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AV2USB

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Copyrights DSP4YOU ltd

AV2USB

AVB to USB audio interface

User Manual

Revision

Description

Date

V1.0

Initial revision

05-05-2013

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Summary of Contents for AV2USB

Page 1: ...AV2USB Page 1 of 24 Copyrights DSP4YOU ltd AV2USB AVB to USB audio interface User Manual Revision Description Date V1 0 Initial revision 05 05 2013 ...

Page 2: ...s now a so called Talker Listener device In other words a streaming interface able to receive and transmit up to 8 audio channels packetized as required in upto 8 streams The configuration routing to the AVB world is as simple as a Drag Drop process thanks the AVBStreamer software or any IEEE 1722 1 protocol compliant software From a multi channel background music processor to a PC based recorder ...

Page 3: ...3 2 1 Driver general info 11 3 2 2 Buffer settings 11 3 2 3 Device configuration 11 3 2 4 Input channel volume control recording 12 3 2 5 Output channel volume control playback 12 3 2 6 Clock source 12 3 2 7 Stream formats 13 3 3 Mac OSx configuration 13 3 3 1 Device configuration 13 3 3 2 Speaker output for default output channel 14 4 AVB Streamer Tools setup guide 16 4 1 User interface overview ...

Page 4: ...o too much detail the three core protocols specify Timing and synchronization Bandwidth allocation through the Stream Reservation Protocol SRP Traffic shaping to ensure that low priority Ethernet traffic does not interfere with AVB traffic Engineered from the ground up for media streaming applications AVB has a definitive edge over legacy Ethernet technology in the sense that it allows bandwidth a...

Page 5: ...fy the configuration of your unit 2 2 Connectivity 2 2 1 Network AV2USB requires at least one Ethernet connection for configuration and audio streaming Configuration is performed using the provided AVBStreamer toolbox software and using a single Ethernet cable A standard straight through Ethernet CAT5 6 network is required for connectivity through a network switch A crossover CAT 5 6 cable is requ...

Page 6: ...r Windows OS The AV2USB is an audio class 2 0 device which requires some driver installation under Windows OS Installation of the drivers allows any audio playback or recording software to access the USB audio section of the AV2USB It is compliant to two standard audio drivers Windows Driver Model WDM Almost all software support this scheme but may require some testing since it s not as flexible w...

Page 7: ...next the setup wizard will check your system capabilities If you didn t connect the USB audio cable and provided power to the AV2USB unit you will receive the follow message Make sure you connect both the USB cable and 5V external DC power to the unit Next step is to choose a location on your harddrive for the installation Wait for the installation to begin ...

Page 8: ...n Continue Anyway at the warning about driver certificate A successful installation will show the following dialog box Following the pre installation of the drivers on your PC the connected AV2USB will now be detected by Windows pop up window as follow ...

Page 9: ...AV2USB Page 9 of 24 Copyrights DSP4YOU ltd Click on Install the software automatically Click on Continue Anyway to the warning message about driver signing ...

Page 10: ...AV2USB Page 10 of 24 Copyrights DSP4YOU ltd ...

Page 11: ...s may result in unstable operation since such modifications are PC resource dependant In other words your PC OS configuration may not have the horsepower memory sufficient to have the lowest latency settings If you do not require lowest latency e g simple audio playback we recommend that you do not modify the default safe settings 3 2 3 Device configuration This panel is the configuration panel fo...

Page 12: ... the Network Note that controls of each channel pair can be linked stereo case or unlinked mono The M button is equivalent to the Mute button 3 2 5 Output channel volume control playback This panel is self explanatory but here is some basic information of the control available o 1 x Master volume control for all 8 output channels o 8 x volume controls for each AVB outputs channels from PC to the N...

Page 13: ... has native support for USB Audio class 2 0 device and therefore doesn t require any drivers The device will automatically be detected as a compliant multichannel USB audio interface See below some screenshot of the interface 3 3 1 Device configuration Once plugged the device will automatically appear in Utilities Audio Midi setup Select the interface to configure the settings such as format Clock...

Page 14: ...our media player applications 3 3 2 Speaker output for default output channel Being a multichannel device one can easily configure the AV2USB for a 7 1 application if I2S is being used to feed a multichannel DAC Here are the 2 most common configurations Stereo configuration using the Toslink output to your 3rd party DAC Click on Configure Speakers and the below dialog box will appear Default chann...

Page 15: ...DSP4YOU ltd 7 1 multichannel configuration using the I2S outputs Similar to before but this time select the 7 1 Surround configuration from the drop down menu You then just need to assign the I2S channels as per your DAC configuration ...

Page 16: ...uron family or compatible processor recommended 256 megabytes MB of RAM or higher recommended USB 2 0 port Keyboard and mouse or compatible pointing device Step1 Pre installation steps Install net framework and Air environment on your PC Step2 Getting AVBStreamer Tools install package Get the latest version of AVBStreamer tools from www dsp4you com Login with your user account to gain access to th...

Page 17: ...ocessor Note that the digital signal processing section will only be enabled if this feature was purchased 4 2 AV2USB Stream configuration 4 2 1 Device info page AVB end points are automatically discovered and listed as part of the AVB tree Once your PC connected to the network simply open the AVB Streamer toolbox to have access to all settings To access the settings of a specific device click on ...

Page 18: ... their respective Mac address IP 4 2 1 3 Firmware upgrade The AV2USB can easily be upgraded to new version over the Ethernet Click Browse to select the firmware you would like to upgrade the unit with Make sure not to un plug the device during the firmware upload to prevent any corruption of the device 4 2 2 Audio Video Bridging AVB stream configuration The AV2USB AVB configuration requires limite...

Page 19: ... is a listener on the AVB network i e AVB to Analog Audio With the talker and listener selected the next step in building a stream is to select the source channels from the talker channel section You can select one or multiple audio channels press the CTRL key from the Talker list Simply drag drop them to the Listener channel list as shown below In this example we re using ch_1 and ch_2 of the AV2...

Page 20: ...nter of the interface A confirmation message will appear with the Stream ID information 4 2 2 2 Delete a stream Once a stream is configured the stream is listed in the Talker stream list below the Talker audio channels and is uniquely identified by the Listener s hostname To delete a stream simply drag from the Taker stream list the particular stream into the garbage bin To configure a new stream ...

Page 21: ...owing the stream ID 6 3rd party Software and configuration 6 1 Audio Recording The AV2USB will operate with any software compatible with ASIO WDM driver standards Remember to configure the software such that it s recording at the resolution sample rate of the AVB stream 24bit 48kHz In most software that will be under preferences or the first dialog box when creating a multi channel recording 6 2 A...

Page 22: ...ep 1 Configure the target sample rate from the DSP manager of the Resampler plug in Step 2 Configure the ASIO routing from the playback Output section The Audio channels will appear as 4 pairs of 2ch Step 3 Make sure to select the correct interface from the drop down list ...

Page 23: ...AV2USB Page 23 of 24 Copyrights DSP4YOU ltd ...

Page 24: ...802 1Qat 802 1 Qav P1722 Audio streaming capability Up to 8 input channels AVB to USB Up to 8 output channels USB to AVB Power over Ethernet PoE 1 port with with PoE capability for remote powering of device over Ethernet USB 2 0 USB Audio class 2 device USB 2 0 High speed Asynchronous transport with ASIO based drivers Driverless on Mac Thesycon driver provided for Windows Front Rear connectors FRO...

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