Surround headphone output signal generator
AssigneesPioneer Corporation, Tohoku Pioneer Corporation
InventorKoichi Sato
Life of this patent
Estimating the term…
Abstract
In a surround headphone output signal generator for generating multichannel sound signals from digital audio data, and combining the sound signals for the respective channels to generate two-channel surround headphone output signals for outputting to headphones, a DIR 10 detects from the digital audio data a sampling frequency (FS) included in the digital audio data concerned. A microcomputer 13 selects an attenuation coefficient α1 or α2 in accordance with the sampling frequency (FS) detected by the DIR 10, and attenuates the levels of surround headphone output signals Lo and Ro on the basis of the selected attenuation coefficient α1 or α2.
Claims5
A surround headphone output signal generator for generating multichannel sound signals from digital audio data, and combining the sound signal for the respective channels to generate two-channel surround headphone output signals for outputting to headphones, comprising:
- a sampling frequency detection member detecting from said digital audio data a sampling frequency included in the digital audio data concerned;
- and
- an attenuation rate control member selecting an attenuation rate in accordance with the sampling frequency detected by the sampling frequency detection member, and attenuating a level of said surround headphone output signal on the basis of the selected attenuation rate.
Dependencies are inferred from the claim text.