ASI6520, ASI6522
19 November 2014
ASI6520, ASI6522
MULTISTREAM PCI SOUND CARDS
1 DESCRIPTION
2 FEATURES
The ASI6522 and ASI6520 are professional PCI sound cards
designed for use in radio broadcast automation.

4 or 6 stereo streams of playback into 2 stereo outputs

2 or 4 stereo streams of record from 2 stereo inputs

Supported formats: PCM, MPEG layer 2 and MP3 with sample
rates to 96kHz

MRX technology supports digital mixing of multiple stream
formats and sample rates

TSX time scaling allows compression/expansion of play
streams by up to +/-20% with no pitch shift

Balanced stereo analog inputs and outputs with levels to +24dBu

24bit ADC and DAC with 110dB SNR and 0.0015% THD+N

AES/EBU inputs and outputs with sample rate converters on all
inputs (ASI6522 only)

Dedicated AES/EBU and Word clock Sync input (ASI6522 only)

SoundGuard™ transient voltage suppression on all I/O

Short length PCI card format (6.5 inches/165mm)

Up to 4 cards in one system

Windows 8, 7, Server 2008/2012, and Linux drivers available
Providing 4 or 6 play streams that are mixed to 2 balanced stereo
outputs and 2 or 4 record streams fed from 2 balanced stereo
inputs, the ASI6522 and ASI6520 feature AudioScience’s unique
“anything to anywhere” mixing and routing.
The ASI6522 provides both balanced analog and AES/EBU inputs
and outputs. The ASI6520 has analog I/O only. The maximum
analog input and output level is +24dBu.
A choice of uncompressed PCM, MPEG layer 2 and MP3 is
available for both recording and playback. All compression is
handled by an on-board floating point DSP, allowing the host
computer to focus on other tasks.
DSP based functionality includes MRX™ multi-rate mixing
technology, which allows streams of different, sample-rates and
formats to be mixed digitally. TSX™ time scaling allows
compression/expansion of any or all playback streams in real time
with no change in pitch.
ASI6522, ASI6520
Play 1
Line Out 1
AES3 Out 1*
Play 2
Line Out 2
Play 3
AES3 Out 2*
Play 4
Play 5 #
Play 6 #
Line In 1
AES3 In 1*
Line In 2
Record 1
AES3 In 2*
Record 2
Record 3 #
Adapter
Sample
Rate
Record 4 #
Adapter Clock
AES3 Sync In*
Word Clock In*
Word Clock Out*
* ASI6522 Only
# Available in 6 Play/4 Record stream mode
Key:
www.audioscience.com
1
Record Stream
Level
Meter
Play Stream
Mixer
Sample Rate Converter
Input/Output
Multiplexer
Channel Mode
Volume
AES/EBU Tx/Rx
Clock Source
19 November 2014
ASI6520, ASI6522
3 SPECIFICATIONS
ANALOG INPUT/OUTPUT
Type
Connector
Input Level
Input Impedance
A/D converter
Output Level
D/A converter
Load Impedance
Dynamic Range [1]
THD+N [1]
Frequency Response
Inter-channel Phase
Inter-channel Crosstalk
Balanced
Mini50 (SCSI-II type)
-10 to +24dBu in 0.5dBu steps
10K ohms
24bit oversampling
-10 to +24dBu in 0.5dBu steps
24bit oversampling
600ohms or greater
>110dB (record or play)
<-96dB (0.0015%) (record or play)
20Hz to 20kHz +0/-0.2dB
20Hz to 40kHz +0/-3dB
<0.1 degrees (record or play)
>110dB (record or play)
DIGITAL INPUT/OUTPUT [2]
Type
Input/Output Impedance
Connector
Sample Rates
AES/EBU (EIAJ CP-340 Type I / IEC-958 Professional)
110 ohms
Mini26 (SCSI-II type)
32, 44.1, 48, 88.2 and 96kHz with sample rate converters on inputs
SAMPLE RATE CLOCK
Internal (Adapter)
AES/EBU Sync In [2]
Word In [2]
Word Out [2]
32, 44.1 48, 88.2 and 96kHz
32, 44.1 48, 88.2 and 96kHz on dedicated AES/EBU input
32, 44.1 48, 88.2 and 96kHz
32, 44.1 48, 88.2 and 96kHz
SIGNAL PROCESSING
DSP
Memory
Audio Formats
Texas Instruments TMS320C6713@300MHz
8MB
8 bit unsigned PCM
16 bit signed PCM
32 bit floating point PCM
MPEG-1 Layer 2
MPEG-1 Layer 3(MP3) (MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and THOMSON
multimedia)
BREAKOUT CABLES (NOT INCLUDED)
Analog
Digital [2]
CBL1022: Mini DB50 to 4 XLR in and 4 XLR out
CBL1122: Mini DB26 to 2 in, 2 out XLR, 1 BNC in, 1 BNC out (Word Clock)
GENERAL
Bus
Dimensions
Weight
Operating Temperature
Power Requirements
32bit Universal PCI. PCI-X compatible.
PCI short-length form factor – 6.5" x 3.9" x 0.6" (165mm x 100mm x 15mm)
8 oz (227g) max
0C to 70C
+3.3V@1.5A +12V @ 250mA
[1] Dynamic Range and THD+N measured using a +24dBu 1kHz sine wave sampled at 48kHz and A
weighting filter.
[2] ASI6522 Only
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4 REVISIONS
Date
05 October 2006
