USB - Revision history

Brad Johnson at 20:12, 22 November 2016

2016-11-22T20:12:55Z

Brad Johnson at 20:06, 22 November 2016

2016-11-22T20:06:26Z

Brad Johnson at 18:31, 13 January 2015

2015-01-13T18:31:36Z

Brad Johnson at 18:30, 13 January 2015

2015-01-13T18:30:24Z

Brad Johnson at 18:25, 13 January 2015

2015-01-13T18:25:46Z

Brad Johnson at 18:25, 13 January 2015

2015-01-13T18:25:00Z

Brad Johnson at 18:23, 13 January 2015

2015-01-13T18:23:22Z

Brad Johnson at 19:23, 7 January 2015

2015-01-07T19:23:20Z

Brad Johnson at 18:34, 7 January 2015

2015-01-07T18:34:11Z

Show changes

Brad Johnson at 23:05, 6 January 2015

2015-01-06T23:05:15Z

← Older revision		Revision as of 20:12, 22 November 2016
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−	Microsoft® OS did not support USB Audio Class 2 prior to Windows10. If you have an audio device which supports sample frequencies higher than 96kHz, you probably need a third party USB class 2 driver ~~operating on an OS prior to Windows10.~~	+	Microsoft® OS did not support USB Audio Class 2 prior to Windows10. If you have an audio device which supports sample frequencies higher than 96kHz and are running an OS prior to Windows10; you will probably need a third party USB class 2 driver for proper operation at SR’s above 96kHz

	==USB Setup tips==		==USB Setup tips==

← Older revision		Revision as of 20:06, 22 November 2016
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−	~~It is unclear if~~ Microsoft® ~~is going to~~ support USB Audio Class 2. If you have an audio device which supports sample frequencies higher than 96kHz, you probably need a third party USB class 2 driver on ~~Windows®~~.	+	Microsoft® OS did not support USB Audio Class 2 prior to Windows10. If you have an audio device which supports sample frequencies higher than 96kHz, you probably need a third party USB class 2 driver operating on an OS prior to Windows10.

	==USB Setup tips==		==USB Setup tips==

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-USB 2.0 is downwardly compatible with class 1 and supports 32 bit and all common sample rates > 96 kHz
+USB 2.0 is downwardly compatible with class 1 and supports 32 bit and all common sample rates > 96 kHz. With the data rate of High Speed (40 X Full speed), recording 60 channels using 24 bits at 96 kHz is possible.
 With the data rate of High Speed (40 X Full speed), recording 60 channels using 24 bits at 96 kHz is possible.
 From mid-2010 on USB audio class 2 drivers are available in OSX 10.6.4 and Linux. Both support sample rates up to 384 kHz.

← Older revision		Revision as of 18:30, 13 January 2015
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	===USB Standards and Audio Specifications===		===USB Standards and Audio Specifications===

−	The USB 1.0 Class 1 standard allows for 24 bit/96 kHz maximum resolution for input and output of digital audio. All operating systems (Win, OSX, and Linux) support USB Audio Class 1 natively, which means ~~you don’t need~~ to install drivers~~; it is plug& play~~. All support 2 channel audio with 24 bit [[word]]s and 96 kHz [[sample rate]]. The Lavry AD11 and DA11 are this class of device.	+	The USB 1.0 Class 1 standard allows for 24 bit/96 kHz maximum resolution for input and output of digital audio. All operating systems (Win, OSX, and Linux) support USB Audio Class 1 natively, which means when using audio devices which utilize these native drivers, it is not necessary to install drivers before using the device. All support 2 channel audio with 24 bit [[word]]s and 96 kHz [[sample rate]]. The Lavry AD11 and DA11 are this class of device.

← Older revision		Revision as of 18:25, 13 January 2015
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	===USB Standards and Audio Specifications===		===USB Standards and Audio Specifications===

−	The USB 1.0 Class 1 standard allows for 24 ~~bits~~/96 kHz maximum resolution for input and output of digital audio. All operating systems (Win, OSX, and Linux) support USB Audio Class 1 natively, which means you don’t need to install drivers; it is plug& play. All support 2 channel audio with 24 bit [[word]]s and 96 kHz [[sample rate]]. The Lavry AD11 and DA11 are this class of device.	+	The USB 1.0 Class 1 standard allows for 24 bit/96 kHz maximum resolution for input and output of digital audio. All operating systems (Win, OSX, and Linux) support USB Audio Class 1 natively, which means you don’t need to install drivers; it is plug& play. All support 2 channel audio with 24 bit [[word]]s and 96 kHz [[sample rate]]. The Lavry AD11 and DA11 are this class of device.

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 In a similar manner, audio output devices are shown as a “speaker” in the operating system control panels, regardless of whether they are a speaker or line level audio device.
 ===Lavry===
-All current Lavry products with USB connectivity utilize the “Native” USB audio drivers of the computer’s Operating System (OS). This effectively makes Lavry converters “plug & play” with some settings required for optimum results. For specific information on USB connection and settings, see [[USB setup]]. For additional information, please refer to the product manual, information documents listed under the Downloads tab of the product page on the Lavry website, and the product page of the Lavry Wiki.
+All current Lavry products with USB connectivity utilize the “Native” USB audio drivers of the computer’s Operating System (OS). This effectively makes Lavry converters “plug & play” with some settings required for optimum results. For specific information on USB connection and settings, see [[USB setup]]. For additional information, please refer to the product manual, documents listed under the Downloads tab of the product page on the Lavry website, and the product page of the Lavry Wiki.
 The Lavry AD11 and DA11 are USB 1.1 compatible.

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 The Audio MIDI Setup dialog has a provision to create an Aggregate Device to combine input and output devices with different physical connections. By doing so, these separate devices appear to the recording software as a single audio interface.
 *For basic playback, it is not necessary to create an aggregate device.
-*To record with the AD11 and DA11, an aggregate device must be created. Programs like Protools may create their own aggregate device, which is require for use in place of a Core Audio aggregate device. Even if you are using only the AD11 connected via USB, an aggregate device would need to be created with the AD11 for input and the computer’s built-in audio as an output. Please note that the Protools aggregate device does not allow the AD11 and DA11 to be connected via USB simultaneously. The DA11 would need to be connected using the Macintosh’s built-in [[optical]] output, which can be combined with the USB connected AD11 in the Protools aggregate device.
+*To record with the AD11 and DA11, an aggregate device must be created. Programs like Protools may create their own aggregate device, which is required for use in place of a Core Audio aggregate device. Even if you are using only the AD11 connected via USB, an aggregate device would need to be created with the AD11 for input and the computer’s built-in audio as an output. Please note that the Protools aggregate device does not allow the AD11 and DA11 to be connected via USB simultaneously. The DA11 would need to be connected using the Macintosh’s built-in [[optical]] output, which can be combined with the USB connected AD11 in the Protools aggregate device.
 For details on settings, please see the document “Connecting to ProTools 9 or 10 (PDF)” which is available under the AD11 product page Downloads tab for details on Audio MIDI settings, or [http://www.lavryengineering.com/pdfs/lavry-ad11-da11-protools.pdf or click here].