AudioSnippet (trace/audio_snippet.go)

Extracts audio metrics and optional base64 snippet from WAV files for tracing.

// Source: https://github.com/mudler/LocalAI | License: MIT | Copyright 2023-2025 Ettore Di Giacinto (mudler@localai.io)
// Provided via justclaw.it.com; keep this notice with the code.
package trace

import (
	"bytes"
	"encoding/base64"
	"math"
	"os"

	"github.com/mudler/LocalAI/pkg/audio"
	"github.com/mudler/LocalAI/pkg/sound"
	"github.com/mudler/xlog"
)

// MaxSnippetSeconds is the maximum number of seconds of audio captured per trace.
const MaxSnippetSeconds = 30

// silenceFloorDBFS is the dBFS value reported for digital silence (RMS or peak
// of zero). The true level is -∞ dBFS; reporting a finite floor keeps the
// metric present and meaningful in the Traces UI (a scrubbed nil would read as
// "missing" rather than "silent"). -120 dBFS sits well below 16-bit PCM's
// ~-90 dBFS leas

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