07 January 2010
22 July 2011
24 May 2013
17 Sept 2013
10 Jan 2014
19 November 2014
www.audioscience.com
Description
Preliminary.
Page 1: Updated list of software drivers available.
Added Mono and SSX2 mode sections.
Updated format.
Added Low Latency section.
Fixed mode diagram on page 1
Corrected numbering error in mode view diagrams
Edited card dimensions
Updates operating system and install instructions
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5 CONTENTS
1
DESCRIPTION ....................................................................................................................................................1
2
FEATURES .........................................................................................................................................................1
3
SPECIFICATIONS ..............................................................................................................................................2
4
REVISIONS .........................................................................................................................................................3
5
CONTENTS .........................................................................................................................................................4
6
HARDWARE INSTALLATION............................................................................................................................5
6.1 SETTING ADAPTER INDEX – ONE ADAPTER IN THE PC ................................................................................................... 5
6.1.1
Setting Adapter Index - Two or More Adapters in the PC
5
7
SOFTWARE INSTALLATION ............................................................................................................................6
7.1 DRIVERS FOR WINDOWS 8, 7, SERVER 2008, SERVER 2012............................................................................................ 6
7.1.1
Combo Driver
6
7.1.2
ASIO
6
7.1.3
Driver Failure
6
7.2 DRIVERS FOR LINUX....................................................................................................................................................... 6
7.3 APPLICATIONS FOR WINDOWS ....................................................................................................................................... 7
7.3.1
ASIControl
7
8
OPERATION USING ASICONTROL ..................................................................................................................7
9
USER INTERFACE .............................................................................................................................................7
9.1.1
Adapter List Window
8
9.1.2
Adapter Topology Window
8
9.1.3
Node Controls Window
8
9.1.4
Adapter Information
8
9.1.5
Interface
9
9.2 ADAPTER MODE ............................................................................................................................................................. 9
9.2.1
Interface
9
9.3 PLAYER ........................................................................................................................................................................ 10
9.3.1
Interface
10
9.3.2
How To Play a File
10
9.3.3
Using embedded sine wave generator
10
9.3.4
Developer
11
9.4 RECORDER ................................................................................................................................................................... 11
9.4.1
Interface
11
9.4.2
How To Record a File
11
9.4.3
Developer
12
10
AUDIO FORMATS ..................................................................................................................................... 12
10.1
VOLUME .................................................................................................................................................................. 12
10.1.1
Interface
12
10.1.2
Developer
13
10.2
METER..................................................................................................................................................................... 13
10.2.1
Interface
13
10.2.2
Developer
13
10.3
CHANNEL_MODE .................................................................................................................................................... 14
