Intel Fireface 800 manual Low Latency under MME Buffer Size Adjustment

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12.3 Low Latency under MME (Buffer Size Adjustment)

Under Windows 95 or 98, the MME buffer size was nothing to worry about. Latencies below 46 ms were not possible. Meanwhile both computers and operating systems have become much more powerful, and with Windows 2000/XP latencies far lower can be used. SAWStudio and Sonar allowed to use such low settings from the start. Sequoia was updated in version 5.91, WaveLab in version 3.04.

In the Settings dialog the DMA buffer size is set using the list box Buffer Size (Latency). Val- ues between 48 and 256 samples are available. This setting is valid for MME, ASIO and GSIF at the same time, with values above 256 only effecting ASIO. Our test computers allow to use even 48 samples without clicks, but will show a higher basic CPU load then. Therefore we rec- ommend to use at least 64 samples. Please note that this setting only defines the buffer size of the hardware. The true and effective latency is configured within the MME application!

Attention: the DMA buffers must not be larger than the application's buffers. Playback will be stuttering and audio will be distorted.

Example: when you set the Fireface to 256 you can't use 128 in any program. But setting the MME buffer to 128 allows to use 128 and all higher values within the software.

Please also note that this is a you're welcome to try feature. We can't guarantee that you will be able to use 3 or 6 ms with MME. Simply check out by yourself which lowest setting your system and software allows. Some motherboards with insufficient PCI bandwidth (especially VIA based) suffer from crackling at settings below 512. Be sure to set the buffer size to 512 or higher in such a case (or get yourself a new motherboard…).

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User's Guide Fireface 800 © RME

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Contents Most powerful FireWire audio interface ever TotalMix Bit / 192 kHz SyncAlignZLMSyncCheck SteadyClockGeneral Installation and Operation WindowsInstallation and Operation Mac OS Stand-Alone Operation, Connections and TotalMix Technical Reference Mains Important Safety InstructionsInstallation Users Guide Fireface 800 RME General Introduction Package ContentsBrief Description and Characteristics System RequirementsConnectors and Front Panel First Usage QuickstartPart Number Description AccessoriesQuick Start Trademarks WarrantyAppendix Users Guide Fireface 800 RME ISO CE / FCC ComplianceRoHS Users Guide Fireface 800 RME Installation and Operation Windows Driver and Firmware Hardware InstallationDriver Installation Desktop ComputerFirmware Update Driver UpdateDeinstalling the Drivers Configuring the Fireface Settings dialog GeneralInputs Phantom PowerBuffer Size Limit BandwidthSyncCheck Clock ModeWord Clock Out OptionsSettings dialog DDS Clock Modes Synchronization Application examplesAvailable Settings Limit BandwidthOperation and Usage PlaybackMultichannel DVD-Playback AC-3/DTSAC-3 / DTS Low Latency under MME Buffer Size Adjustment Fireface Analog 1+2 Fireface Analog 1+2 MMEASIO-Multiclient Multi-Client and Multi-Channel using WDMMulti-client Operation Digital Recording Operation under Asio Analog RecordingOperation under Gsif Gigasampler Interface Known ProblemsCommon Problems Windows 2000/XPUsing more than one Fireface DIGICheck Hotline Troubleshooting 8 Adat channels don’t seem to workInstallation Diagrams Channel Routing Asio at 96 kHzChannel Routing MME at 96 kHz Users Guide Fireface 800 RME Mac OS X Installation and Operation Driver Firmware Update Configuring the Fireface Level Level OutAutoSync Ref Settings dialog DDS Clock Modes Synchronization Limit Bandwidth Midi doesnt work Mac OS X FAQRound about Driver Installation Supported Sample Rates Repairing Disk PermissionsFireWire Compatibility Various InformationMulticard Operation Possible causes for a Fireface not workingDiagram Channel Routing at 96 kHz Users Guide Fireface 800 RME Stand-Alone Operation, Connections and TotalMix Stand-alone Operation Microphone / Line Front Analog InputsLine Rear Reference DBFS @ HeadroomSpeaker Emulation InstrumentDrive Line HeadphonesAnalog Outputs Spdif Digital ConnectionsAdat Special Characteristics of the Spdif Output MidiInput Word ClockWord Clock Input and Output OutputTechnical Description and Usage Cabling and Termination OperationTotalMix Routing and Monitoring OverviewUsers Guide Fireface 800 RME User Interface Elements of a Channel Tour de TotalMixUsers Guide Fireface 800 RME Submix View Mute and SoloQuick Access Panel PresetsPreset Preset BanksMonitor Panel PreferencesStereo Pan Law Editing the NamesMain Monitor Hotkeys Menu Options Level Meter TotalMix The Matrix Elements of the Matrix ViewAsio Direct Monitoring Windows only TotalMix Super-FeaturesAdvantages of the Matrix Delete Routings Selection and Group-based OperationCopy Routings to other Channels Recording a Subgroup Loopback Recording a Softwares playback Using external Effects DevicesMixing several input signals into one record channel MS Processing Element Midi Remote ControlMapping Meaning in TotalMixSetup Simple Midi Control Preset 3 38 / 56 / #GPreset 5 3A / 58 / #A Monitor Main 3E / 62 / DLoopback Detection Meaning in Fireface Stand-Alone Midi ControlMackie Control Protocol Element Meaning in Fireface Simple Midi ControlUsers Guide Fireface 800 RME Technical Reference Tech Info Technical Specifications AnalogDA Stereo Monitor Output Phones DigitalDA, Line Out 1-8, rear Digital Inputs Adat OpticalTransfer Modes Resolution / Bits per Sample Windows only Digital OutputsTechnical Background Lock and SyncCheckOversampling Latency and MonitoringHow much Zero is Zero? Sample frequency kHz 44.1 88.2 176.4 192Core Audios Safety Offset FireWire AudioSafety Buffer Number of Channels and Bus Load Limit Bandwidth 48 kHz 96 kHz 192 kHz FW-KanäleQS Quad Speed Analog DS Signal PortDS Double Speed Byte Mode Bit Type AES3-1992 IECNoise level in DS / QS Mode SteadyClockBlock Diagram Fireface XLR jacks of analog inputs Connector PinoutsTRS jacks of analog input / output TRS Phones jack

