IOWake - Cognitive Discipline Alarm Clock Showcase

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Cognitive Missions

Silencing an alarm requires solving arithmetic equations, matching emoji memory matrices, or matching visual pattern sequences ("Simon Says").

⏳

Decaying Snooze Penalty

Dynamic penalty engine that shrinks snooze windows with each press (e.g. 10m → 5m → 3m) until complete lockout enforces wakefulness.

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Low-Level PCM Audio

Procedural audio synthesizer using Android AudioTrack API to output non-habituation soundscapes (Digital Beep, Chimes, Laser Siren).

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Sandbox Practice Mode

Built-in mission practice lab allowing users to test puzzle types and difficulty levels directly from the Compose dashboard.


                // Kotlin AudioTrack Procedural PCM Sound Synthesis

                fun generateBeepTone(sampleRate: Int = 44100, freq: Double = 1200.0): AudioTrack {

                  val numSamples = sampleRate * 2

                  val sample = DoubleArray(numSamples) { i -> Math.sin(2.0 * Math.PI * i * freq / sampleRate) }

                  val pcmBuffer = ShortArray(numSamples) { i -> (sample[i] * 32767).toInt().toShort() }

                  return AudioTrack.Builder()

                    .setAudioAttributes(AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_ALARM).build())

                    .setBufferSizeInBytes(pcmBuffer.size * 2)

                    .build().apply { write(pcmBuffer, 0, pcmBuffer.size); play() }

                }

Technical Specifications

Feature	Implementation	Benefit
UI Rendering	Jetpack Compose	High-performance reactive animations
Audio Engine	AudioTrack PCM + Volume Ramping	Non-habituation alerts with zero stress shock
Persistence	Room Database + Kotlin Flow	Real-time reactive alarm state updates
Background Reliability	Foreground Service + AlarmManager	Guaranteed trigger delivery under Doze mode