10.3.1
Interface
14
10.4
CLOCKSOURCEIN .................................................................................................................................................... 14
10.4.1
Interface
15
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6 HARDWARE INSTALLATION
This section explains how to install one or more AudioScience adapters in a computer.
Setting Adapter Index – One Adapter in the PC
6.1
1. Make sure your computer is turned off.
2. PCI adapters should be installed in any empty PCI slot and PCIe adapters should be installed in any x1 (or
greater) PCIe slot.
3. Make sure the adapter jumper is set to adapter index #1, the factory default. For a new card no changes need
to be made. For an AudioScience adapter from another installation, check that it is set to adapter index #1.
Depending on the adapter family, there are different ways of setting the adapter index.
For ASI5000 and ASI6000 families, there is
an adapter jumper that must be set. The left
most position represents adapter index #1.
Adapter Jumper set
to Adapter #1
For ASI5300, ASI6300, ASI8700, and
ASI8900 families, there is a rotary switch.
NOTE: Position 0 (zero) represents adapter
#1, position 1 is adapter #2, etc.
Adapter Index switch
set to Adapter #1
4. Turn on the computer and let it boot. Under Windows, a dialog box will pop up informing you that the computer
has detected a new Multimedia Audio card. Cancel out of this dialog box and proceed to the software installation
section of this datasheet.
6.1.1
Setting Adapter Index - Two or More Adapters in the PC
1. Make sure your computer is turned off.
2. PCI adapters should be installed in any empty PCI slots and PCIe adapters should be installed in any x1 (or
greater) PCIe slots. Different adapter types can coexist in the same computer; for example, an ASI6416 and
ASI8921 will work correctly if installed in the same PC. Different adapter types still require unique adapter index
numbers.
3. Each adapter in the PC needs to have its adapter jumper/rotary switch position set to unique numbers. For
example if you are installing two adapters, the first one would be set to adapter index #1 and the second to
adapter index #2.
3.1. For ASI5000 and ASI6000 families, the position to the right of index #1, when jumpered, represents adapter
index #2. The next position represents #3, and the rightmost position, when jumpered, represents #4.
3.2. For ASI5300, ASI6300, ASI8700, and ASI8900 families, rotate the rotary switch to indicate what position is
required.
4.
Turn on the computer and let it boot. Under Windows, a dialog box will pop up informing you that the
computer has detected a new Multimedia Audio card. Cancel out of this dialog box and proceed to the
software installation section of this datasheet.
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7 SOFTWARE INSTALLATION
AudioScience makes audio adapters and drivers for various operating systems. Enhancements to an adapter’s
utility come from the integrators software that uses the audio driver to implement sophisticated audio playback
and recording functions.
7.1
Drivers for Windows 8, 7, Server 2008, Server 2012
Typically, drivers are not included with the hardware and will need to be downloaded from the AudioScience
website. They can be found here: http://www.audioscience.com/internet/download/win_drivers.htm
The first step is to determine what type of driver is needed for your operating system. Drivers are available for 32bit and 64-bit Windows systems.
Driver 3.10 and later present the user with three install options during installation:
 Install Standard PCI/PCIe Driver.
 Install Standard + Network Audio Driver.
 Remove all driver components
Traditional installs should select the first of these options. Users of AudioScience CobraNet and AVB products
should select the second option with the “+Network Audio Driver.” in the text.
7.1.1
Combo Driver
The Combo driver installs WDM devices by default and presents an option to “Install legacy 32-bit WAVE driver”
in case your application requires it. Download the file named ASICOMBO_xxxxxx.EXE from
www.audioscience.com and run it (_xxxxxx is the version number). After the EXE has run, reboot your computer
