![]() For example, the A note (440 Hz) multiplied by 2 = 880 Hz is also an A note, just one octave above. The A note, for example, corresponds to a frequency of 440 Hz.Īnd where does mathematics come into play here? It has been observed that when a frequency is multiplied by 2, the note remains the same. For each frequency, we have a different sound (a different note). If a sound wave completes 10 oscillations in 1 second, its frequency will be 10 Hz. If a sound wave completes one oscillation in 1 second, its frequency will be 1 Hz. Great, but what does that have to do with sound? Well, sound is a wave, and that wave oscillates with a certain frequency. If this wheel in our example completed 10 revolutions in 1 second, its frequency would be 10 Hertz (10 Hz). Hertz is just a name given to represent the unit of frequency, and is often abbreviated to “Hz”. If this wheel completes one revolution in 1 second, we say that the frequency of that wheel is “one revolution per second”, or “one Hertz”. Very well, in the first topics here in the website, we mentioned that sound is a wave and that the frequency of the sound is what defines the musical note.īut what is frequency? It is a repetition with time reference. This is very interesting, so let go of your prejudices. Maybe you don’t like math, but don’t worry, we will try to explain each concept in a simple way, so that you realize that our sensitivity to sound is linked to the logic of our brains. If you feel you were banned unjustly, or that the circumstances of your ban no longer apply, see our ban appeal process here.Ĭareer and Education Questions - every ThursdayĪ Compilation of Free, Online Math Resources.We decided to build this topic to show you how mathematics is related to music. If you post or comment something breaking the rules, the content may be removed - repeated removal violations may escalate to a ban, but not without some kind of prior warning see here for our policy on warnings and bans. This subreddit is actively moderated to maintain the standards outlined above as such, posts and comments are often removed and redirected to a more appropriate location. Unnecessarily combative or unkind comments may result in an immediate ban. racism, sexism, homophobia, hate speech, etc.). This includes not only comments directed at users of /r/math, but at any person or group of people (e.g. If you upload an image or video, you must explain why it is relevant by posting a comment providing additional information that prompts discussion.ĭo not troll, insult, antagonize, or otherwise harass. Memes and similar content are not permitted. Image/Video posts should be on-topic and should promote discussion. If you are asking for advice on choosing classes or career prospects, please post in the stickied Career & Education Questions thread. Rule 4: No career or education related questions If you ask for help cheating, you will be banned. Do not ask or answer this type of question in /r/math. ![]() Homework problems, practice problems, and similar questions should be directed to /r/learnmath, /r/homeworkhelp or /r/cheatatmathhomework. This includes reference requests - also see our list of free online resources and recommended books. ![]() If you're asking for help learning/understanding something mathematical, post in the Quick Questions thread or /r/learnmath. Requests for calculation or estimation of real-world problems and values are best suited for the Quick Questions thread, /r/askmath or /r/theydidthemath. For example, if you think your question can be answered quickly, you should instead post it in the Quick Questions thread. Questions on /r/math should spark discussion. Rule 2: Questions should spark discussion Please avoid derailing such discussions into general political discussion, and report any comments that do so. In particular, any political discussion on /r/math should be directly related to mathematics - all threads and comments should be about concrete events and how they affect mathematics. All posts and comments should be directly related to mathematics, including topics related to the practice, profession and community of mathematics.Īll posts and comments should be directly related to mathematics, including topics related to the practice, profession and community of mathematics. This subreddit is for discussion of mathematics.
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