Vlsi HeaDSPeaker, Руководство пользователя

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H
EA
DSP
EAKER
– 5.1
HEADPHONE SYSTEM
6.3 U S B-audio C ontrol s
USB audio specification supports standard audio controls which can be utilized by
operating system or audio applications when controlling USB audio devices. These
include volume control, bass/treble controls etc.
If the host device supports USB audio controls, volume level of the Hea DSP eaker device
can be adjusted using these controls.
Accordingly, level of bass output can be adjusted if host device supports USB audio
controls. When the bass level is increased, Hea
DSP eaker will emphasize frequenzies
below 70 Hz and apply companding to the signal to prevent clipping. Bass emphasis
affects all channels. If the level of the bass is decreased, only subwoofer channel (LFE) is
affected. This can help reducing the amount of distortion when headphones with limited
ability to reproduce low frequencies are in use.
Treble adjustment operates in frequencies above 8 kHz. Adjustment range is ±10 dB.
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