feat(drums): improve toms

src/samples/drums/tom-high.ts

@@ -1,5 +1,9 @@
-import {playTom1Low} from './tom-low.ts';
+import {triggerTom} from './tom-low.ts';
 
 export function playTom2High(volume = 100) {
-  playTom1Low(120, 400, volume);
+  triggerTom(volume, {
+    frequency: 250,
+    decayTime: 0.3,
+    pitchDecay: 0.15
+  });
 }

src/samples/drums/tom-low.ts

@@ -1,27 +1,56 @@
 import {createAudioContext} from '../sample-utils.ts';
 
-export function playTom1Low(hz = 99, durationInMs = 500, volume = 100) {
-  const audioContext = createAudioContext();
-  // --- 1. Create an oscillator for the base tone ---
-  const oscillator = audioContext.createOscillator();
-  oscillator.type = 'sine'; // Use a sine wave for the base
-  oscillator.frequency.setValueAtTime(hz, audioContext.currentTime); // Lower frequency for a deep tom sound
-
-  // --- 2. Create a gain node for controlling volume ---
-  const gainNode = audioContext.createGain();
-  gainNode.gain.setValueAtTime(volume / 100, audioContext.currentTime); // Increase initial gain for louder sound
-  gainNode.gain.exponentialRampToValueAtTime(0.001, audioContext.currentTime + 0.5); // Quick decay
-
-  // --- 3. Add a slight detuning effect to make the tom sound richer ---
-  oscillator.detune.setValueAtTime(-5, audioContext.currentTime); // Small detuning for realism
-
-  // --- 4. Connect nodes: oscillator -> gain -> output ---
-  oscillator.connect(gainNode);
-  gainNode.connect(audioContext.destination);
-
-  // Start the oscillator
-  oscillator.start();
-
-  // Stop after 0.5 seconds (length of the sound)
-  oscillator.stop(audioContext.currentTime + (durationInMs / 1000));
+const defaults = {
+  frequency: 200,     // Starting frequency
+  decayTime: 0.4,    // How long the sound lasts
+  pitchDecay: 0.2,   // How quickly the pitch drops
+};
+export function triggerTom(volume = 50, settings = defaults) {
+  const context = createAudioContext();
+  const time = context.currentTime;
+  // Convert volume (0-100) to gain (0-1)
+  const maxGain = Math.min(Math.max(volume, 0), 100) / 100;
+  const gainValue = Math.pow(maxGain, 2);
+
+  // Create nodes
+  const osc = context.createOscillator();
+  const gain = context.createGain();
+
+  // Set initial frequency
+  osc.frequency.setValueAtTime(settings.frequency, time);
+
+  // Frequency envelope - faster decay than kick
+  osc.frequency.exponentialRampToValueAtTime(
+    settings.frequency * 0.01,
+    time + settings.pitchDecay
+  );
+
+  // Amplitude envelope
+  gain.gain.setValueAtTime(gainValue, time);
+
+  // Smoother decay for the tom sound
+  gain.gain.exponentialRampToValueAtTime(
+    gainValue * 0.01,
+    time + settings.decayTime - 0.02
+  );
+  gain.gain.linearRampToValueAtTime(
+    0,
+    time + settings.decayTime
+  );
+
+  // Connect nodes
+  osc.connect(gain);
+  gain.connect(context.destination);
+
+  // Start and stop the oscillator
+  osc.start(time);
+  osc.stop(time + settings.decayTime + 0.02);
+}
+
+export function playTom1Low(volume = 100) {
+  triggerTom(volume, {
+    frequency: 140,
+    decayTime: 0.4,
+    pitchDecay: 0.25
+  });
 }