Digital compensation of distortion in audio systems

• Main Authors: Bengtsson, Fredrik, Berglund, Rikard
• Format: Others
• Language: English
• Published: Linköpings universitet, Institutionen för systemteknik 2010
• Subjects: Distortion; Digital Compensation; Signal Processing; Digital Filters; Audio Systems; Amplifiers; Modelling; Audio Compressor; Audio Limiter; Electrical engineering; Elektroteknik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56392

The advancements of computational power in low cost FPGAs are giving the opportunityto implement real-time compensation of loudspeakers and audio systems. The need for expensive commercial audio systems is reduced when the fidelity ofmuch cheaper audio systems easily can be improved by real-time compensation. The topic of this thesis is to investigate and evaluate methods for digital compensationof distortion in audio systems. More specifically, a VHDL module isimplemented to, when necessary, alleviate the problem of drastically deterioratingfidelity of the bass appearing when the input power is too high.