1 files changed, 5 insertions, 2 deletions
diff --git a/src/main.rs b/src/main.rs
index 6db2bcf..711463b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,15 +7,18 @@ use synfone::synth::*;
 const FRAMES: usize = 44100 * 2;
 
 fn main() {
-    let mut params = Default::default();
+    let mut params = Parameters::default();
     
     let mut freq: GenBox = Box::new(Param { name: "freq".to_string(), default: 440.0, buf: SampleBuffer::new(1) });
     let mut sg: GenBox = Box::new(Sine { freq: freq, phase: 0.0, buf: SampleBuffer::new(params.env.default_buffer_size) });
 
     let mut counter = 0;
-    let mut out = io::stderr();
+    let mut out = io::stdout();
+    
+    params.vars.insert("freq".to_string(), 440.0);
 
     while counter < FRAMES {
+        *params.vars.get_mut("freq").unwrap() = 440.0 + 440.0 * ((counter as f32) / (FRAMES as f32));
         let buf = sg.eval(&params);
         out.write_all(buf.bytes());
         counter += buf.len();