• Nobutaka Okabe's avatar
    ALSA: usb-audio: Eliminate noise at the start of DSD playback. · 01200730
    Nobutaka Okabe authored
    
    
    [Problem]
    In some USB DACs, a terrible pop noise comes to be heard
    at the start of DSD playback (in the following situations).
    
    - play first DSD track
    - change from PCM track to DSD track
    - change from DSD64 track to DSD128 track (and etc...)
    - seek DSD track
    - Fast-Forward/Rewind DSD track
    
    [Cause]
    At the start of playback, there is a little silence.
    The silence bit pattern "0x69" is required on DSD mode,
    but it is not like that.
    
    [Solution]
    This patch adds DSD silence pattern to the endpoint settings.
    
    Signed-off-by: default avatarNobutaka Okabe <nob77413@gmail.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    01200730