Method, system and apparatus for improving the sonic quality of an audio signal

摘要

A device, system and method of playing back a digital audio stream wherein large amounts of pre-emphasis of the high frequencies is applied before the digital to analog conversion and before an interpolation or digital filter, followed by de-emphasis in the analog domain in order to yield better audio fidelity.

主权项

1. A method of improving sonic quality of an audio signal comprising:
a. receiving the audio signal; b. performing a high frequency emphasis on the audio signal producing an emphasized audio signal; c. interpolating the emphasized audio signal by digitally upsampling the emphasized audio signal; d. converting the emphasized audio signal to analog producing an emphasized analog audio signal; and e. performing a high frequency de-emphasis on the emphasized analog audio signal in the analog domain producing an output audio signal, wherein the de-emphasis is configured to reverse the high frequency emphasis applied to the audio signal, wherein the high frequency de-emphasis uses a de-emphasis curve of more than 11 dB in the analog domain.