Illusion Songs

Illusion Songs is a great collection of auditory illusions demonstrating some of the curious ways that our brains perceive sound through the study of psychoacoustics.  The collection includes Shepard Tones/Risset scales, which appear to be forever increasing in pitch, and various demonstrations of streaming, which shows how our brain collects and groups audio information together.

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How the Brain Locates Audio Targets

A recent study from Duke University has shown how our brains process the location of visual and audio stimuli differently. The write-up of the paper at describes the previous model as a kind of ‘zone defense’, where different neurons in the brain are responsible for a different location in space. Which neurons are firing

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The Fourier (Blog) Series Part 1 – Introducing The DFT

The FFT is one of the backbones of signal processing, allowing us to quickly transform a signal from time-domain to frequency-domain (and vice-versa via the inverse FFT). This allows us to analyze or manipulate the signal such as filtering, noise reduction, pitch detection or correction, time-stretching or even removing elements from the signal. The FFT

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