arctan-vi 0.8.0

Arctan Voice Isolation for voice agents

Arctan Voice Isolation SDK

Arctan Voice Isolation is a native Rust SDK with Python bindings for realtime speech enhancement. Authentication, encrypted model delivery, inference, telemetry, and processor lifecycle are implemented in Rust. The Python package contains a small public facade over the private PyO3 extension.

Install

pip install arctan-vi

Set ARCTAN_SDK_KEY, or pass license_key= when constructing a model or processor. Version 0.8.0 supports CPython 3.10-3.14 on Linux x86_64 with glibc 2.28 or newer, macOS arm64, and Windows x64.

Process audio

import numpy as np

from arctan import Processor, ProcessorConfig

processor = Processor(
    config=ProcessorConfig(sample_rate=16_000, num_channels=1),
)
audio = np.zeros((1, 160), dtype=np.float32)
enhanced = processor.process(audio)
processor.close()

Share one Model across processors for concurrent streams. Calls to a single processor remain ordered; separate processors execute concurrently.

from arctan import Model, Processor, ProcessorConfig

model = Model()
config = ProcessorConfig(sample_rate=48_000, num_channels=1)
left = Processor(model, config=config)
right = Processor(model, config=config)

The public core imports remain:

from arctan import Model, Processor, ProcessorAsync, ProcessorConfig

Framework adapters

Adapters are version-matched companion wheels installed through extras:

pip install "arctan-vi[livekit]"
pip install "arctan-vi[pipecat]"

The 0.7.2 import paths remain supported:

from arctan.livekit import arctan_enhancer
from arctan.pipecat import arctan_enhancer

Direct imports are also available:

from arctan.livekit.arctan_enhancer import ArctanNoiseCanceller, noise_canceller
from arctan.pipecat.arctan_enhancer import ArctanAudioFilter

Native integrations

The supported native interface is the versioned arctan_core_* C ABI in crates/arctan-c-api/arctan_core.h. The old standalone libarctan_nc and arctan_vi_* ABI are not part of the 0.8 release.

Development

• Architecture
• Development and testing
• Release process
• Runtime tensor contract
• Changelog