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Abstract

The present disclosure describes systems and methods for audio signal processing, and more specifically, techniques for automatically generating surround sound by extending stereo signals including a left and right channel to multi-channel formats in an unsupervised and content-independent or content-agnostic manner. In operation, a computing device may receive a stereo audio input signal containing two channels from a sound source. The computing device may transform the stereo audio input signal into an upmixed multi-channel time domain audio signal to create an immersive surround sound listening experience by wrapping the original stereo field to a higher number of speakers in the frequency domain. Based at least on the continuous mapping and the panning coefficient, the computing device may generate the upmixed multi-channel time domain audio signal.

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First Claim