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Introduction Introduction provides audio buffering, level adjustment and mixing functions. Hardware sampling rates of 48kHz, 96kHz and 192kHz are available, with the Windows sampling rate converter transparently providing support for other rates. The card supports extended bit depths to 32 bit and the software sampling rate and bit depth (32, 24, 16 or 8 bits PCM) can be set independently for each input and output channel.
Installation Installation Notes Regarding Windows Version Differences Windows XP and Server 2003 are the only current versions of Windows that The software package consists of the driver installation file (Auricon44. provide complete support for “traditional” WDM audio drivers. Windows inf or Auricon44x64.inf), the kernel-mode driver (Auricon44.sys), the 8, 7, Vista and corresponding server versions provide limited support for configuration DLL (Auricon44Coinstaller32.dll or Auricon44Coinstaller64.dll) applications using the legacy audio APIs, while adding a new Core Audio API...
Configuration Operation on Windows 8, 7, Vista your PC. This typically happens if there has been no sound card previously installed in the PC. Windows XP (prior to Service Pack 1) and Server 2003 by and Server 2012, 2008-R2, 2008 default have the loudspeaker symbol turned off.
Configuration Audio Engine the first channel is set as the default for playback and record but this can be changed by right-clicking on the loudspeaker symbol, selecting The Windows audio engine runs at a fixed sampling rate and bit depth. By Playback Devices or Recording Devices, and then right-clicking on the default, the Auricon 4.4 driver sets the sampling rate to the card’s hardware desired endpoint and selecting Set as Default Device.
Configuration DirectSound and WDM Kernel Topology Streaming The Auricon 4.4 topology is shown in the diagrams at the end of this manual. Microsoft’s DirectSound and Windows Driver Model (WDM) are designed The playback topology consists of a master output level, mute control and to work hand in hand to take full advantage of audio card hardware and peak meter, and input monitor level and mute controls for each of the line provide kernel-mode software emulation of features not directly supported.
Configuration Extended Bit Depth Audio blocked until that resource becomes free, resulting in gaps on playback or skipping while recording. Traditionally, PC-based audio capture and playback has been restricted to either 8 bit or 16 bit encoding, with the WAVE_FORMAT_PCM descriptor If this proves to be a problem on a hyperthreaded system, the used to define the audio parameters such as samples per second, bits per hyperthreading can usually be disabled in one of the BIOS settings.
Configuration Unbalanced Balanced Unbalanced Balanced Shielded Twisted Pair Shielded Twisted Pair Output Input Input Output Fig 1-3: Connecting the Auricon 4.4 to Unbalanced Outputs Fig 1-1: Connecting the Auricon 4.4 to Unbalanced Inputs Going the other way from unbalanced to balanced is easy if the signal It is possible to achieve an acceptable connection without using a balancing level is adequate.
Configuration The converters operate at a sampling rate of 48kHz, 96kHz or 192kHz according to the driver setting. The Auricon supports standby and hibernation power management modes. Auricon 4.4 Pinout High Density 44-Pin Female Connector Input Output 1 Left + 1 Left + 1 Left - 1 Left -...
Configuration Auricon 4.4 Topology Line Input 1 Analogue Output 1 Wave Out Line Input 2 Playback Master Playback Software Device A Midi Synth Loopback Record Software Device A Line Input 1 Record Master Line Input 2 Line Input 1 Analogue Output 2 Line Input 2 Wave Out Playback Master...
Configuration Output Mixing eight if configured as mono), master level control and peakmeter. All level controls include a mute control as well. The Auricon 4.4 presents itself to the operating system as multiple independent wave output devices. Each device can support any number of Each waveOut stream is created by opening an instance of output streams, courtesy of the Windows Kernel Mixer or Audio Engine.
Appendix A – Surround Sound Playback and Recording Driver 5.1 & 7.1 Surround Sound Playback and Recording Driver Overview • Right-click on the loudspeaker symbol in the bottom right and corner of With hardware revision 2 and driver version 8.0.0.3502, the Auricon 4.4 the screen and select Playback devices.
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Appendix A – Surround Sound Playback and Recording Driver Speakers Properties Levels Tab • Right-click on this device and select Enable. • Repeat this for the Recording devices. Click on the ‘Levels’ tab to show and alter the output levels. Speakers Properties General Tab Right click on the Speakers (Auricon 4.4) icon and select Properties.
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Appendix A – Surround Sound Playback and Recording Driver There is a master ‘Line Output The Windows audio engine automatically maps 5.1 audio streams onto the Surround’ output fader and 7.1 output using Front left/right, Centre/LFE and Side left/right. individual faders for ‘Wave Out However Windows Media Player bypasses this mapping and instead plays Mix’...
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Appendix A – Surround Sound Playback and Recording Driver Limitations • It appears that multi-channel hardware peak meters are not yet properly supported in Windows. The 8-channel input and output subdevices therefore don’t have peak meter nodes, with Windows instead creating software peak meters.
Technical Specification Technical Specification For PC-AUR44 Operating Systems Supported Physical Specification Platform: Supports Windows - XP, Server 2003, Vista, Dimensions (Raw): 14cm (L) x 12.5cm (H) x 2cm (D) Server 2008, Windows 7, Server 2008 R2, 5.5” (L) x 4.9” (H) x 0.8” (D) Windows 8, Server 2012 (32-bit and x64 Dimensions (Boxed): 27cm (L) x 22.5cm (H) x 6cm (D)
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