Surround

Surround sound control parameters

Parameter

Description

Allowed Value

Default Value

lfe_surround

Low-Frequency Effects

yes, no

none

lowpass_filter

Lowpass filter for the LFE channel

yes, no

none

surround_mode

Dolby Surround mode

not_indicated, yes, no

none

surround_mode_ex

Dolby Surround EX mode

not_indicated, yes, no

none

surr_shift

Surround 90 degree phase shift

yes, no

none

surr_attenuation

Surround -3dB attenuation

yes, no

none