Precision Mobile Engineering with Traditional Acoustic Craft.
Independent Android Engineer & Interactive Web Systems Builder.
I am Anlian Coder (Ananda Apriliansyah Cahya Utama), an independent software engineer based in Indonesia. I architect high-performance native Android applications and modern web tools, including Ain E-Mbat—the award-winning acoustic gamelan tuning application.
Anlian Coder
Ananda Apriliansyah Cahya Utama
Independent Software Developer
AIN E-MBAT
Gamelan Tuning for Android
Mobile audio DSP application for calibrating traditional Slendro and Pelog gamelan instruments using real-time smartphone microphone sampling.
AIN E-MBAT
com.anlian.ain.embat.android · Android Audio DSP
A dedicated acoustic calibration tool engineered for Javanese gamelan instruments. Captures real-time audio through smartphone microphones to measure non-equidistant pitch intervals and cents deviations with zero network latency.
Runner-up: BudayaGo 2025
National Cultural Technology Innovation
Native Low-Latency Audio DSP
Unlike Western twelve-tone equal temperament (12-TET), gamelan acoustics do not follow fixed logarithmic semitones. Ain E-Mbat was engineered from scratch on the native Android platform to accommodate traditional Javanese embat (the deliberate micro-tuning stretch unique to each gamelan ensemble).
48kHz Hardware Microphone Ingestion
Direct audio streaming via Android AudioRecord API with low-buffer latency for immediate transient detection upon physical hammer strike.
Autonomous On-Device DSP
Performs pitch detection and partial overtone analysis entirely in local device memory. Operates with zero network dependency in workshops or cultural pavilions.
Zero Telemetry & Absolute Privacy
Zero ads, zero trackers, and zero audio recordings transmitted off-device. Pure engineering built for craftsmen.
com.anlian.ain.embat.androidSlendro vs. Pelog Tonal Systems
Traditional Javanese gamelan employs two distinct, non-overlapping tuning paradigms. Ain E-Mbat includes dedicated algorithms for each system:
Laras Slendro (Pentatonic)
5 Tones / OctaveDivided into five approximately equal steps (~240 cents each). It lacks half-steps (semitones), creating an open, bright, and expansive acoustic resonance.
Laras Pelog (Heptatonic)
7 Tones / OctaveCharacterized by unequal intervals alternating between tight steps (~115-130 cents) and wide leaps (~270-285 cents), enabling expressive modal variations (Pathet).
In Javanese musicology, embat describes the intentional pitch deviation that gives each gamelan set its unique spiritual personality and acoustic shimmer (ombak). Ain E-Mbat preserves this master tuning art.
Acoustic Benchmark Scale Reference
Standard benchmark frequencies and interval characters measured inside the Ain E-Mbat engine.
| Tone | Traditional Name | Syllable | Benchmark Pitch | Interval Step |
|---|---|---|---|---|
| Note 1 | Panunggul / Barang | Ji (1) | 240 Hz | Equidistant ~240 cents |
| Note 2 | Gulu | Ro (2) | 275 Hz | ~240 cents step |
| Note 3 | Dada | Lu (3) | 315 Hz | ~240 cents step |
| Note 5 | Lima | Ma (5) | 360 Hz | ~240 cents step |
| Note 6 | Nem | Nem (6) | 412 Hz | ~240 cents step |
Virtual Metallophone Tuner Simulator
Experience the core analysis engine of Ain E-Mbat. Strike the virtual bronze keys below—or press keys 1 to 6 on your keyboard—to trigger acoustic bronze resonance and inspect the real-time cents deviation needle.
Base fundamental frequency for Slendro. Anchor for pelarasan.
Engineering Capabilities
I deliver direct engineering solutions with an asymmetric focus: flagship native Android systems, supported by modern interactive web tools and domain-specific algorithm consulting.
Native Android Mobile Application Engineering
End-to-end development of native Android applications engineered for performance, reliability, and offline autonomy. From low-level sensor and microphone ingestion to complete Google Play Store publishing workflows.
Proven in the field by Ain E-Mbat (Runner-up at BudayaGo 2025, published on Google Play).
Interactive Web Applications & Simulators
Fast, responsive web tools and experimental simulators built with modern React 19, TypeScript, and clean Web APIs. Designed for direct usability without bloat.
Custom Tooling & Technical Consultation
Translating niche domain challenges (such as non-standard musical scales, sensor processing, or calculation utilities) into practical, reliable software.
About Anlian Coder
Ananda Apriliansyah Cahya Utama · Independent Software Engineer
I am an independent programmer based in Indonesia, specializing in native Android engineering and modern interactive web systems. My engineering practice focuses on crafting software that solves authentic, technically demanding challenges with clean code and minimal overhead.
The creation of Ain E-Mbat stemmed from a practical cultural dilemma: traditional Javanese gamelan instruments produce complex non-harmonic overtones and follow centuries-old tuning systems (embat) that generic Western chromatic tuners cannot evaluate. By combining digital signal processing with low-latency smartphone audio sampling, I built an accessible, offline application that assists gamelan craftsmen and musicians with accurate pitch preservation.
Whether developing native mobile architectures or building interactive browser tools, I adhere to a strict discipline: zero unnecessary telemetry, robust offline resilience, minimal CPU and battery footprint, and direct one-on-one communication with clients.
Acoustic & Sensor Precision
Expertise handling non-standard tuning systems, hardware audio buffer management, and real-time frequency calculations.
Direct Technical Collaboration
No agency middlemen or fragmented communications. You consult directly with the programmer architecting and writing your code.
Runner-up: BudayaGo 2025
Awarded by the Ministry of Culture Republic of Indonesia for pioneering digital cultural preservation through accessible native Android acoustic signal analysis.
Technical Stack & Capability Matrix
| Domain | Technologies & Architecture | Core Deliverable |
|---|---|---|
| Native Android Engineering | Kotlin, Java, Android SDK, Jetpack Compose, View SystemAudioRecord DSP, Low-latency audio buffers, Coroutines concurrency, Room SQLite | Ain E-Mbat (Google Play) |
| Interactive Web & Audio DSP | React 19, TypeScript, Web Audio API, HTML5 CanvasOscilloscope visualization, Harmonic synthesis, Accessible design systems | Gamelan Tuner Simulator |
| Delivery, Privacy & Quality | Google Play Console, Git, Tailwind CSS, ViteZero-telemetry offline architectures, WCAG 2.1 AA/AAA accessibility, CI/CD | BudayaGo 2025 Runner-up |
Start a Project Conversation
Have an Android application, acoustic audio project, or specialized web tool to build? I am available for freelance development and technical consultation worldwide.
Send Project Brief
Prepare your project brief below to open directly in your preferred email client.