6/10/2023 0 Comments Ivolume reviewsIt's also psychoacoustic dilemma: Sound Check adjustments occur in increments of 0.1dB and I don't have the equipment, skill or patience to try to level-match my playback by taking voltage readings of the output, song by song and album by album, with vs. (And if it does it in 24-bit for some reason, I would find that kind of dumb but still not a real concern.)įor the moment I have turned off Sound Check because I can't be sure I don't hear a difference, and I conceptually prefer using just the Oppo 205's volume control, rather than having Sound Check change the volume and then also still using the Oppo as a second volume control if I want to make further adjustments in the volume for whatever reason - a single volume control, and one that I know operates at sufficiently high bit depth (64 in the case of the Oppo), feels preferable to me given my current lack of knowledge about Sound Check's internal bit depth. Now, if Sound Check does the volume adjustment at a 32-bit working depth - which Apple's internal Core Audio is capable of - then I'd have no concerns. Just on principle I'm not happy about getting less-than-16-bit S/N, especially at the "top" of the signal chain where noise and distortion are supposed to be as low as possible (because they will only get amplified as the signal goes down the chain). I know that our hearing is often less sensitive than we like to think, but I still don't like the idea that if I'm playing 16-bit content, Sound Check would be doing the on-the-fly volume adjustment in a 16-bit space (and perhaps maybe undithered?). My concern is about the internal operating bit-depth Sound Check uses when it makes the volume adjustment. So the concern I have with Sound Check has nothing to do with the integrity of the music files themselves, and it has nothing to do with dynamic range or compression. It preserves 100% of the dynamics - and as notes, Sound Check leaves the music file itself untouched. It's normalization - simply an automated and more precise version of what you do when you turn the volume up or down on your preamp, integrated amp, or whatever. I would love to know if or anyone else has done any actual testing of this, and even if not, I'd be grateful if anyone has any clearer knowledge about Sound Check's under-the-hood operation, or a more evidence-backed sense than me of whether or not it's worth even being concerned about it at all.Īs has noted just above, this is not compression like on FM radio. if its 16 bits (when playing/adjusting 16-bit content), that could in some cases be an issue, especially depending on whether not the adjustment uses dither. If it's 24 bits, not ideal but almost certainly inaudible, even when adjusting 24-bit content To my mind - and I am happy to be corrected here - I would say any concerns about Sound Check could therefore be roughly categorized as follows: But while that is a plausible hypothesis, it's far from certain - it also seems possible that the adjustment could be done at the bit depth of whatever music file is being adjusted, in which case redbook files could be adjusted using only 16 bits. Since Sound Check is an adjustment in the master volume control and not the music file, it is plausible to hypothesize that the adjustment is done either at 32 bits, or else at whatever bit depth is set for the output in the Audio MIDI utility. How much does Apple Music's "Sound Check" volume normalization feature degrade noise performance/effective bit depth? gave a nice and very reasonable response, but I was wondering if anyone has actually done any testing or has any specific technical insight: This method is particularly suitable for adjusting gapless live albums.Ĭreate groups to apply individual fine tuned settings to any specified subset of your songs.Īll the features above are fun and incredibly easy to use through a modern and clear user interface.Raised this question in a thread about another, tangentially related topic. Apply changed adjustment settings without the need for re-analyzing your songs.īy using a sophisticated album detection algorithm iVolume optionally adjusts albums as a whole to keep the intention of the artist. IVolume remembers all results ever calculated. IVolume takes advantage of newest technologies to fully utilize every core of modern multiprocessor machines for optimal performance. Most popular audio file formats like MP3, AAC, AIFF and Apple Lossless are supported. IVolume integrates seamlessly with iTunes on Mac and PC, iPod, iPhone, Apple TV, FrontRow and AirTunes. Thereby iVolume gets the most out of the approved Replay Gain algorithm and adjusts your songs according. IVolume calculates the volume perceived by the human ear for each song of your iTunes music collection. IVolume ensures that all your songs play at the same volume level. Tired of constantly adjusting your music's volume?
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