• IVolume 3.7 Modernized: iVolume was modernized from the ground up and is finally a full 64-Bit application, resulting in overall performance boosts especially when loading very large iTunes libraries. IVolume is fully compatible to Mavericks, Windows 8.1 and the latest iTunes versions.
• Vivotek IVolume e-catalog app for iOS and Android tablet devices complete with comprehensive information on VIVOTEK's full product portfolio and technical documents. IVolume is available for free download on the Apple App Store and Google Play, allowing key information to be viewed on tablet devices anytime anywhere.
• Told you it was a real basic question, but I just want to be sure what I get into - the iVolume web site doesn't really say much. IMac G5, Mac OS X.

When I got my first MP3 player many moons ago—one of those 128MB USB-sticks-with-a-headphone-jack affairs—the thing that drove me crazy was the wildly uneven volume from song to song. Some songs would barely whisper, while others would make my ears bleed. Camera raw 8.6 download mac. Then, after a trip to Amsterdam, I arrived back home sans MP3 player. So I decided to get an iPod: gigs upon gigs worth of storage, and the iTunes/iPod 'Sound Check' feature would forever solve my issues with uneven song volumes. Right? Maybe.

IVolume calculates the volume perceived by the human ear for each song of your Apple Music (formerly known as iTunes) music collection. Thereby iVolume gets the most out of the approved Replay Gain algorithm and adjusts your songs accordingly. Master of the Genius: iVolume is the perfect companion for your Genius Mixes in Apple Music / iTunes.

If iTunes' Sound Check feature (under the Playback pane in the program's preferences) is enabled, iTunes scans all songs in the library to determine their volume. When playing back, loud songs are reduced in volume and quiet ones receive a boost, so the resulting playback volume is constant from song to song. Because the actual volume adjustment happens during playback and Mac OS X internally stores audio as 32-bit floating point values, this doesn't result in a reduction in quality. So far so good. But, Sound Check has three problems.

The first problem is that older versions of iTunes didn't calculate the volumes correctly: AAC-encoded files would consistently be quieter than MP3 files. This seems to have been fixed at some point, but unfortunately, there is no way to reevaluate the volume of songs that have already be scanned, so affected songs remain too quiet.

The second problem is that Sound Check works per song. If you are the proud owner of Pink Floyd's The Wall, have a listen to tracks 12 and 13 of the first CD. Without Sound Check, track 13 is a seamless continuation of track 12. With Sound Check enabled, track 13 is 12dB louder than track 12, which makes for a jarring listening experience.

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Last but not least, there's the loudness war (long text and short video explanations). iTunes seems to scan for the highest peak in a song's volume. That's not a good representation of overall volume. Because older CDs use a lower average volume and use the extra headroom for occasional peaks, and recent CDs tend to stick close to the maximum volume throughout, this means that iTunes will actually reduce the volume for songs ripped from older CDs more than the volume from more recently mastered songs. This effect extends to songs bought from the iTunes Store, Amazon downloads, and so on.

iVolume solves all these problems.

What iVolume does is replace iTunes' idea of what a song's volume is with a value computed using the Replay Gain algorithm. Because Replay Gain ignores the five percent highest peaks, it's not fooled by the difference between older and newer style CD mastering, so all songs actually sound equally loud. However, it does take some time and a little effort to reevaluate song volumes for a sizable iTunes library.

Downloading and installing is easy enough—it's actually running iVolume that can be a bit tricky: although iVolume is standalone program, it acts as an extra window for iTunes. What you do is select a number of songs in iTunes, and then click on 'Adjust' in iVolume's window. iVolume then gets the list of selected songs from iTunes and runs the Replay Gain algorithm over them, listing the original (backup) volume as determined by iTunes, the volume that was in effect for a song until now, and the new value that iVolume wrote into the MP3 or AAC file. iVolume does work on DRM-free AAC files bought from the iTunes Store, but not on protected songs. In the unregistered version, the program will only scan ten songs at a time. The full version costs $15 + sales tax/VAT. I got my registration key within minutes after paying by credit card.

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The program offers a number of options. First of all, there's the choice between single song, manual album, and automatic album modes. To avoid issues with gapless albums (such as The Wall), you need to use one of the album modes. The automatic part doesn't amount to much, as iVolume apparently doesn't learn information about gapless playback from iTunes. There's also 'master volume' that determines the perceived loudness. I got excellent results with the default 92dB: songs that previously lost the battle against traffic noise on my iPod when walking outside now held their own without going into imminent hearing damage territory. iVolume allows you to forget previous volume determinations or even to restore the original values set by iTunes, too.

Unfortunately, it's not possible to run iVolume on files that aren't in the iTunes library. The program also can't write the volume tag into the file itself—it can only modify an existing iTunNORM tag. If the tag isn't there, significant contortions are necessary to get iTunes to add it. Last but not least, the Replay Gain algorithm is a lot slower than what iTunes uses. On a 2.2GHz Core 2 Duo—or Solo—the program doesn't take advantage of multiple CPU cores. As a result, iVolume takes about four seconds to scan a four minute song. And be warned: the change to the volume tag means Time Capsule will back up new copies of all songs touched by iVolume.

If, like me, you find the uneven volumes between different songs in your iTunes library a nuisance, iVolume is well worth the $15 and the work/time to update the song volumes in your library. On the other hand, if you don't mix rips from older CDs with more recent music acquisitions, you can leave Sound Check turned off and you have no need for iVolume. In any event, shame on Apple for only getting this feature half right in the first place.

MQL4 ReferenceTimeseries and Indicators AccessiVolume

Returns Tick Volume value for the bar of specified symbol with timeframe and shift.

long iVolume( stringsymbol, // symbol inttimeframe, // timeframe intshift // shift );

Parameters

symbol

[in] Symbol name. NULL means the current symbol.

timeframe

[in] Timeframe. It can be any of ENUM_TIMEFRAMES enumeration values. 0 means the current chart timeframe.

shift

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[in] Index of the value taken from the indicator buffer (shift relative to the current bar the given amount of periods ago).

Returned value

Tick volume value for the bar of specified symbol with timeframe and shift. If local history is empty (not loaded), function returns 0. To check errors, one has to call the GetLastError() function.

Note

For the current chart, the information about bars tick volumes is in the Volume[] predefined array.

Example:

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Print('Current bar for USDCHF H1: ',iTime('USDCHF',PERIOD_H1,0),', ', iOpen('USDCHF',PERIOD_H1,0),', ', iHigh('USDCHF',PERIOD_H1,0),', ', iLow('USDCHF',PERIOD_H1,0),', ', iClose('USDCHF',PERIOD_H1,0),', ', iVolume('USDCHF',PERIOD_H1,0));

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• iVolume