From 2d4f9323c6e8cadbe8171b36a0d27f41485437d3 Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Sat, 21 Jan 2023 21:18:06 -0500
Subject: Fix buffering issue

---
 lambeat.scm | 14 ++++-----
 lib.scm     |  8 +++++-
 music.scm   | 95 +++++++++++++++++--------------------------------------------
 3 files changed, 39 insertions(+), 78 deletions(-)

diff --git a/lambeat.scm b/lambeat.scm
index 10b08b5..c6b506b 100644
--- a/lambeat.scm
+++ b/lambeat.scm
@@ -2,18 +2,16 @@
 (include "music.scm")
 
 ; Bitrate is the number time to sample the music function each second
-(define bitrate 8000)
+(define bitrate 44100)
 
 ; Get the music as a list sampled at the bitrate
 (define (play t end)
-	(cons (music t)
+	(cons ((lambda (a)
+		(let ((b (modulo (inexact->exact (round (* (+ a 2) 32768))) 65536))) cons
+			(put-u8 (current-output-port) (modulo b 256))
+			(put-u8 (current-output-port) (quotient b 256)))) (music t))
 		(if (< t end)
 			(play (+ t (/ 1 bitrate)) end)
 			'())))
 
-; Output the list in the s16 raw audio format
-(for-each (lambda (a)
-	(let ((b (modulo (inexact->exact (round (* (+ a 2) 32768))) 65536))) cons
-		(put-u8 (current-output-port) (modulo b 256))
-		(put-u8 (current-output-port) (quotient b 256))))
-	(play 0 16))
+(play 0 100)
diff --git a/lib.scm b/lib.scm
index f0f9c6a..0038c58 100644
--- a/lib.scm
+++ b/lib.scm
@@ -5,12 +5,18 @@
 			(- (* 4 m) 1)
 			(- 3 (* 4 m)))))
 
+; Square wave with a period of 1 second
+(define (square t)
+	(let ((m (floor-remainder t 1)))
+		(if (< m 0.5) 1 -1)))
+
 ; Creates a note
 (define (note freq start len)
 	(lambda (t) (
 		if (or (< t start) (>= t (+ start len)))
 			0
-			freq)))
+			(* 1/4 (tri (* 1.5 t freq))))))
+;
 
 ; Gets the frequency of a particular pitch
 (define (getfreq octave pitch)
diff --git a/music.scm b/music.scm
index 51b948d..3680c2a 100644
--- a/music.scm
+++ b/music.scm
@@ -1,75 +1,32 @@
 (include "lib.scm")
 
-; https://musiclab.chromeexperiments.com/Song-Maker/song/5761928473608192
-; https://musiclab.chromeexperiments.com/Song-Maker/song/6414430911070208
-(define (melody t)
-	(apply + (map (lambda (x)
-	(apply (lambda (octave pitch start len) ((note (getfreq octave pitch) start len) (- t 32))) x))
-		'(
-			; (2 5 0 1/4)
-			; (3 0 1 1/2)
-			; (2 8 3 1/4)
-			; (2 7 4 1/2)
-			; (2 5 6 1/4)
-			; (3 1 7 1/4)
-			; (3 0 8 1/4)
-
-			; (2 5 0 4)
-			; (3 0 8 4)
-			; (2 3 18 1)
-			; (2 10 20 1)
-			; (3 0 22 1)
-			; (3 1 24 1)
-			; (3 0 26 1)
-			; (2 10 27 1)
-			; (2 5 28 1)
-			; (3 0 30 1)
-			; (2 5 32 4)
-			; (3 0 38 4)
-			; (2 3 42 1)
-			; (3 1 44 1)
-			; (3 1 48 1)
-			; (2 10 49 1)
-			; (3 0 50 1)
-			; (3 1 51 1)
-			; (2 10 52 1)
-			; (2 8 53 1)
-			; (2 10 54 1)
-			; (3 0 56 1)
-			; (3 1 58 1)
-			; (3 0 60 1)
-			; (2 8 62 1)
-			(2 5 1 2)
-			(3 0 7 2)
-			(2 10 15 2)
-			(3 1 19 2)
-			(3 0 21 2)
-			(2 10 29 1)
-			(3 0 30 2)
-		))))
-
-(define (base t)
+(define (music t)
 	(apply + (map (lambda (x)
 		(apply (lambda (octave pitch start len) ((note (getfreq octave pitch) start len) t)) x))
 		'(
-			(1 5 1 1)
-			(1 8 4 1)
-			(2 5 7 1)
-			(2 0 9 1)
-			(1 10 10 1)
-			(1 8 12 1)
-			(1 7 15 1)
-			(1 8 17 1)
-			(1 7 18 1)
-			(2 3 19 1)
-			(1 8 21 1)
-			(2 0 22 1)
-			(2 3 23 1)
-			(2 5 25 1)
-			(2 5 29 1)
-			(2 0 30 1)
-			(2 3 31 1)))))
+			; opening notes
+			(2	2	0	.1)
+			(2	6	.1	.1)
+			(2	9	.2	.1)
+			(3	1	.3	1.2)
+			(2	0	2	.1)
+			(2	4	2.1	.1)
+			(2	7	2.2	.1)
+			(2	11	2.3	.6)
+			(1	10	3	.1)
+			(2	2	3.1	.1)
+			(2	5	3.2	.1)
+			(2	9	3.3	.6)
+			(1	7	4	.1)
+			(1	11	4.1	.1)
+			(2	2	4.2	.1)
+			(2	6	4.3	4.2)
 
-(define (music t)
-	(+ (* 1/2 (tri (* t (melody (floor-remainder (* t 8) 64)))))
-		(* 1/4 (tri (* t (base (floor-remainder (* t 8) 32)))))))
+			; A melody
+			(2	6	9	2.5)
+			(2	7	11.5	.5)
+			(2	6	12	.5)
+			(2	2	12.5	.5)
+			(2	9	13	1)
+
+		))))
-- 
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