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[jdvorak]

I am a newbie, and have just purchased my first computer to be used as a music server.  I am having a problem in that I am getting snaps and pops when attempting play back of primarily 24bit/96khz flac files.  The pops will happen 2 to 3 times a minute in the middle of songs. Usually pops, sometimes very loud sharp snaps.  There are many fewer pops when playing ripped cd's 16bit/44.1 khz.

Configuration
Computer:
Shuttle XS35GS V3 low power mini computer
Intel NM10 chip set
Intel® Atom™ D2550 1.86GHz dual-core processor
4GB DDR3 memory
Audio Card: Integrated IDT 92hd81
Windows 8 32bit OS
Currently no virus scan software
All files are saved locally on SAMSUNG, 500GB 840 Series SSD
JRiver and Adobe Reader are the only programs I have installed on this computer.

DAC:
Classe CP-800 DAC/PreAmp
Asychronus USB
Set as default with "Allow applications to take exclusive control of this device" & "Give exclusive mode applications priority"

JRiver:
JRiver 19.0.54
These are the settings that are working best for me.
WASAPI Event Style
Open device for exclusive access
PLay a little silence on DoP stop
Bitdepth - Automatic
Buffering _ 100 milliseconds

No output formatting
Bitstreaming None
Prebuffering 20 seconds
Play silence at startup for hardware synchronization 1 second
Play files from memory
No Plug Ins
I can use the same settings playing the same files using my Intel I7/Windows 7 64 bit HP Elite Book laptop and I have no problems - sounds great.
I would appreciate any help you can give me.

