simplify

src/main.rs

@@ -9,6 +9,7 @@ use tracing::{debug, error, info, level_filters::LevelFilter};
 use tracing_subscriber::EnvFilter;
 
 const INITIAL_LATENCY: std::time::Duration = std::time::Duration::from_millis(1000);
+const BUFFER_SIZE: usize = 550;
 
 #[derive(Parser, Debug)]
 #[command(version, about = "sidetone", long_about = None)]
@@ -80,10 +81,9 @@ fn main() -> anyhow::Result<()> {
     if input_config.sample_rate.0 != output_config.sample_rate.0 {
         anyhow::bail!("The sampling frequency of the input device must be the same as the sampling frequency of the output device");
     }
-    let latency_frames =
-        (INITIAL_LATENCY.as_millis() as f32 / 1_000.0) * input_config.sample_rate.0 as f32;
+    let latency_frames = (INITIAL_LATENCY.as_secs() as f32) * input_config.sample_rate.0 as f32;
     let latency_samples = latency_frames as usize * input_config.channels as usize;
-    let (sender, receiver) = sync_channel(550);
+    let (sender, receiver) = sync_channel(BUFFER_SIZE);
 
     for _ in 0..latency_samples {
         sender.try_send(0.0).ok();