overtone/overtone
Overtone
Overtone 是一个 Lisp 音频合成库，提供了一个用于设计合成器和生成实时音频的可编程环境。它作为现场声音编程的数字信号处理框架，集成了用于从远程仓库检索和缓存声音的音频样本管理器，以及用于创作旋律和节奏结构的音乐序列生成器。
该项目通过其专门的硬件和网络接口脱颖而出，具有用于路由 MIDI 数据和在软件与外部硬件之间交换 Open Sound Control 消息的专用系统。它还包括用于算法音乐创作的工具，例如欧几里得节奏生成以及定义音阶和和弦的函数。
该框架涵盖了广泛的能力面，包括具有节点路由和自定义包络设计的数字音频信号处理。它提供了用于音频事件同步、定时排序的系统，以及将音频输出与图形库和着色器环境进行音画同步的能力。其他实用程序包括音高和和弦分析，以及音频和控制总线值的实时监控。
Features
- Live Synthesis Controls - Offers a programmable Lisp environment for designing and modifying synthesizers in real time while audio is playing.
- Audio Synthesis Tools - Offers a programmable Lisp environment for designing custom synthesizers and generating real-time audio signals.
- Sound Synthesis - Provides a programmable environment for designing synthesizers and generating real-time audio.
- Algorithmic Music Composition - Generates rhythmic patterns, scales, and chords using mathematical models and music theory functions.
- Stream Event Synchronizers - Utilizes a global event stream to synchronize and distribute timing and control data across the musical system.
- Audio Digital Signal Processing - Provides a digital signal processing framework for building complex audio chains with oscillators and filters.
- Audio I/O Management - Provides a system for handling audio buffers, file playback, and MIDI communication to capture or trigger sounds.
- Global Timing Synchronization - Coordinates audio triggers and control changes using a unified stream to maintain timing across the system.
- Algorithmic Pattern Generators - Provides tools for creating musical sequences using mathematical algorithms such as Euclidean rhythms.
- MIDI Hardware Integration - Connects and routes signals from physical MIDI controllers to software synthesis parameters.
- MIDI and OSC Interfaces - Implements a dedicated system for routing MIDI data and exchanging Open Sound Control messages between software and hardware.
- OSC Message Exchanges - Exchanges Open Sound Control messages over a network to coordinate communication between software and hardware.
- Synthesis Buffer Processing - Handles real-time sound generation by manipulating audio buffers through oscillators, filters, and effects chains.
- Real-Time Audio Scripting - Allows modifying synthesizers, effects, and generators in real time without interrupting audio playback.
- Audio Node Trees - Organizes synthesis nodes into a tree structure to determine signal flow and execution order.
- Audio Sample Managers - Manages the retrieval and local organization of audio samples from remote web services.
- Complex Envelope Generators - Defines complex signal envelopes using various shapes and curve lists to control pitch and timbre.
- External MIDI Controller Mappings - Binds physical MIDI controller signals to specific internal synthesis parameters.
- Musical Sequence Generators - Includes a toolkit for composing melodic structures and rhythmic patterns using scales and arpeggiators.
- Parameter Modulation - Allows dynamic adjustment of synthesis model attributes using external control signals and bus values.
- Melodic and Rhythmic Composition - Enables the creation of melodic and rhythmic patterns using scales, chords, and swing-supported arpeggiators.
- Musical Event Synchronization - Manages timing and metronomes to coordinate live-programmed sequences and audio triggers.
- Music Theory Definitions - Ships a library of functions for defining the musical structures of scales, chords, and rhythms.
- Parameter Controls - Links control bus values directly to synthesis parameters for dynamic modulation of sound properties.
- Time-Based Event Scheduling - Provides a precise timing system and metronome for coordinating audio event sequences.
- Music Programming - Toolkit for designing synthesizers and collaborative music.
