Surface distortion decomposition for vector controlled source audio-magnetotelluric data

Perceptually controlled doping for audio source separation

The separation of an underdetermined audio mixture can be performed through sparse component analysis (SCA) that relies however on the strong hypothesis that source signals are sparse in some domain. To overcome this difficulty in the case where the original sources are available before the mixing process, the informed source separation (ISS) embeds in the mixture a watermark, which information...

Quantization Considerations for Distortion-Controlled Data Compression

Distortion-controlled data compression is lossy signal compression in which the amount of distortion introduced into any small portion of a signal is strictly limited. This article gives results on various practical aspects of quantization and distortioncontrolled compression. The primary focus is near-lossless compression, as accomplished by predictive techniques. For compression of noisy sign...

Audio Data Fuzzy Fusion for Source Localization

Specific signal processing for high frequency range in Audio - Magnetotelluric

The usual methodology used in magnetotelluric signal processing (MT) has been studied and applied to the case of audio-magnetotellourics (AMT). The results obtained have proved not to be good enough in order to obtain a good subsurface resistivity model. Therefore, some changes have been made to the methodology of signal processing so that it suits audio-magnetotellurics. These changes have app...

Review paper: Instrumentation for marine magnetotelluric and controlled source electromagnetic sounding

We review and describe the electromagnetic transmitters and receivers used to carry out magnetotelluric and controlled source soundings in the marine environment. Academic studies using marine electromagnetic methods started in the 1970s but during the last decade these methods have been used extensively by the offshore hydrocarbon exploration industry. The principal sensors (magnetometers and ...