diff --git a/examples/cutoff.rs b/examples/cutoff.rs
index b9691b9..e6e2f0e 100644
--- a/examples/cutoff.rs
+++ b/examples/cutoff.rs
@@ -5,16 +5,18 @@ use futures_timer::Delay;
 
 use crossterm::{
     cursor::position,
-    event::{DisableMouseCapture, EnableMouseCapture, Event, EventStream, KeyCode},
+    event::{DisableMouseCapture, EnableMouseCapture, Event, EventStream, KeyCode, KeyEvent},
     execute,
     terminal::{disable_raw_mode, enable_raw_mode},
 };
 
-async fn set_cutoff(cutoff: f64) -> Result<(), reqwest::Error> {
+async fn set_cutoff(cutoff: f64, freq: f64) -> Result<(), reqwest::Error> {
     // Some simple CLI args requirements...
     let url = format!("http://localhost:3000/cutoff");
     let mut map = HashMap::new();
-    map.insert("cutoff", cutoff);
+    map.insert("min_cutoff", cutoff);
+    map.insert("max_cutoff", cutoff + 10.0);
+    map.insert("freq_hz", freq);
     let client = reqwest::Client::new();
     let res = client.post(url).json(&map).send().await?;
 
@@ -38,10 +40,12 @@ async fn print_events() {
     let mut reader = EventStream::new();
     let mut cutoff = 30.0;
     let mut last_cutoff = cutoff;
+    let mut freq = 1.0;
 
     loop {
         let mut delay = Delay::new(Duration::from_millis(1_000)).fuse();
         let mut event = reader.next().fuse();
+        let mut change = false;
         select! {
             _ = delay => {
             },
@@ -55,15 +59,30 @@ async fn print_events() {
                         if event == Event::Key(KeyCode::Esc.into()) {
                             break;
                         }
-                        if event == Event::Key(KeyCode::Char('[').into()) {
-                            cutoff -= 1.0;
+                        if let Event::Key(k) = event {
+                            if let KeyCode::Char(c) = k.code {
+                                change = true;
+                                match c {
+                                    '[' => {
+                                        cutoff -= 1.0;
+                                    }
+                                    ']' => {
+                                        cutoff += 1.0;
+                                    }
+                                    '1' => {
+                                        freq *= 0.9;
+                                    }
+                                    '2' => {
+                                        freq *= 1.1;
+                                    }
+                                    _ => {
+                                        change = false;
+                                    }
+                                }
+                            }
                         }
-                        if event == Event::Key(KeyCode::Char(']').into()) {
-                            cutoff += 1.0;
-                        }
-                        if last_cutoff != cutoff {
-                            set_cutoff(cutoff).await;
-                            last_cutoff = cutoff;
+                        if change {
+                            set_cutoff(cutoff, freq).await.unwrap();
                             println!("cutoff = {}\r", cutoff);
                         }
                     }