10 Services from audio.halowerk.com

Converts audio files to FLAC, WAV (16/24-bit), MP3, Opus, or AAC with configurable sample rate, channel count, and quality, while measuring the source's spectral cutoff to detect prior lossy encoding before conversion.

Mixes a voice track over a music bed with automatic ducking — the music volume is pulled down when the voice is detected and restored when it stops.

Classifies a German-language audio recording into one of three regional varieties (de-DE, de-AT, de-CH) using acoustic speech embeddings, returning probabilities and confidence signals.

Detects and shortens silent stretches in audio files using ffmpeg level detection, reducing pauses that exceed a threshold while preserving a configurable minimum floor (default 400ms) to avoid unnatural sentence collisions

Normalises audio loudness to a target LUFS level (default −14 LUFS) using a two-pass measurement-and-correction process, with presets for streaming, podcast, and broadcast standards.

Measures the speaking rate and pause patterns of an audio recording, with optional transcript and segment timings

Estimates the duration of spoken audio for a given text, delivery style, language, and pause settings without generating the audio itself.

Manages sealed-bid audio ad slot auctions: create slots with reserve price and closing time, place bids checked against reserve and publisher rules, and track rejected bids with reasons.

Analyzes an audio recording to extract acoustic evidence metadata including room tone, pause detection, and silence characterization.

Analyzes an audio recording and returns its voice frequency spectrum, with optional per-frequency power data at 128 probe points for plotting.