Method playTone

src/ui/NotificationService.ts:345–352

(frequency: number, durationSeconds: number)

			gainNode.connect(audioContext.destination);

			const playTone = (frequency: number, durationSeconds: number) => {
				const oscillator = audioContext.createOscillator();
				oscillator.connect(gainNode);
				oscillator.frequency.value = frequency;
				oscillator.type = "sine";
				oscillator.start();
				oscillator.stop(audioContext.currentTime + durationSeconds);
			};

			playTone(880, 0.12);