![]() First, a minimum filter is applied, which is pretty effective in filtering out short-term gain variations. Think of it like a sliding window approach. The Dynamic Audio Normalizer mostly avoids the "pumping" problem by looking at a certain neighborhood around each frame rather than individual frames. This would be the case, if we simply calculated the maximum possible gain factor for each frame and then applied that gain factor to the frame - which would result in strong and unsteady gain fluctuations. And if that isn't desired, then the Dynamic Audio Normalizer is not the proper tool for whatever you are trying to achieve :)Ĭompressing the audio the traditional way and "compressing it" by increasing the volume of the quiet parts are both susceptible to the same "pumping" problem, where you can hear the volume of background sounds going up and down. It's probably better to think of this as harmonizing the volume of the "quiet" and "loud" sections of the file. And if your input file already contains peaks of maximum signal level in regular intervals, it will be passed trough unmodified. But within each section the full dynamic range is retained. In a certain way, this also is a dynamic range compression, yes. The difference between a "standard" normalizer and the Dynamic Audio Normalizer is that the latter readjusts the gain factor over time, so "quiet" sections of the track can get a stronger amplification than "loud" sections. This means that the maximum gain factor is restricted by the highest magnitude sample. It simply applies a certain gain factor to the samples, but doesn't prune any samples before that. The dynamic range has been reduced significantly.Īt the same time, the Dynamic Audio Normalizer works more like a "standard" normalizer. The results in a much "louder" signal, but the peaks are gone for good. The compressor first "flattens" the signal peaks (by reducing all samples above a predefined threshold), which results in a certain headroom, and then applies a fixed gain in order to bring the signal to the maximum level again. ![]() Since you mention "compression" and "loudness war" I just want to clarify that the Dynamic Audio Normalizer doesn't quite work like a compressor. Good audio tracks have the Dynamic Range than the author want, and compress it is not recommended at all. I think can be applied to some audios bad recorded, but I don't think is for use always. ![]() The author, LoRd_MuldeR, is a moderator in this forum then, maybe, can help you about this. There's another free WinAmp "compressor" DSP here (). I wouldn't normally compress while encoding, but I will give the DynamicAudioNormalizer a spin at some stage. I'm not needing to constantly adjust it as you probably would using standard compression.Īnyway. well my setup is pretty much set and forget. Normalising the way the DynamicAudioNormalizer does it tends to be easier to configure than standard compression though. The more you compress, the more it's likely to happen. I wasn't overly excited about Levelator but it's not designed for soundtrack audio.Ĭompressing the audio the traditional way and "compressing it" by increasing the volume of the quiet parts are both susceptible to the same "pumping" problem, where you can hear the volume of background sounds going up and down. I was comparing the RockSteady plugin to Levelator (). If you're interested, I posted about the way I compress audio on playback in this thread (). If the DynamicAudioNormalizer works as well as the WinAmp RockSteady () plugin, and they seem to work in a similar fashion, it should be a good thing. I'm not a fan of altering/compressing the audio before encoding it (at least not for general soundtrack audio), so I do it on playback instead, but not everyone uses a PC as a media player. It seems to work very much like the WinAmp "compressor" plugin I've been using with ffdshow for years.
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