JRiver System Info
http://yabb.jriver.com/interact/index.php?topic=84257.0
Media Center
    Install Path: C:\Program Files\J River\Media Center 19\
    Interface Plugins: TiVo Server (not running)
    JRMark: 665 (version 19.0.54)
    Library: 1488 files, 310 KB in library, 24.0 MB in thumbnails
    Resources: 24.4 MB memory, 236 handles
    Version: 19.0.54.0
Memory & CPU
    CPU features: Atom, MMX, SSE2, SSE3, SSSE3
    Free Physical Memory: 2.1 GB
    Total Memory: 3.0 GB
Audio inputs and outputs
    Speakers (CP-800) (driver 6.2.9200.16384)
    Speakers / Headphones (IDT High Definition Audio CODEC) (driver 6.2.9200.16384)
CDROM
    HL-DT-ST BDDVDRW CT40N (driver 6.2.9200.16384)
Computer
    ACPI x86-based PC (driver 6.2.9200.16384)
Digital Media Devices
    DHC-40.2 (driver 1.0.0.0)
DiskDrive
    Generic Flash Disk USB Device (driver 6.2.9200.16384)
    Samsung SSD 840 Series (driver 6.2.9200.16384)
Display
    AMD Radeon HD 6430M (Microsoft Corporation- WDDM v1.20) (driver 8.97.10.6)
hdc
    Intel(R) ICH7R/DH SATA AHCI Controller (driver 10.8.0.1003)
HIDClass
    HID-compliant consumer control device (driver 6.2.9200.16384)
    HID-compliant consumer control device (driver 6.2.9200.16384)
    HID-compliant consumer control device (driver 6.2.9200.16384)
    HID-compliant device (driver 6.2.9200.16656)
    HID-compliant device (driver 6.2.9200.16656)
    HID-compliant device (driver 6.2.9200.16656)
    HID-compliant device (driver 6.2.9200.16656)
    HID-compliant device (driver 6.2.9200.16656)
    USB Input Device (driver 6.2.9200.16656)
    USB Input Device (driver 6.2.9200.16656)
    USB Input Device (driver 6.2.9200.16656)
    USB Input Device (driver 6.2.9200.16656)
    USB Input Device (driver 6.2.9200.16656)
Keyboard
    HID Keyboard Device (driver 6.2.9200.16548)
    HID Keyboard Device (driver 6.2.9200.16548)
MEDIA
    CP-800 (driver 6.2.9200.16664)
    High Definition Audio Device (driver 6.2.9200.16384)
    High Definition Audio Device (driver 6.2.9200.16653)
    IDT High Definition Audio CODEC (driver 6.10.6417.0)
Monitor
    Generic Non-PnP Monitor (driver 6.2.9200.16548)
Mouse
    HID-compliant mouse (driver 6.2.9200.16548)
MTD
    Realtek PCIE CardReader (driver 6.2.8400.27025)
Net
    Realtek PCIe GBE Family Controller (driver 8.1.1020.2011)
    Realtek RTL8188CE Wireless LAN 802.11n PCI-E NIC (driver 1005.23.622.2011)
Operating System
    Microsoft Windows 8 32-bit
Print queues
    Fax (driver 6.2.9200.16384)
    HP6928EB (HP Photosmart Premium C309g-m) (driver 6.2.9200.16384)
    Microsoft XPS Document Writer (driver 6.2.9200.16384)
    Root Print Queue (driver 6.2.9200.16384)
Printer
    HP Photosmart Premium C309g-m Class Driver (driver 6.2.9200.16384)
Processor
    Intel(R) Atom(TM) CPU D2550   @ 1.86GHz (driver 6.2.9200.16451)
    Intel(R) Atom(TM) CPU D2550   @ 1.86GHz (driver 6.2.9200.16451)
    Intel(R) Atom(TM) CPU D2550   @ 1.86GHz (driver 6.2.9200.16451)
    Intel(R) Atom(TM) CPU D2550   @ 1.86GHz (driver 6.2.9200.16451)
SCSIAdapter
    Microsoft Storage Spaces Controller (driver 6.2.9200.16604)
Software devices
    DVORAK-LAPTOP: jdvorak: (driver 6.2.9200.16384)
    HP6928EB (HP Photosmart Premium C309g-m) (driver 6.2.9200.16384)
    Microsoft Device Association Root Enumerator (driver 6.2.9200.16384)
System
    ACPI Fan (driver 6.2.9200.16384)
    ACPI Fixed Feature Button (driver 6.2.9200.16384)
    ACPI Power Button (driver 6.2.9200.16384)
    ACPI Sleep Button (driver 6.2.9200.16384)
    ACPI Thermal Zone (driver 6.2.9200.16384)
    Composite Bus Enumerator (driver 6.2.9200.16384)
    Direct memory access controller (driver 6.2.9200.16384)
    High Definition Audio Controller (driver 6.2.9200.16420)
    High Definition Audio Controller (driver 6.2.9200.16420)
    High precision event timer (driver 6.2.9200.16384)
    Intel(R) 82801 PCI Bridge - 2448 (driver 6.2.9200.16384)
    Intel(R) 82802 Firmware Hub Device (driver 6.2.9200.16384)
    Intel(R) 82802 Firmware Hub Device (driver 6.2.9200.16384)
    Intel(R) Atom(TM) Processor D2xxx/N2xxx PCI Host Bridge #4 - 0BF3 (driver 9.2.2.1031)
    Intel(R) N10/ICH7 Family PCI Express Root Port - 27D0 (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family PCI Express Root Port - 27D2 (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family PCI Express Root Port - 27D6 (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family SMBus Controller - 27DA (driver 9.1.1.1016)
    Intel(R) NM10 Family LPC Interface Controller - 27BC (driver 9.1.1.1022)
    Microsoft ACPI-Compliant System (driver 6.2.9200.16420)
    Microsoft Basic Display Driver (driver 6.2.9200.16384)
    Microsoft Basic Render Driver (driver 6.2.9200.16384)
    Microsoft System Management BIOS Driver (driver 6.2.9200.16384)
    Microsoft Virtual Drive Enumerator (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Motherboard resources (driver 6.2.9200.16384)
    Numeric data processor (driver 6.2.9200.16384)
    PCI Express Root Complex (driver 6.2.9200.16384)
    Plug and Play Software Device Enumerator (driver 6.2.9200.16384)
    Programmable interrupt controller (driver 6.2.9200.16384)
    Remote Desktop Device Redirector Bus (driver 6.2.9200.16384)
    System board (driver 6.2.9200.16384)
    System CMOS/real time clock (driver 6.2.9200.16384)
    System timer (driver 6.2.9200.16384)
    UMBus Enumerator (driver 6.2.9200.16384)
    UMBus Enumerator (driver 6.2.9200.16384)
    UMBus Root Bus Enumerator (driver 6.2.9200.16384)
    Volume Manager (driver 6.2.9200.16384)
USB
    Generic USB Hub (driver 6.2.9200.16655)
    Intel(R) N10/ICH7 Family USB Universal Host Controller - 27C8 (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family USB Universal Host Controller - 27C9 (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family USB Universal Host Controller - 27CA (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family USB Universal Host Controller - 27CB (driver 9.1.1.1016)
    Intel(R) N10/ICH7 Family USB2 Enhanced Host Controller - 27CC (driver 9.1.1.1016)
    USB Composite Device (driver 6.2.9200.16655)
    USB Composite Device (driver 6.2.9200.16655)
    USB Composite Device (driver 6.2.9200.16655)
    USB Mass Storage Device (driver 6.2.9200.16632)
    USB Root Hub (driver 6.2.9200.16655)
    USB Root Hub (driver 6.2.9200.16655)
    USB Root Hub (driver 6.2.9200.16655)
    USB Root Hub (driver 6.2.9200.16655)
    USB Root Hub (driver 6.2.9200.16655)
VolumeSnapshot
    Generic volume shadow copy (driver 6.2.9200.16384)
    Generic volume shadow copy (driver 6.2.9200.16384)
    Generic volume shadow copy (driver 6.2.9200.16384)
    Generic volume shadow copy (driver 6.2.9200.16384)
    Generic volume shadow copy (driver 6.2.9200.16384)
WPD
    USB DISK (driver 6.2.9200.16384)
WSD Print Provider
    HP6928EB (HP Photosmart Premium C309g-m) (driver 6.2.9200.16384)