and the audio adapter will be operational. If the cover is off the computer, one can see one or two blinking LEDs
on top of the card indicating its DSP is running and communicating with the driver.
Verify that the adapter is running using ASIControl (see ASIControl section in this document).
7.1.2
ASIO
All AudioScience drivers also install an ASIO driver interface. It is installed by default.
7.1.3
Driver Failure
In the event that an adapter’s driver fails to load correctly, the OS’s event viewer should be checked. The event
log is viewed as follows:
7: The system event log is accessed from \Start\Control Panel\System and Maintenance\Administrative
Tools\Event Viewer. The Windows Logs\System view should be selected.
If two or more adapters are installed in the same system, the first thing to check is that the adapters were
assigned unique adapter numbers. If issues persist, please email support@audioscience.com.
7.2
Drivers for Linux
The latest Linux driver can be downloaded from the AudioScience website – www.audioscience.com
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7.3
Applications for Windows
AudioScience provides ASIControl for adapter set-up and configuration.
7.3.1
ASIControl
All Windows drivers install an AudioScience application called ASIControl that can be used to setup and verify
functionality of adapters. ASIControl provides a common interface for users across all driver types.
From the Windows Start menu, navigate to StartProgramsAudioScience and run the ASIControl program.
8 OPERATION USING ASICONTROL
Using ASIControl, the ASI6522 will look like so:
Adapter
List
Window
Node
Controls
Window
Adapter
Topology
Window
9 USER INTERFACE
ASIControl consists of three main windows: the adapter list in the top portion of the window, the adapter topology
view on the left hand side, and the node control list on the right hand side.
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9.1.1
Adapter List Window
The top portion of ASIControl shows a list of all the adapters that the application has found. By default, only bus
based (i.e. PCI and/or PCI Express) adapters will be shown. If the network portion of the driver is installed (by
selecting “Install Standard + Networked Audio Driver” after running the driver installer) and “Local PCI(e) +
Networked adapters” is selected from ASIControl’s OptionsConfigure adapter interface, then AudioScience and
other third party CobraNet devices will be shown.
Adapters are listed in order of adapter index. For bus-based adapters, this is determined by the adapter index
jumper on the card. For AudioScience CobraNet devices this is calculated from the unit’s MAC address. Third
party CobraNet devices are listed last as they have no AudioScience index.
9.1.2
Adapter Topology Window
The left hand side of ASIControl contains the topology view of the adapter. It is essentially a block diagram of the
device showing the available physical inputs and outputs on the right hand side of the black, vertical ‘bus’ line. On
the left hand side of the bus line, bus-based adapters show player and recorder streams, while CobraNet
adapters show their network connections.
Each of the inputs and outputs is referred to as a node and each Node contains one or more controls. The
topology shows each control as a small icon. A non-exhaustive list of nodes follows:
Line In
Line Out
AES/EBU In
AES/EBU Out
Player
Recorder
Tuner
Clock Source In
CobraNet In
CobraNet Out
Hovering the mouse over a particular node will highlight it. Clicking on a node will bring up the controls resident
on that node in the right hand control list.
There is an adapter node in the top left corner of the topology window. Clicking on this will show adapter-specific
controls and properties on the right hand side. Not all adapters have all nodes.
9.1.3
Node Controls Window
The right hand side of ASIControl shows the controls associated with the selected node in the topology view. The
controls are arranged, from top to bottom, in order of audio signal flow, i.e. the audio signal can be viewed as
entering the node at the top control and leaving at the bottom control. Controls may be used to either manipulate
the audio as it passes through the node, or report back control status information.
For a comprehensive listing of controls and how to operate ASIControl, please see the ASIControl manual
