working sine

core/room.py

@@ -6,7 +6,7 @@ from .soundnode import *
 TAU = 2 * math.pi
 
 def stb(i: int) -> bytes:
-	return i.to_bytes(3, byteorder='big', signed=True)
+	return i.to_bytes(3, byteorder='little', signed=True)
 		
 class Room:
 	
@@ -25,6 +25,8 @@ class Room:
 		self.left_sink = SoundNode('LEFT', self)
 		self.right_sink = SoundNode('RIGHT', self)
 		
+		self.sine_multiplier = TAU / self.sample_rate
+		
 	def set_bit_depth(self, bit_depth):
 		
 		self.bit_depth = bit_depth
@@ -53,7 +55,6 @@ class Room:
 			
 			wav.setnchannels(2)
 			wav.setsampwidth(int(self.bit_depth / 8.0))
-			wav.setsampwidth(3)
 			wav.setframerate(self.sample_rate)
 			
 			frames = []
@@ -63,8 +64,8 @@ class Room:
 			
 			for t in range(start_t, end_t):
 				
-				if t%1000 == 0:
-					print(t)
+				#№if t%1000 == 0:
+				#	print(t)
 				f = self.lowest_freq
 				
 				left_total_amp = 0

core/soundnode.py

@@ -34,12 +34,12 @@ class SoundNode:
 		
 	def amp_at_tick(self, f, t):
 		
-		return self.room.max_amp * self.frequency_max_rel_amp(f, t) * math.sin(TAU * f * t/float(self.room.sample_rate))
+		return self.room.max_amp * self.frequency_max_rel_amp(f, t) * math.sin(self.room.sine_multiplier * f * t)
 		
 	def amp_at_tick_by_air(self, f, t, node):
 		
 		dist = self.distance_to_node(node, t)
 		t = t - ((self.room.speed_of_sound*dist)/float(self.room.sample_rate))
 		
-		return self.room.max_amp * self.frequency_max_rel_amp(f, t) * math.sin(TAU * f * t/float(self.room.sample_rate))
+		return self.room.max_amp * self.frequency_max_rel_amp(f, t) * math.sin(self.room.sine_multiplier * f * t)
 	

test.py

@@ -1,9 +1,10 @@
 from core.room import Room
 from core.soundnode import SoundNode
+import math
 
 R = Room()
 R.left_sink.start_location = (-1, 0, 0)
-R.right_sink.start_location = (2, 0, 0)
+R.right_sink.start_location = (1, 0, 0)
 
 class SineNode(SoundNode):
 	
@@ -15,8 +16,8 @@ class SineNode(SoundNode):
 			
 	def frequency_max_rel_amp(self, f, t):
 		
-		if f == self.freq:
-			return self.volume
+		if (f > self.freq-20) and (f < self.freq+20):
+			return self.volume*0.05*math.sin(f)
 			
 		return 0
 		
@@ -25,4 +26,4 @@ sn = SineNode(440, R)
 R.link_wire(sn, R.left_sink)
 R.link_wire(sn, R.right_sink)
 
-R.record('test5.wav', 0, 2)
+R.record('test5.wav', 0, 6)