Как расчитывается period_size из buffer_size?

[Electricity]

Звук, как "пластинку заъело". Мои параметры:

$ speaker-test -Dplug:surround51 -c6

speaker-test 1.1.3

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 6 to 10922
Period size range from 6 to 10922
Using max buffer size 10920
Periods = 4
was set period_size = 2730
was set buffer_size = 10920
 0 - Front Left

Или что не так?

[EvangelionDeath]

Electricity, нипанятна...

Ctrl+C ?

[Electricity]

$ speaker-test -Dplug:surround51 -c6

speaker-test 1.1.3

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 6 to 10922
Period size range from 6 to 10922
Using max buffer size 10920
Periods = 4
was set period_size = 2730
was set buffer_size = 10920
 0 - Front Left
^C 2 - Front Center
 1 - Front Right
 5 - Rear Right
 4 - Rear Left
 3 - LFE
Time per period = 6,880613