available from www.audioscience.com and also installed by the driver. Not all adapters have all controls.
The section below lists some common and any specific controls, as seen in ASIControl, for this adapter.
9.1.4
Adapter Information
This control displays information about the installed AudioScience product.
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9.1.5
Interface
Figure 1. Adapter information seen in right side of ASIControl.
Serial Number:
The serial number is displayed here.
Hardware Revision:
This lists the hardware revision of the AudioScience product.
DSP Software Version:
The DSP software version is displayed; usually the same as the driver version installed.
DSP Utilization:
This shows the loading of the AudioScience product’s DSP in percent.
Note: Utilization should be kept below 90%.
9.2
Adapter Mode
The Adapter_Mode control changes the number of players/recorders/lineouts that an adapter has. On certain
adapters, not all sample rates/formats are supported; changing the mode of the adapter allows for best
functionality with certain sample rates/formats. Different adapters will have different modes available, and not all
adapters have modes. Please see datasheets on specific adapters, available at www.audioscience.com for more.
9.2.1
Interface
Figure 2. Adapter Mode in ASIControl.
Selecting the appropriate mode from the list using the dropdown arrow changes the Adapter_Mode setting. A
reboot is necessary after changing adapter mode. The mode setting is saved to the adapter’s EEPROM.
The ASI6520/6522 support four adapter modes: 4-Play, 6-Play, Mono, and Low Latency.
9.2.1.1 4-Play (default)
This mode supports 4 Play streams, 4 Record streams, and 4 Out streams with full mixing capabilities.
9.2.1.2 6-Play
This mode supports 6 Play streams, 4 Record streams, and 2 Out streams with full mixing capabilities.
9.2.1.3 Mono
NOTE: Driver 4.02.00 or later is required.
This mode supports 8 mono Play streams and 2 mono Record streams with full mixing capabilities. Mono mode
supports mapping a single Play or Line_In device to a single Line_Out channel.
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9.2.1.4 Low Latency
NOTE: Driver 4.06.00 or later is required.
This mode supports a single multichannel audio stream enabling live sound processing in ASIO and Core Audio
applications. See the Low Latency Mode datasheet for further information.
9.3 Player
The Player control supports playback of an audio file from the computer’s hard drive.
9.3.1
Interface
Figure 3. A player in ASIControl.
The first line of static text contains the selected playback file. Below the filename is the file information; playback
time and playback bytes, the timescale select options, the player control buttons and the file repeat option.
9.3.2
How To Play a File
The first step in playing a file is to select the file to play. Use the file icon button to navigate to the desired file.
After opening the file, the complete filename, including the path, will appear immediately to the left of the file open
icon. At this point the file information is also filled in so that it contains the following fields: Channels, Rate,
Format, and Bit Rate. Most of there are self-explanatory. The Rate refers to the sample rate of the audio
recorded in the file. The Bit Rate applies only to MPEG compression and is set to 0 for all other formats.
At this point the percentage time scaling without pitch shift can be set if desired. The default of 0 indicates that
time scaling is disabled. The valid range of settings is +/- 20 percent.
The Repeat check box indicates whether the file should be played again after playback has completed. It can be
set either before playback has begun, or while playback is underway.
The file is now ready to be played. To start playback press the play button. At this point the Time and Bytes
fields report playback time and the number of bytes of the file that have been played.
Once playback has started, the stop and pause buttons can be used to stop or pause the playback.
9.3.3
Using embedded sine wave generator
Manually typing in a filename of “~” and pressing play will cause a full-scale 1 kHz sine wave to be played at 48
kHz. The format of the filename string is: "~w, c,f,a,m,s,t".
w
c
f
a
m
t
s
