Mads Græsbøll Christensen received the M.Sc. and Ph.D. degrees in 2002 and 2005, respectively, from Aalborg University (AAU) in Denmark, where he is also currently employed at the Dept. of Architecture, Design & Media Technology as Professor in Audio Processing and is head and founder of the Audio Analysis Lab. He was formerly with the Dept. of Electronic Systems at AAU and has held visiting positions at Philips Research Labs, ENST, UCSB, and Columbia University. He has published 3 books and more than 190 papers in peer-reviewed conference proceedings and journals, and he has given tutorials at EUSIPCO, INTERSPEECH, and SMC. His research interests include signal processing theory and methods with application to speech and audio, in particular parametric analysis, modeling, enhancement, separation, and coding. Prof. Christensen has received several awards, including the Spar Nord Foundation’s Research Prize, a Danish Independent Research Council Young Researcher’s Award, the StatoilPrize, the EURASIP Early Career Award, and an IEEE Signal Processing Society Young Author Best Paper Award (with D. Giacobello). Moreover, he is a beneficiary of major grants from the Danish Independent Research Council, the Villum Foundation, and Innovation Fund Denmark. He is a former Associate Editor for IEEE/ACM Trans. on Audio, Speech, and Language Processing and IEEE Signal Processing Letters, a member of the IEEE Audio and Acoustic Signal Processing Technical Committee, and a Senior Member of the IEEE.

• Introduction.- What is Sound?.- The Wave Equation.- Digital Audio Signals.- What Are Filters?.- Comb Filters and Periodic Signals.- More About Filters.- The Fourier Transform.- Audio Effects.- Spatial Effects.- Audio Equalizers.- Dynamic Range Control.- Pitch Estimation.- Appendix.- Bibliography.

Mads Græsbøll Christensen received the M.Sc. and Ph.D. degrees in 2002 and 2005, respectively, from Aalborg University (AAU) in Denmark, where he is also currently employed at the Dept. of Architecture, Design & Media Technology as Professor in Audio Processing and is head and founder of the Audio Analysis Lab. He was formerly with the Dept. of Electronic Systems at AAU and has held visiting positions at Philips Research Labs, ENST, UCSB, and Columbia University. He has published 3 books and more than 190 papers in peer-reviewed conference proceedings and journals, and he has given tutorials at EUSIPCO, INTERSPEECH, and SMC. His research interests include signal processing theory and methods with application to speech and audio, in particular parametric analysis, modeling, enhancement, separation, and coding. Prof. Christensen has received several awards, including the Spar Nord Foundation’s Research Prize, a Danish Independent Research Council Young Researcher’s Award, the StatoilPrize, the EURASIP Early Career Award, and an IEEE Signal Processing Society Young Author Best Paper Award (with D. Giacobello). Moreover, he is a beneficiary of major grants from the Danish Independent Research Council, the Villum Foundation, and Innovation Fund Denmark. He is a former Associate Editor for IEEE/ACM Trans. on Audio, Speech, and Language Processing and IEEE Signal Processing Letters, a member of the IEEE Audio and Acoustic Signal Processing Technical Committee, and a Senior Member of the IEEE.

• Introduction.- What is Sound?.- The Wave Equation.- Digital Audio Signals.- What Are Filters?.- Comb Filters and Periodic Signals.- More About Filters.- The Fourier Transform.- Audio Effects.- Spatial Effects.- Audio Equalizers.- Dynamic Range Control.- Pitch Estimation.- Appendix.- Bibliography.

Mads Græsbøll Christensen received the M.Sc. and Ph.D. degrees in 2002 and 2005, respectively, from Aalborg University (AAU) in Denmark, where he is also currently employed at the Dept. of Architecture, Design & Media Technology as Professor in Audio Processing and is head and founder of the Audio Analysis Lab. He was formerly with the Dept. of Electronic Systems at AAU and has held visiting positions at Philips Research Labs, ENST, UCSB, and Columbia University. He has published 3 books and more than 190 papers in peer-reviewed conference proceedings and journals, and he has given tutorials at EUSIPCO, INTERSPEECH, and SMC. His research interests include signal processing theory and methods with application to speech and audio, in particular parametric analysis, modeling, enhancement, separation, and coding. Prof. Christensen has received several awards, including the Spar Nord Foundation’s Research Prize, a Danish Independent Research Council Young Researcher’s Award, the StatoilPrize, the EURASIP Early Career Award, and an IEEE Signal Processing Society Young Author Best Paper Award (with D. Giacobello). Moreover, he is a beneficiary of major grants from the Danish Independent Research Council, the Villum Foundation, and Innovation Fund Denmark. He is a former Associate Editor for IEEE/ACM Trans. on Audio, Speech, and Language Processing and IEEE Signal Processing Letters, a member of the IEEE Audio and Acoustic Signal Processing Technical Committee, and a Senior Member of the IEEE.

• Introduction.- What is Sound?.- The Wave Equation.- Digital Audio Signals.- What Are Filters?.- Comb Filters and Periodic Signals.- More About Filters.- The Fourier Transform.- Audio Effects.- Spatial Effects.- Audio Equalizers.- Dynamic Range Control.- Pitch Estimation.- Appendix.- Bibliography.