From e9591a23885caa12354e291fd3c03ba6ad6c8fcd Mon Sep 17 00:00:00 2001
From: tmont <tommy.mont@gmail.com>
Date: Thu, 7 Aug 2025 11:52:50 -0700
Subject: [PATCH] set volume to half every other note

---
 square_1.php | 48 +++++++++++++++++++++++++++++-------------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/square_1.php b/square_1.php
index 530d5d9..18bf418 100755
--- a/square_1.php
+++ b/square_1.php
@@ -7,43 +7,51 @@ foreach ($c1_data as $i => $arr)
 {
 	//tick delay---------------------------------//
 	$b_arr = array(0);
-	
+
 	//only if previous note was a rest or another voice
 	if ($i > 0 && strcmp($c1_data[$i-1][1],"0") > 0)
 	{
 		$b_ticks = strrev(decbin($ticksSinceLastNote));
 		$b_arr = str_split($b_ticks,7);
-		
+
 		for ($j = 0; $j < count($b_arr); $j++)
 		{
 			if (strlen($b_arr[$j]) < 7)
 				$b_arr[$j] = str_pad($b_arr[$j],7,"0",STR_PAD_RIGHT);
-				
+
 			if ($j > 0)
 				$b_arr[$j][7] = "1";
 			$b_arr[$j] = strrev($b_arr[$j]);
 		}
 	}
 	//--------------------------------------------//
-	
+
 	$ticksSinceLastNote += (1/$arr[3])*960;
 
 	if (strcmp($arr[1],"0") == 0) //play a note (square)
 	{
+		// change volume every other note to half volume
+		$volume = 80;
+		$bin_data[] = 0; // delta
+		$bin_data[] = 176; // controller event, channel 0
+		$bin_data[] = 7; // change volume
+		$bin_data[] = $i % 2 === 0 ? $volume : ($volume / 2); // volume level
+
 		//note on event
 		for ($j = count($b_arr)-1; $j >= 0; $j--)	//tick delay
 			array_push($bin_data,bindec($b_arr[$j]));
-			
+
+
 		array_push($bin_data,144);	//note on, channel 0
 		array_push($bin_data,$note_array['square'][$arr[2]][5]);	//MIDI note index
 		array_push($bin_data,100);	//velocity
-		
+
 		//pitch bend
 		array_push($bin_data,0);	//delta time (immediate bend)
 		array_push($bin_data,224);	//pitch bend, channel 0
 		array_push($bin_data,$note_array['square'][$arr[2]][6]);	//left bits
 		array_push($bin_data,$note_array['square'][$arr[2]][7]);	//right bits
-		
+
 		//tick delay for note off
 		$b_ticks = strrev(decbin((1/$arr[3])*960));
 
@@ -52,20 +60,21 @@ foreach ($c1_data as $i => $arr)
 		{
 			if (strlen($b_arr[$j]) < 7)
 				$b_arr[$j] = str_pad($b_arr[$j],7,"0",STR_PAD_RIGHT);
-				
+
 			if ($j > 0)
 				$b_arr[$j][7] = "1";
 			$b_arr[$j] = strrev($b_arr[$j]);
 		}
-		
+
 		//note off
 		for ($j = count($b_arr)-1; $j >= 0; $j--)	//tick delay
 			array_push($bin_data,bindec($b_arr[$j]));
-			
+
+
 		array_push($bin_data,128);	//note off, channel 0
 		array_push($bin_data,$note_array['square'][$arr[2]][5]);
 		array_push($bin_data,100);	//velocity of release
-		
+
 		$ticksSinceLastNote = 0;
 	}
 }
@@ -85,10 +94,10 @@ $byte3 = hexdec(substr($h,4,2));
 $byte2 = hexdec(substr($h,2,2));
 $byte1 = hexdec(substr($h,0,2));
 
-fwrite($filehandle,pack("I",$byte1),1);	
-fwrite($filehandle,pack("I",$byte2),1);	
-fwrite($filehandle,pack("I",$byte3),1);	
-fwrite($filehandle,pack("I",$byte4),1); 			
+fwrite($filehandle,pack("I",$byte1),1);
+fwrite($filehandle,pack("I",$byte2),1);
+fwrite($filehandle,pack("I",$byte3),1);
+fwrite($filehandle,pack("I",$byte4),1);
 
 //change to square voice
 fwrite($filehandle,pack("I",0),1);		//delta time
@@ -101,13 +110,14 @@ fwrite($filehandle,pack("I",176),1);	//controller event, channel 0
 fwrite($filehandle,pack("I",7),1);		//change volume
 fwrite($filehandle,pack("I",80),1);		//volume level
 
-foreach ($bin_data as $val)
-	fwrite($filehandle,pack("I",$val),1);	
+foreach ($bin_data as $val) {
+	fwrite($filehandle, pack("I", $val), 1);
+}
 
 //End track
-fwrite($filehandle,pack("I",0),1);	
+fwrite($filehandle,pack("I",0),1);
 fwrite($filehandle,pack("I",255),1);
 fwrite($filehandle,pack("I",47),1);
 fwrite($filehandle,pack("I",0),1);
 //END TRACK 2 DATA
-?>
\ No newline at end of file
+?>