[Blaine78]

have you tried setting the computer's Power Plan settings (found in windows control panel) to High Performance?

[JimH]

Welcome to the forum.

Try the audio option called "Disable event style".  

[jdvorak]

Welcome to the forum.

Try the audio option called "Disable event style". 

have you tried setting the computer's Power Plan settings (found in windows control panel) to High Performance?

Thanks for your responses.

It does not play at all with "Disable event style."   

I changed the setting to high performance and that did not help.

When I run the JRiver Benchmark utility on the machine, it only gets a score of 664.  Does this machine not have the guts to stream bit perfect music through USB? 

When I look at Task Manager, I see JRiver only using 2% of cpu cycles at most.  The only other thing I see using cycles is "System Interrupts/Deferred procedure calls and interrupt service routines" at up to 4% - is this typical?

[JimH]

It's not a great machine, but you shouldn't have trouble playing music.

Try adjusting the audio settings for buffer in MC.  Smaller may be better.

There was a Microsoft hotfix for a USB problem.  I think there may be a link in the "Weird and Wonderful" thread on Interact.  It's in my signature.

[pluto7]

With Windows 7 for instance, the default parameter
of the sound card is 96 kHz, 24 bits. This will
need to be changed to 44.1 kHz.
Configuration of the Windows output
(regardless of the media player)
Connect a USB cable between your computer
and the USB port located on the back panel
of the CP-800.
• In the lower left corner of the screen,
click on the Windows logo.
• In the new window click on Control Panel.
• Select the Sound icon (speaker).
• The CP-800 will appear in the new window,
click on it in order to highlight it, then click
again.In the new window, click on the Advanced tab.


http://www.classeaudio.com/downloads/pdfs/CP-800-AppleWindowsGuide-final.pdf