From 1e48aaaa8518860bc63d02feca5d556b49c919ed Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sun, 15 Nov 2015 18:01:48 +0100
Subject: [PATCH] Reduce the default cutoff a bit; we have no instruments
 below, so better to give the voice a bit extra depth down there. Also fix so
 that the default is set only one place.

---
 mainwindow.cpp   | 2 ++
 mixer.cpp        | 7 ++++---
 ui_mainwindow.ui | 4 ++--
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 34db733..8a91a3f 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -99,6 +99,8 @@ void MainWindow::mixer_created(Mixer *mixer)
 	ui->compressor_threshold_db_display->setText(buf);
 
 	connect(ui->locut_cutoff_knob, &QDial::valueChanged, this, &MainWindow::cutoff_knob_changed);
+	cutoff_knob_changed(ui->locut_cutoff_knob->value());
+
 	connect(ui->limiter_threshold_knob, &QDial::valueChanged, this, &MainWindow::limiter_threshold_knob_changed);
 	connect(ui->compressor_threshold_knob, &QDial::valueChanged, this, &MainWindow::compressor_threshold_knob_changed);
 	connect(ui->limiter_enabled, &QCheckBox::stateChanged, [this](int state){
diff --git a/mixer.cpp b/mixer.cpp
index 239575f..72ae215 100644
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -572,9 +572,10 @@ void Mixer::process_audio_one_frame(int64_t frame_pts_int)
 		}
 	}
 
-	// Cut away everything under 150 Hz; we don't need it for voice,
-	// and it will reduce headroom and confuse the compressor.
-	// (In particular, any hums at 50 or 60 Hz should be dampened.)
+	// Cut away everything under 120 Hz (or whatever the cutoff is);
+	// we don't need it for voice, and it will reduce headroom
+	// and confuse the compressor. (In particular, any hums at 50 or 60 Hz
+	// should be dampened.)
 	locut.render(samples_out.data(), samples_out.size() / 2, locut_cutoff_hz * 2.0 * M_PI / OUTPUT_FREQUENCY, 0.5f);
 
 	// Apply a level compressor to get the general level right.
diff --git a/ui_mainwindow.ui b/ui_mainwindow.ui
index 858771e..db3a368 100644
--- a/ui_mainwindow.ui
+++ b/ui_mainwindow.ui
@@ -480,7 +480,7 @@
            <number>60</number>
           </property>
           <property name="value">
-           <number>29</number>
+           <number>26</number>
           </property>
          </widget>
         </item>
@@ -501,7 +501,7 @@
         <item row="2" column="0">
          <widget class="QLabel" name="locut_cutoff_display">
           <property name="text">
-           <string>150 Hz</string>
+           <string>120 Hz</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignCenter</set>
-- 
2.39.2