= waveform = SINE (default=SINE)
= channels = 1…8 (default = 2)
= frequency = 1000 for 1kHz (default=1000)
= amplitude = -1 for -1dBFs (default=0dBFS, i.e. full scale)
= channel mask = 10 for left only, 01 for right only, 11 for stereo, etc. (default=1 for all channels)
= sample type = (PCM8, PCM16, PCM24, PCM32, FLOAT32) (default=FLOAT32)
= sample rate = positive integer (default=48000) [validity depends on adapter]
Defaults can be used if the complete string is not specified, i.e.
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"~" becomes "~wSINE,c2,f1000,a0,m11,s48000,tFLOAT32"
Any subset of the options may be specified, the remaining options will be set to the defaults. e.g. "~f500" = 500Hz
stereo sine wave at 0dBFS, 48kHz sample rate.
9.3.4
Developer
9.3.4.1
Windows APIs
Wave – waveOutOpen(), waveOutWrite(), waveOutClose() etc.
HPI – Output stream functions documented here.
ASX – ASX Player control functions documented here.
DirectSound – TBD.
9.3.4.2
Linux APIs
HPI – TBD
9.4
Recorder
The Recorder control supports recording of an audio file.
9.4.1
Interface
Figure 8. A recorder in ASIControl.
The first line of text contains the name given to the recorded file along with the location where it is to be saved.
Below the filename is the file information, the record time and record bytes, the recorder control buttons and the
file Append option.
9.4.2
How To Record a File
The first step in recording a file is to have audio coming into the adapter. This can be from a line-in or from one of
the players in ASIControl. See appropriate sections in this datasheet to accomplish this. Next, the new file needs
a name and place to be saved, or an existing audio file can be selected to be overwritten or appended to. Use the
file icon button to navigate to the location to create the file and to give it a name, or to open a previously
recorded file to overwrite or append to it. Next, from the dropdown arrows, select the number of “Channels”, the
“Sample Rate”, the “Format”, and the “Bitrate” that the file should be recorded in.
Check the Append checkbox to save the audio to the end of an already existing file.
The file is now ready to be recorded. To start recording, press the record button. At this point the “Time’ and
“Bytes’ fields report record time and the number of bytes of the file that have been recorded.
Once recording has started, the stop and pause buttons can be used to stop or pause the playback.
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9.4.3
Developer
9.4.3.1
Windows APIs
Wave – use waveInOpen(), waveInStart() etc.
HPI – use HPI_InStreamxxx() functions.
ASX – use ASX_Recorder_xxx() functions.
9.4.3.2
Linux APIs
HPI – use HPI_InStreamxxx() functions.
ASX – use ASX_Recorder_xxx() functions.
10 AUDIO FORMATS
The ASI6520 and ASI6522 support the following audio recording formats:
Format
8 bit unsigned PCM
16 bit signed PCM
32 bit floating point PCM (+/1.0)
MPEG-1 Layer 2
HPI format
HPI_FORMAT_PCM8_UNSIGNED
HPI_FORMAT_PCM16_SIGNED
HPI_FORMAT_PCM32_FLOAT
Windows format
WAVE_FORMAT_PCM, wBitsPerSample=8
WAVE_FORMAT_PCM, wBitsPerSample=16
WAVE_FORMAT_IEEE_FLOAT
HPI_FORMAT_MPEG_L2
MPEG-1 Layer 3 (MP3)
HPI_FORMAT_MPEG_L3
WAVE_FORMAT_MPEG
-fwHeadLayer=ACM_MPEG_LAYER2
-fwHeadMode=ACM_MPEG_SINGLECHANNEL,
ACM_MPEG_DUALCHANNEL, ACM_MPEG_STEREO
WAVE_FORMAT_MPEG
- fwHeadLayer=ACM_MPEG_LAYER3
-fwHeadMode=ACM_MPEG_SINGLECHANNEL,
ACM_MPEG_DUALCHANNEL, ACM_MPEG_STEREO
OR
WAVE_FORMAT_MPEGLAYER3
Cards do not support 8 channels of MP3 recording.
NOTE – for maximum efficiency, you must use one sample rate for all streams and set the global sample rate of
the card to this rate.
10.1 Volume
The Volume control allows the audio signal’s gain to be altered in the range of –100 to +20dB.
10.1.1 Interface
Figure 6. A Volume of a Player in ASIControl.
Left and Right display boxes:
Displays the gain settings that the slider bars are set to.
Slider Bars:
Click on the bar with the mouse and drag to desired gain. Once the bars are selected, the left and right arrow
keys can also be used to change the settings.
Lock:
When checked, locks the left and right channels to the same gain value. When unchecked, allows the left and
right channels to have independent gains. (Note that if an adapter is in SSX2 mode, the Player volumes cannot
