Crate zk_audio 

zk-audio

A Rust library for real-time audio capture, voice enhancement, and microphone simulation.

Features

• Native Audio Capture - CPAL-based cross-platform audio input
• Voice Enhancement Pipeline - 19 DSP processor stages for professional voice quality
• Microphone Simulation - Emulate classic microphones (Neumann U87, Shure SM7B, etc.)
• Profile-Based Processing - Pre-configured profiles for different environments
• WAV Output - Built-in WAV encoding

Quick Start

use zk_audio::{AudioProfile, NativeCaptureBackend, CaptureBackend};
use std::path::PathBuf;

let config = zk_audio::NativeCaptureConfig::new(
    PathBuf::from("recording.wav"),
    AudioProfile::VoiceClean,
);

let backend = NativeCaptureBackend::new();
let mut recording = backend.start(config).unwrap();
// ... recording happens here ...
let diagnostics = recording.stop().unwrap();

Audio Profiles

• AudioProfile::Raw - No processing, for reference recordings
• AudioProfile::VoiceClean - Light processing for quiet environments
• AudioProfile::VoiceNoisyRoom - Moderate noise reduction
• AudioProfile::VoiceHvac - Aggressive HVAC noise suppression

Platform Support

Currently supports Linux via PipeWire/PulseAudio. macOS and Windows are planned.

Feature Flags

• native-capture (default) - Enables CPAL-based native audio capture

Re-exports

pub use builder::NativePipelineBuilder;

pub use builder::PipelineBuildRequest;

pub use contracts::AudioProcessor;

pub use contracts::AudioSink;

pub use contracts::CaptureBackend;

pub use contracts::DeviceEnumerator;

pub use contracts::MetricsCollector;

pub use contracts::ProcessorBuildRequest;

pub use contracts::ProcessorFactory;

pub use core::ActiveListening;

pub use core::ActiveRecording;

pub use core::AudioProfile;

pub use core::CaptureDiagnostics;

pub use core::DelayEffectConfig;

pub use core::DelayEffectPreset;

pub use core::NativeCaptureConfig;

pub use core::ProcessorOverrideMode;

pub use core::SUPPORTED_AUDIO_PROFILES;

pub use core::SUPPORTED_DELAY_EFFECT_PRESETS;

pub use factory::ProfileProcessorFactory;

pub use mic_sim::MicrophoneSimConfig;

pub use mic_sim::MicrophoneSimModel;

pub use mic_sim::MicrophoneSimulatorFactory;

pub use mic_sim::SUPPORTED_MICROPHONE_SIM_MODELS;

pub use native::NativeCaptureBackend;

pub use native::list_input_devices;

pub use native::set_default_input_device;

pub use profiles::ProcessorStage;

pub use profiles::SUPPORTED_PROCESSOR_STAGES;

pub use types::AudioBlock;

pub use types::ProcessContext;

pub use types::ProcessorInfo;

pub use types::SinkReport;

Modules

builder

contracts

core

Core types for audio processing configuration.

factory

metrics

mic_sim

native

pipeline

processors

profiles

runtime_stats

types