The Auphonic Leveler Batch Processor includes a Identify power line hum and all its partials.Īfterwards the partials are removed as necessary with sharp filters.Īn adaptive High Pass Filter cuts unnecessary and disturbing low frequencies,ĭepending on the context (speech, music or noise). In automatic mode, a classifier decides if and how much noise reduction

Our Noise Reduction algorithms remove broadband background noise in audio files with slowly varying backgrounds.įirst the audio file is segmented in regions with different background noise characteristics, then a noise print is extracted in each region True peak level and ensures compliance with the selected loudness target. Is used to limit the final output signal to the selected maximum The loudness is calculated according to latest broadcast standards ( ITU-R BS.1770)Īnd Auphonic supports loudness targets for television ( EBU R128, ATSC A/85),Ī True Peak Limiter, with 4x oversampling to avoid intersample peaks, Processed files have the same average loudness. Global Loudness Normalization calculates the loudness of your audio andĪpplies a constant gain to reach a defined target level, so that all This algorithm was trained with over three years of audio files from our Web Service and keeps learning and adapting to new data every day. Most suitable for programs, where dialogs/speech is the most prominent content: podcasts, radio, broadcast, lecture and conference recordings, film and videos, screencasts etc.Background segments (noise, wind, breathing, silence etc.) won't be amplified.Music segments are processed with care: the overall loudness will be comparable to speech, but the natural dynamics are not changed as in speech segments.Loudness differences between speakers are corrected and dynamic range compression is applied.Music, background and speech segments are classified.Our Adaptive Leveler analyzes the content of audio files using machine learning techniques and is capable of balancing loudness variations between segments in one file: The following algorithms are included in the Auphonic Leveler Batch Processor:

Use levelator