Odd-Time Beat Converter

Convert 4/4 to 5/4 or 7/8. Phase Vocoder engine for high-quality stretching.

Odd-Time Beat Converter: Phase Vocoder Time-Stretching

Transform any song into any meter. Deconstruct, reconstruct, and redefine rhythm with the ultimate audio manipulation tool for producers, musicians, and rhythm enthusiasts.

Go beyond simple time-stretching. With Odd-Time Beat Converter, you can surgically redefine the meter and groove of any audio track—perfect for practicing odd meters, creating unique samples, or remixing traditional music.

【Why Choose Odd-Time Beat Converter?】

- Convert 4/4 to 5/4, 7/8, 11/8, and more.

- High-fidelity Phase Vocoder preserves audio quality.

- Precision "n/12" grid system for professional-grade rhythmic warping.

- Create custom swing, shuffle, and Balkan-style grooves effortlessly.

【Detailed User Manual & Visual Guide】

Get the most out of our granular rhythmic engine:

https://docs.google.com/presentation/d/1A9YdffU7zuN-viNiYekvJ_lJz0M1Sva2Xx0t48a5Fu4/edit?usp=sharing

【Key Features】

- Metric Manipulation: Seamlessly convert standard 4-beat tracks into asymmetric odd meters.

- Granular Groove Engine: Adjust the stretch ratio for each individual beat via our unique 1/12 grid.

- Pro-Grade Audio Processing: Powered by Phase Vocoder and SoundTouch (WSOLA) for minimal artifacts even during extreme stretching.

- Flexible Export: Save your creations as high-quality MP3 files.

【How to Use】

1. Load Audio: Import WAV or MP3 files from your device.

2. Select Range: Define the specific section you want to modify on the waveform.

3. Extract Beat: Use Auto-detection or Manual input for bars and time signatures.

4. Configure Ratios: Set your resolution (4th, 8th, or 16th notes) and apply your custom stretch ratios.

5. Export: Render and share your new rhythmic arrangement.

【Innovative Rhythmic Control】

1. Advanced Odd-Time Conversion: Transform 4/4 to 5/4 by stretching specific beats (e.g., 1.5x on beats 1 & 2). Ideal for progressive rock and jazz practice.

2. Precision Groove & Shuffle: Change internal ratios (e.g., 2:1 Downbeat/Upbeat) to create a shuffle feel while maintaining the original BPM.

3. The "n/12" Grid System: A mathematical approach to music. 1.0x = 12/12. Easily dial in triplets (8/12), dotted notes, and micro-grooves with absolute precision.

【Target Users】

- Experimental Producers: Create unique loops by warping the meter of standard samples.

- Jazz & Prog Musicians: Reconstruct tracks into complex odd-meter versions for advanced practice.

- Rhythm Nerds: Explore the mathematical beauty of asymmetric meters and Gankino-style (11/8) rhythms.

Developer's Note:

This app is built for creators who prioritize flexibility over "one-tap" effects. While there is a learning curve, mastering the n/12 ratios gives you total mastery over the meter itself.