Virtual bass system by exploiting the rhythmic contents in music
Siby Charley Pulikottil · 2015
Current breed of low to mid end speakers and earphones are unable to recreate the bass frequency range satisfactorily. Bass enhancement using the psychoacoustic principle of missing fundamental is particularly suitable for such scenarios. Traditionally there are two techniques employed for this such as Non Linear Devices (NLD) and Phase Vocoders (PV). However each one comes with its own set of cons namely higher distortion in NLD and transient smearing in PV respectively. With the proposed approach we are trying to create a Virtual bass system that can leverage the rhythmic information that is normally associated with the lower frequency region of a music signal. By applying the proposed approach the intermodulation distortion can be greatly reduced (~ 56%) without affecting the bass quality.