be unlocked to move the left and right channels independently.)
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Mute:
Check this box to mute the volume.
Fade:
When pressed, automatically fades the volume to the opposite end of the scale.
10.1.2 Developer
10.1.2.1 Windows APIs
Wave/Mixer – MIXERCONTROL_CONTROLTYPE_VOLUME
This is a Windows standard volume control. Settings are in the range of 0 to 65535, where 0 completely mutes
the output and 65535 is the maximum volume.
HPI – HPI_Volume APIs.
ASX – ASX_Volume APIs.
DirectSound – TBD.
10.1.2.2 Linux APIs
HPI –HPI_Volume APIs.
ASX –ASX_Volume APIs.
ALSA – TBD.
10.2 Meter
Meters in ASIControl are located on audio nodes and display the audio level as the audio signal passes through
the node. Most AudioScience devices return both RMS and peak level readings and ASIControl displays both
simultaneously.
10.2.1 Interface
Figure 7. A stereo peak meter display. The RMS is the green bar and the peak is the yellow bar.
To the right of the peak meter is the absolute readings in dBFS. These can be useful when testing input tones of a
specific known level.
10.2.2 Developer
10.2.2.1 Windows APIs
Wave/Mixer – Meters are read using mixerGetControlDetails() on a control of type signed and with type “Peak”
the name “Peak Meter”. A minimum value is 0 and maximum is 32767. The interface returns the peak readings
only, not the RSM level. It confirms to expected Windows functionality.
HPI – Meters are read using the HPI_Meterxxx() API.
ASX – Meters are read using the ASX_Meter_xxx() API.
DirectSound – TBD.
10.2.2.2 Linux APIs
HPI – Meters are read using the HPI_Meterxxx() API.
ASX – Meters are read using the ASX_Meter_xxx() API.
ALSA – TBD.
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10.3 Channel_Mode
The channel mode is a mechanism for handling mono to stereo conversions and directing the output to either left
or right channels, as well as outputting left to stereo and right to stereo.
10.3.1 Interface
Figure 4. ASIControl view of a player’s channel mode control.
Default playback of either mono or stereo files causes audio to be output from the player on both the left and right
audio channels. The channel mode control can allow the audio to be directed to either the left only or the right
only. Select a channel mode setting from the dropdown list.
Valid settings are:
Normal – left channel out left channel, right channel out right channel
Left
Right
Left
Right
Swap – left channel out right channel and right channel out left channel
Left
Right
Left
Right
Left_to_stereo – left channel out to both left and right channels
Left
Right
Left
Right
Right_to_stereo – right channel out to both left and right channels
Left
Right
Left
Right
Stereo_to_left – left and right channels out to left channel
Left
Right
+
Left
Right
Stereo_to_right – left and right channels out to right channel
Left
Right
+
Left
Right
The Stereo_to_left and Stereo_to_right operations perform a sum of the left and right channels and then divides
the result by 2.
10.4 ClockSourceIn
In the topology pane of ASIControl, click on Clock Source 1
and in the node pane, select where the adapter is to get its clock source from using the Clock Source dropdown
list, as well as the sample rate to use if clocking from adapter.
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ASI6520, ASI6522
Note that for CobraNet and Livewire devices, the sample rate is fixed at 48kHz.
10.4.1 Interface
Figure 5. Clock Source information as seen in ASIControl.
Local Rate:
Select from the dropdown list the supported rates of the adapter.
Clock Source:
From the dropdown list, select the source for the adapter’s clocking. Selections, depending on the adapter,
include:
- Local – adapter rate is used; select a supported sample rate in Local Rate dropdown list
- Word – Word clock from Word clock BNC connector on digital cable loom (or BOB1024)
- WordHeader – Word clock from header on adapter (ASI61xx only)
- AES/EBU Sync – AES/EBU Sync from AES/EBU Sync XLR connector on digital cable loom (or
BOB1024)
- AES/EBU In 1-4 – rate taken from specific digital input
- AES/EBU Auto – rate taken from first valid digital input; looks at digital input 1 first, then up to digital
input 4
- Blu link
Adapter Rate:
<end>
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