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xtinaaaa
Feb 16th, 2017
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  1. $ arecord -v -r48000 -c2 -fS32_LE --period-size=16384 --buffer-size=65536 -Dmic_sv -twav /dev/null
  2. Recording WAVE '/dev/null' : Signed 32 bit Little Endian, Rate 48000 Hz, Stereo
  3. Soft volume PCM
  4. Control: Boost Capture Volume
  5. min_dB: -3
  6. max_dB: 50
  7. resolution: 256
  8. Its setup is:
  9. stream : CAPTURE
  10. access : RW_INTERLEAVED
  11. format : S32_LE
  12. subformat : STD
  13. channels : 2
  14. rate : 48000
  15. exact rate : 48000 (48000/1)
  16. msbits : 32
  17. buffer_size : 65536
  18. period_size : 16384
  19. period_time : 341333
  20. tstamp_mode : NONE
  21. period_step : 1
  22. avail_min : 16384
  23. period_event : 0
  24. start_threshold : 1
  25. stop_threshold : 65536
  26. silence_threshold: 0
  27. silence_size : 0
  28. boundary : 1073741824
  29. Slave: Route conversion PCM
  30. Transformation table:
  31. 0 <- 0
  32. 1 <- 0
  33. Its setup is:
  34. stream : CAPTURE
  35. access : MMAP_INTERLEAVED
  36. format : S32_LE
  37. subformat : STD
  38. channels : 2
  39. rate : 48000
  40. exact rate : 48000 (48000/1)
  41. msbits : 32
  42. buffer_size : 65536
  43. period_size : 16384
  44. period_time : 341333
  45. tstamp_mode : NONE
  46. period_step : 1
  47. avail_min : 16384
  48. period_event : 0
  49. start_threshold : 1
  50. stop_threshold : 65536
  51. silence_threshold: 0
  52. silence_size : 0
  53. boundary : 1073741824
  54. Slave: Mmap emulation PCM
  55. Its setup is:
  56. stream : CAPTURE
  57. access : MMAP_INTERLEAVED
  58. format : S32_LE
  59. subformat : STD
  60. channels : 2
  61. rate : 48000
  62. exact rate : 48000 (48000/1)
  63. msbits : 32
  64. buffer_size : 65536
  65. period_size : 16384
  66. period_time : 341333
  67. tstamp_mode : NONE
  68. period_step : 1
  69. avail_min : 16384
  70. period_event : 0
  71. start_threshold : 1
  72. stop_threshold : 65536
  73. silence_threshold: 0
  74. silence_size : 0
  75. boundary : 1073741824
  76. Slave: Hardware PCM card 1 'mems-mic' device 0 subdevice 0
  77. Its setup is:
  78. stream : CAPTURE
  79. access : RW_INTERLEAVED
  80. format : S32_LE
  81. subformat : STD
  82. channels : 2
  83. rate : 48000
  84. exact rate : 48000 (48000/1)
  85. msbits : 32
  86. buffer_size : 65536
  87. period_size : 16384
  88. period_time : 341333
  89. tstamp_mode : NONE
  90. period_step : 1
  91. avail_min : 16384
  92. period_event : 0
  93. start_threshold : 1073741824
  94. stop_threshold : 65536
  95. silence_threshold: 0
  96. silence_size : 0
  97. boundary : 1073741824
  98. appl_ptr : 0
  99. hw_ptr : 0
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