![]() ![]() That is: When you apply Sound Check to your iTunes Library, playing the resulting files in Winamp does not produce a constant average volume level among the recordings. Nor does iTunes understand Winamp Replay Gain. Players that do Sound Check Generally do Not Do Replay Gain and Vice VersaĪlso, Winamp does not understand iTunes Sound Check currently. While the audio purist may cringe at the reductions in realism that Replay Gain and Sound Check can have, for the average portable media player listener, these volume regulators really do save the ears. Plus, with very quiet recordings, where the loudest parts aren’t in fact very loud, the quiet parts receive a boost, making them more intelligible. Both Offer More Constant Average Music Volumeīut on the up side: The average volume level of all your music, when playing it in Winamp or iTunes, should be more constant than it is with these volume regulating mechanisms disabled, Loud passages won’t blast you as much when you turn these features on. Lower it excessively, and you too-far dwarf the peaks and may in fact mask out the quieter content. Raise the volume too much, and you end up making the quiet parts of the song too noisy and distorting the loud peaks too much. Both Winamp Replay Gain and iTunes Sound Check suffer from this side effect, particularly whe low to medium level sound equipment is used, with its limited dynamic range capabilities. This can reduce the dynamic range if the loud peaks in the recording, as a result of this volume raising, are clipped, as happens on purpose in the iPod’s built-in volume limiter.įurther, when the overall volume is lowered, the volume of the entire recording is lowered, including its loudest parts, which again, reduces dynamic range that range being the difference in DB levels between the loudest and softest parts of the recording. When volume goes up, this also raises the noise floor (equipment hiss, hum, and digital conversion noises). However, some limiting typically results nonetheless, when the system changes the overall music volume. ![]() Neither of these software-based volume controls is intended to limit the dynamic range of an audio recording per se. This means that even with either system enabled, you’ll still have very loud as well as very soft parts in the song. This means that neither iTunes Sound Check nor Winamp Replay Gain readjusts the volume in response to loud or soft peaks in the song, while its playing. Just once, unlike compression, which makes constant readjustments. Both systems set the volume level the same way. ![]() This differs from dynamic, ongoing volume tweaks done during play as happens in on-the-fly compression. Both actually find what the overall volume setting of the song should be before it plays. ![]() Neither Sound Check nor Replay Gain compress the audio. Sound Check vs Replay Gain: What the Have in Common Neither Compress an Audio Rcording Thus all songs play at about the same loudness. Both systems raise the volume on very quiet songs. Nonetheless, we find that with either system, we must adjust the volume far less when the next song plays. Thus, the objective of both Sound Check and Replay Gain is the same.Įach method suffers various pros and cons. This reduces the differences in volumes as one recording ends and the next one begins. The two automatic volume control mechanisms help ensure that the recordings in your audio library play at roughly the same average volume. Sound Check vs Replay Gain Introduction What is Sound Check? What is Replay Gain? In this piece, we discuss Sound Check vs Replay Gain. Sound Check in iTunes and iPods is about the same as Winamp’s Replay Gain feature. ![]()
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