![]() ![]() ![]() And if you don't use online services for any task, analysis speed only depends on your personal hardware and some settings. Additionally, you get to choose which algorithm beaTunes will use ( OnsetPeak is the more modern algorithm). Assuming you know what general tempo your music is in, this can help you to avoid the octave error. If you decide not to use online resources, you can force beaTunes to calculate a BPM value in a certain range, e.g. And when you're online, analysis speed depends on your Internet connection's bandwidth and the general load on the database server. Plus, you cannot use this feature when you are offline. There is no way to increase the octave accuracy via tweaks. But the fact remains: you give up control over the largest error source. This is not all bad-the database uses some fancy heuristics to ignore bad values and attempts to pick the "right" ones. Doing so, you give up any control over the BPM range (or octave) as well as the used algorithm. ![]() When downloading values from the database, you are downloading values computed or entered by other beaTunes users. This so called octave error is the biggest problem in automatic BPM detection. While accuracy differs depending on genre, overall state-of-the-art BPM analysis is currently roughly 74% accurate-94%, if you are willing to tolerate x2 and x0.5 errors. Let's take the BPM analysis as an example. To trigger this download-first-behavior, you must check the box Use online resources in the analysis options dialog-that's the dialog that pops up, when you click on Analyze (see screenshot below). If the value cannot be found, beaTunes falls back on its built-in algorithm. For most analysis tasks, beaTunes offers to simply download the desired value instead of computing it. ![]()
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