System and method for enhancing delivered sound in acoustical virtual reality

Abstract

Techniques and systems for enhancing delivered audio signals are disclosed which may be employed in a delivery system at a server side, a client side, or both. The techniques include forming a processed audio signal by processing audio signals through multiple pathways which operate on different frequency bands using dynamic processing and other elements, and thereafter providing recording or listening environment enhancements and other sound enhancements to the processed audio signal. Also disclosed are techniques and systems for implementing the multi-pathway processing and environmental and sound enhancements.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from the following U.S. Provisional Applications: U.S. Provisional Application Serial No. 60 / 386541, filed June 5, 2002, entitled "Advanced Technique for Enhancing Delivered Sound" and 2003 A US provisional application entitled "Acoustic Virtual Reality Engine" (Acoustic Virtual Reality Engine) submitted by United States Express Mail (registered label EV331871310US) on May 20, 2009. technical field [0003] The present invention relates to advanced processing techniques for enhancing transmitted audio signals such as music transmitted over limited bandwidth connections, and more particularly to processes that create a live performance feel for listeners listening to digital recordings from arbitrary data sources technology. Background technique [0004] The rapid expansion of the Internet has led to the rapid development of newer and more efficient ways to utilize its communication tec...

AI Technical Summary

Problems solved by technology

Both applications share a common problem: their utility suffers when the bandwidth of the connection to the Internet is limited

[0013] While helpful for creating special effects on individual tracks before combining them into stereo, the high-frequency boost ("exciter") process is detrimental to the fundamental frequency of instrument solos and vocals and the overall balance of the stereo field, Therefore, it cannot be used as a professional-quality stereo control tool

Further compression or downsampling of musical waveforms can lead to unpredictable side effects when distorted or phase shifted signals are added before the signal density is reduced

Loudness curve schemes are effective at low listening levels, but can sharpen the mix at moderate or high listening levels, leading to listener fatigue and dissatisfaction