Fireface 800 specifications

The Intel Fireface 800 is a powerful audio interface celebrated for its high-performance capabilities and versatility in both studio and live settings. Designed to cater to the needs of musicians, producers, and sound engineers, it stands out with its rich feature set and reliable technology.

One of the defining features of the Fireface 800 is its support for an impressive 26 input and 28 output channels. This extensive I/O configuration facilitates seamless integration with a wide variety of audio production setups, allowing users to record multiple instruments simultaneously or create complex routing scenarios. The unit also boasts top-notch analog and digital converters, ensuring pristine sound quality with a dynamic range that captures the nuances of any audio source.

In terms of connectivity, the Fireface 800 is equipped with both FireWire and USB ports, making it compatible with a range of computers and devices. The device utilizes the FireWire 800 protocol, which delivers higher data transfer rates compared to its predecessor. This efficient transfer capability is crucial for maintaining audio fidelity and reducing latency, making it an ideal choice for real-time monitoring and recording.

The Fireface 800 also features standalone operation capabilities, functioning independently of a computer when needed. This is particularly useful for live performances, where reliability and reduced setup complexity are essential. Users can easily connect microphones, instruments, and other equipment directly to the Fireface 800, making it a versatile tool for a variety of scenarios.

With its low-latency driver technology, the Fireface 800 ensures smooth performance even when handling demanding audio tasks. Its advanced ADAT and S/PDIF digital inputs and outputs provide further flexibility for connecting other gear, such as additional preamps and effects processors.

Another noteworthy characteristic of the Fireface 800 is its robust build quality. Designed for regular use in professional environments, the unit features a rugged metal chassis that can withstand the rigors of transport and daily use. This ensures longevity and consistent performance for audio professionals who depend on reliable equipment day in and day out.

In summary, the Intel Fireface 800 is a versatile and powerful audio interface that caters to a wide spectrum of audio production needs. With its extensive I/O capabilities, high-quality converters, reliable connectivity options, and robust design, it continues to be a popular choice among audio professionals striving for excellence in their work.
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