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# speaker-test -c2 -r48000 -D hw:0

speaker-test 1.0.17

Playback device is hw:0
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise                   
Rate set to 48000Hz (requested 48000Hz)          
Buffer size range from 64 to 16384               
Period size range from 32 to 8192                
Using max buffer size 16384                      
Periods = 4                                      
was set period_size = 4096                       
was set buffer_size = 16384                      
 0 - Front Left                                  
 1 - Front Right                                 
Time per period = 5,632628                       
 0 - Front Left                                  
 1 - Front Right                                 

# speaker-test -Dplug:surround51 -c6

speaker-test 1.0.17

Playback device is plug:surround51
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 16384
Period size range from 32 to 8192
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
 0 - Front Left
 4 - Center
 1 - Front Right
 3 - Rear Right
 2 - Rear Left
 5 - LFE
Time per period = 17,579654
 0 - Front Left
 4 - Center
 1 - Front Right
 3 - Rear Right
 2 - Rear Left
 5 - LFE

# speaker-test -Dplug:surround40 -c4

speaker-test 1.0.17

Playback device is plug:surround40
Stream parameters are 48000Hz, S16_LE, 4 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 16384
Period size range from 32 to 8192
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
 0 - Front Left
 1 - Front Right
 3 - Rear Right
 2 - Rear Left
Time per period = 11,606148
 0 - Front Left
 1 - Front Right
 3 - Rear Right
 2 - Rear Left