply_gain (BufferSet& bufs, framecnt_t sample_rate, framecnt_t nframes, ga
/* Low pass filter coefficient: 1.0 - e^(-2.0 * π * f / 48000) f in Hz.
* for f << SR, approx a ~= 6.2 * f / SR;
*/
const double a = 62.78 / sample_rate; // 10 Hz LPF
const double a = 156.825 / sample_rate; // 25 Hz LPF
for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) {
Sample* const buffer = i->data();
@ -289,7 +289,7 @@ Amp::apply_gain (AudioBuffer& buf, framecnt_t sample_rate, framecnt_t nframes, g
}
Sample* const buffer = buf.data();
const double a = 62.78 / sample_rate; // 10 Hz LPF, see [other] Amp::apply_gain() above,
const double a = 156.825 / sample_rate; // 25 Hz LPF, see [other] Amp::apply_gain() above for details
double lpf = initial;
for (pframes_t nx = 0; nx < nframes; ++nx) {