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« on: September 21, 2017, 09:03:30 PM »https://www.sweetwater.com/sweetcare/articles/pops-clicks-distortion-during-playback-recording-m-audio-delta/
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I get Pops and Clicks or Distortion during Playback and Recording with my M-Audio Delta card in my Windows PC. What can I do about this?
Article #28670 Updated on Jan 2, 2008 at 12:00 AM
– Check if you have the most recent driver for your Delta Card installed. For this kind of problem we also recommend to try our latest Beta drivers if available.
– The interference is usually caused by Buffer-Components that are not running in Synch. There is a number of Hardware- and Software-Buffers. Here is a list of the Buffers that allow to change their settings:
– Adjusting the Buffer Sizes of the Delta card: Start with the smallest value and increase step by step (Delta Control Panel -> Hardware Settings -> DMA Buffer Size)
– Windows virtual memory: Set the same value for Minimum/Maximum (Control Panel-> System -> Advanced->Performance Options->Virtual Memory: z.B. 512/512)
– Windows File Cache Settings: Set the same value for Minimum/Maximum (Open the file System.ini -> in the section [vcache] -> MinFileCache=16384, MaxFileCache=16384)
– In Windows 9x/ME it might be helpful to disable the function MultiClient ASIO/EASI (Delta Control Panel -> Hardware Settings)
– Windows 2000/XP: If you are using ASIO software applications, the System Performance should be set to “Background Services” (Control Panel-> System -> Advanced -> Performance Options)
– In Windows XP, you should also adjust the graphic performance as follows: Control Panel -> System -> Advanced -> System Performance -> Settings -> “Adjust for best performance”
– When running Windows 2000/XP, in some cases the Standard-PC Mode brings better results than the ACPI-Mode. Change the mode by updating/changing the driver for “Computer” in Windows’ Device Manager. Attention! Switching from Standard PC back to ACPI in Windows XP is not possible. Do not attempt to switch Multi-processor Computers or Laptops to Standard PC mode. This mode is not supported on these computers (Control Panel -> System -> Hardware -> Device Manager -> Computer -> Properties -> Update driver -> Install from a list or specific location -> Don’t search I will choose the driver)
Additional Tips related to noise and interferences:
– Make sure that all the drivers for all devices installed in your computer are recent. Install an INF-Update (Driver Update for Windows). This update can be obtained from your Mainboard manufacturer. Install all available Windows Windows-Updates, e.g. for the USB-ports. Disconnect all USB devices and check if the problem still occurs.
– Check if a BIOS Update is available for your Computer’s Mainboard (fixes known problems with the Southbridge on Main Boards with VIA Chipsets)
– For Windows 95/98/ME we recommend to disable the “Auto Insert Notification”. (Control Panel -> System -> Device Manager -> CD-ROM -> Settings)
– Deactivate Task-Monitor programs installed by printers. These programs continuously check the status of your printer and are usually not necessary for the general operation of the printer.
– Under no circumstances use 100MHz and 133MHz RAM in the same Computer. Check if the problem still occurs when you are running your computer with only one RAM stick. We also got reports about clicking sounds caused by cheap, low quality RAM.
– IRQ sharing should be avoided is possible. Check the IRQ assignment to see if any device is using the same IRQ as your Delta Series card of if an IRQ higher than number 15 has been assigned to it (IRQs higher that number 15 are virtual IRQs which are shared with other physical IRQs (0-15)). (Start -> All Programs -> Accessories -> System Tools -> System Information -> Hardware Resources -> IRQs)
– Possibly, the Delta card is receiving interferences from another device. This might even be a disabled device, e.g. USB. Activate all disabled devices and check if they are using the same IRQ as your Delta card (Start -> All Programs -> Accessories -> System Tools -> System Information -> Hardware Resources -> IRQs). In this list, the only listing that may have the same value as the Delta card is the “IRQ Holder”. If the Delta card is sharing an IRQ with other devices than the “IRQ Holder”, you can fix that by physically moving the Delta card to another PCI slot in your computer.
– If a RAID Controller is used in your computer, it can be helpful to reduce it’s “PCI Bus Utilization” by using a software program provided by the Hardware manufacturer of the RAID controller). As an example, Promise RAID controllers can usually be reduced to about 75-80% by using the program “Promise FastCheck Monitoring Utility”.
– If your Main Board is using a VIA Chipset, it is necessary to download and install the latest VIA 4-in1-Driver (4.37 or higher). Additionally, it might be helpful to download and install the latest USB-filter driver. These drivers are usually included with the Driver CD of your Computer’s Main Board and should be installed immediately after the installation of the Windows operating system and before the installation of the driver for the Video-/Graphics card. The most recent VIA-Drivers are available at http://www.via.com.tw in the section Technical Support-> Drivers.
– If you are using USB devices on a Mainboard with a VIA Chipset running Win98SE, you should also install Microsoft’s UHCD-Update: http://support.microsoft.com/support/kb/articles/Q240/0/75.asp
– When using Main Boards with a KT133 or KT133A Chipset, using 100 MHz RAM or “No-Name” RAM is questionable. For these mainboards, only use Brand name RAM running at 133 Mhz and make sure that the SDRAM frequency is set to 133 MHz in your Computer’s BIOS.
When using Mainboards with VIA Chipsets, you should make sure the following recommended settings are made in your Computer’s BIOS:
– PCI Delay Transaction set to Disable, Off or Value=0
– PCI Master Read Caching set to Disable, Off or Value=0 (for KT133A Chipsets: Enable is OK)
– PCI Latency set to 32
– P2C/C2P Concurrency set to Disabled, Off or Value=0
Recommended Power Managment-Settings for Wake-On: Primary INTR: all Events Disabled