Get (audiofilter/filter.go)

Go library for building chains of audio filters with sample-rate conversion.

// Source: https://github.com/VoiceBlender/voiceblender | License: MIT | Copyright 2026 Messageroute Ltd
// Provided via justclaw.it.com; keep this notice with the code.
// Package audiofilter provides an ordered chain of per-leg audio processing
// stages. The chain owns sample-rate conversion and block framing so that
// stages see only whole frames at one rate, and so audio is resampled once
// regardless of how many stages run.
package audiofilter

import (
	"fmt"
	"sort"
	"strconv"
	"strings"
)

// MaxChainLength bounds a configured chain. Filters run inside a leg's read
// goroutine against a real-time budget, so an unbounded chain is a denial of
// service on that leg's audio.
const MaxChainLength = 4

// Stage transforms one frame of mono s16 PCM in place, at the chain's working
//

... (truncated -- full source via MCP)