ReplayGain

[Pepsican]

(12-06-2016 23:45)Servatius Wrote:  For me as a listener of classical music it is not an issue to adjust the loudness once when I start listening to a long musical work with multiple movements. The variance in album gain values is not so big either. But pop music suffered from extreme compression due to the loudness war in the last two decades so that a collector of pop music may have quieter CDs from the 80s and much louder CDs bought more recently. It must be very annoying to change loudness all the time. For them, honouring ReplayGain in the transcoding process would be an important feature.

Thank you for seeing my problem :-)

(12-06-2016 23:45)Servatius Wrote:  Simon, in case you decide to support this, I would have a question about effects of the ReplayGain processing on the sound quality: would it be possible to do the signal processing in high resolution (24 bit), at least when choosing a hires output format? And what about a DTS stream? Could they be processed without transcoding to PCM?

I'd also expect to have the transcoding done first in case of upsampling and then apply replay gain (Like Illustrate's AgentUPnP does - but I would apply the reverse order in case of downsampling I think). But I'm not sure what transcoding does to the metadata. Replay_gain, I believe, is not a tag universaly supported across all tagging standards. So, you may transcode and then lose the Replay_gain tag. If so, the correct order would be to collect that information first, then transcode, then level output.