The only kind of tone which will be used is a pure tone.Ī pure tone is a sound with a sinusoidal waveform. The term tone seems to be ambigous, so we rather try to avoid it. It can also carry temporal information like whole notes or half notes, but this is rather uninteresting for us. For example, the well known A 4 is a pitch at 440Hz. This distinction is needed as there are cases where we hear frequencies which are physically not there (or don't hear frequencies which are actually there)!ĭon't worry, we will have a closer look on that subject later.Ī note is just a pitch with a name. Thus, in contrast to frequency which is physical measure, the pitch is a psychoacoustical measure. Pitch is the perceived frequency of a sound.The frequency is defined as the reciprocal of the period duration of an repeating event.įor example, if we have a sinusoidal signal with a period length of 2ms, the frequency is 500Hz.Let's start with some really basic introduction to music theory and guitars.įirst, we have to define some important musical terms as an exact distinction will avoid some ambiguities: The focus of this post lies on understanding the methods we use and what their pros and cons are.įor those who want to code a guitar tuner in under 60 seconds: my Github repo ) We will start with analyzing the problem we have which is probably a detuned guitar and then forward to solving this problem using math and algorithms. (however, I recommend to not use tcl as it is "the best-kept secret in the software industry" and we better keep it a secret, lol). ![]() Of course the algorithms presented in the post are not bound to Python, so feel free to use any other language if you don't mind the addtional translation You just need a computer with a microphone (or an audio interface) and Python. This project is a pure software project, so there is no soldering or tinkering involved. Hello there! In this post we will program a guitar tuner with Python.
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