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Sonifex Pty Ltd T/A Innes Corporation 
12/6 Leighton Pl 
Hornsby, NSW 2077, Australia 
Phone: +61 2 9987 0499 
Fax: +61 2 9987 0599 
E-mail: 

sales@innescorp.com.au

 

Website: http://www.innescorp.com.au 

10

Auricon 2.2+ Manual

 

Topology 

 
The Auricon 2.2+ topology is shown in the diagrams at the end of this manual. 
 
The  playback  topology  consists  of  a  master  output  level,  mute  control  and  peak  meter,  and 
input monitor level and mute controls for each of the line inputs. To these the kernel mixer adds 
virtual level and mute controls for wave, synthesizer and CD outputs. 
 
The  record  topology  consists  of  a  master  input  level,  mute  control  and  peak  meter,  line  input 
level controls for each of the physical inputs and a digital loopback level control and mute. 
 
The digital loopback allows the output of the card to be digitally mixed back into the input. This 
function  is  muted  when  Windows’  Digital  Rights  Management  detects  that  protected  audio  is 
being  played,  in  accordance  with  Microsoft’s  specifications. 

Note: 

Under  Windows  8,  7,  Vista 

and  corresponding  server  versions,  the  loopback  endpoint  is  disabled  by  default.  See  the 
section on Windows 8, 7, Vista and Server 2012, 2008-R2 and 2008 above for instructions on 
how to enable it. 
 
The  range  on  the  input  and  output  master  controls  is  -96dB  to  +6dB,  while  the  individual  line 
controls range from -96dB to 0dB. Note that, for reasons known only to Microsoft, on Windows 7 
and Vista Service Pack 1 the 0dB setting on the playback Master Volume control is 67, while on 
Windows 8 it is 75. 
 
To  access  the  playback  and  record  mixer  controls  on  Windows  XP,  Server  2003  and  earlier, 
double-click  on  the  loudspeaker  symbol  at  the  bottom  right  hand  corner  of  the  screen.  On 
Windows  Vista  and  later,  right-click  on  the  loudspeaker  symbol,  select  Playback  Devices  or 
Recording  Devices,  select  the  desired  endpoint,  click  on  Properties,  and  then  click  on  the 
Levels tab. 

Summary of Contents for Auricon 2.2+

Page 1: ...61 871 Sonifex Pty Ltd T A Innes Corporation 12 6 Leighton Pl Hornsby NSW 2077 Australia Phone 61 2 9987 0499 Fax 61 2 9987 0599 E mail sales innescorp com au Website http www innescorp com au Auricon...

Page 2: ...des audio buffering sampling rate conversion level adjustment and mixing functions Sampling rates of 96kHz 88 2kHz 64kHz 48kHz 44 1kHz 32kHz 24kHz 22 05kHz and 16kHz are directly supported with 32 24...

Page 3: ...stances Certification is available upon request Notes Regarding Windows Version Differences Windows XP and Server 2003 are the only current versions of Windows that provide complete support for tradit...

Page 4: ...00 extended bit depth audio was accepted by the wave and DirectSound API s but truncated internally to 16 bits 24 bit or 32 bit capture is supported on all Windows versions In all versions prior to Wi...

Page 5: ...er where the Auricon will be listed under Other Devices as a Multimedia Audio Controller Right click on it select Update Driver Software then click on Browse my computer for driver software and click...

Page 6: ...m Note The input topology is always set to selector under Windows 8 7 Vista and Server 2012 2008 R2 and 2008 as these platforms do not support input mixing The input coupling can be set to either DC o...

Page 7: ...peaker symbol at the bottom right hand corner of the screen select Recording Devices right click anywhere in the window and select Show Disabled Devices Now right click on the desired Wave Out Mix dev...

Page 8: ...rate converter is used whenever a different sampling rate or bit depth is requested by applications The engine sampling rate and bit depth for each endpoint can be changed if required by selecting th...

Page 9: ...ing rate conversion is automatically inserted if any of the multiple playback or recording streams have different sampling rates Note To use direct CD playback you need to enable this by going to Sett...

Page 10: ...function is muted when Windows Digital Rights Management detects that protected audio is being played in accordance with Microsoft s specifications Note Under Windows 8 7 Vista and corresponding serv...

Page 11: ...e was a need to support extended bit depth To achieve this Microsoft introduced a new data format descriptor called WAVE_FORMAT_EXTENSIBLE This provides additional information including the number of...

Page 12: ...cessor For most applications this is fine and results in a substantial improvement in performance for a given processor complexity however for time critical audio applications a problem can arise when...

Page 13: ...input In the diagram below the transformer does the balanced to unbalanced conversion and the resistors adjust the level It is preferable to use a 1 1 transformer and the resistive attenuator rather...

Page 14: ...lso performs the sampling rate conversion level adjustment and mixing functions Card initiated bus mastering is used for audio data transfer through the PLX PCI9054 PCI interface The converters operat...

Page 15: ...innescorp com au 15 Auricon 2 2 Manual Auricon 2 2 Pinout 13 25 12 24 11 23 10 22 9 21 8 20 7 19 6 18 5 17 4 16 3 15 2 14 1 DB25 Shield Output 1 Left Output 1 Right Input 1 Left Input 1 Right Input 2...

Page 16: ...icon 2 2 Topology Wave Out Midi Synth CD Line Input 1 Line Input 2 Playback Master Analog Output 1 Wave Out Midi Synth CD Line Input 1 Line Input 2 Playback Master Analog Output 2 Analog Input 1 Analo...

Page 17: ...lude a mute control as well WaveOut Midi CD Line Input 1 Line Input 2 Playback Master Analog Output Analog Input 1 Analog Input 2 Software Synth Redbook waveOut stream waveOut stream DirectSound strea...

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