User manual M-AUDIO AP192 QUICK STARTED V1

[. . . ] Product features, specifications, system requirements, and availability are subject to change without notice. Guide Part Number 9329-65108-00 REV A 05/11 Documentation Feedback At Avid, we are always looking for ways to improve our documentation. If you have comments, corrections, or suggestions regarding our documentation, email us at techpubs@avid. com. contents Chapter 1. 1 System Requirements and Compatibility . [. . . ] S/PDIF If you have connected a S/PDIF device to your Fast Track C400 and would like to use that device as the master clock source, select the S/PDIF option. This will make Fast Track C400 clock to the external device's clock. In Windows Vista, when using the Fast Track C400 WDM/MME (i. e. , non-ASIO) drivers, the sample rate of the interface (and your audio software) is always determined by this drop-down menu. Your selection in this menu is the only item that will appear in your audio application. For example, if you select "44. 1kHz" in this menu, your audio application's control panel will only display "44. 1kHz" and you will not be able to select any other rates from within the application. When the sample rate is locked to an external digital clock source (S/PDIF is selected as the clock source), the Sample Rate drop-down menu will be greyed out while displaying the incoming sample rate. When S/PDIF is selected as the clock source, the Sample Rate drop-down menu will be greyed out while displaying the incoming sample rate. If S/PDIF is set as the clock source and Fast Track C400 is unable to detect, or lock to the external clock source, a message will appear beneath the Clock Source drop-down menu saying: "External clock not detected, Sample Rate fixed at 48kHz. " Buffer Size (Windows only) This menu sets the size of the input and output buffers on Fast Track C400. Buffers are used to help keep audio hardware and software running smoothly by processing audio in groups of samples rather than one sample at a time. Due to variations between computer hardware and software, it is impossible to recommend a single optimum setting for all systems. It may be necessary to experiment with various settings until you find the best buffer size for your system. The goal of setting a buffer size is to reduce it as much as possible without hearing any clicks, pops, or other glitches. If the buffer size is too small, the computer will not be able to make all the required audio calculations in time, and you will hear pops, clicks, and stuttering in your audio streams. On the other hand, if the buffer size is set too high, your computer will process audio without incident, but your software will feel sluggish and unresponsive. Sample Rate This drop-down menu sets the sample rate of Fast Track C400. Note that when using the interface with an ASIO or CoreAudio application, the sample rate can also be determined by your audio application. Keep in mind that setting or adjusting a monitor mixer will not affect the signal that is recorded into your software. For example, you'll still be able to record a channel while its corresponding stereo mix channel is muted. You won't hear the part through the monitor mixer as it is being recorded, but it will still record into your software and play back properly. Chapter 5: The Driver Control Panel 25 Using the Monitor Mixer The Monitor Mixer is located in the main view of the Driver Control Panel and is divided into four main sections: · Hardware Inputs · Software Returns · Effects · Master Hardware Inputs Software Returns Signal Meter Pan Solo Mute Master Channel Fader Channel Label Link Effects Hardware Inputs The Hardware Inputs section is where the Mic/Line and Instrument inputs are monitored, as well as the S/PDIF input of Fast Track C400. Hardware Inputs 1­2 are the analog inputs, and Hardware Inputs 3­4 are the S/PDIF input L/R. 26 Fast Track C400 User Guide Software Returns The Software Returns section is where the audio coming back from your audio application is monitored. Software Returns 1 and 2 will be the default stereo output from the software. Pan The Pan knobs control the position of a channel's audio signal in the stereo image of the monitor mix (double-click the knob to return pan to center). Link The Link buttons connect stereo pairs of knobs or faders (and also links the corresponding FX Send knobs), so that adjusting either channel (left/right) adjusts the other side identically. Links buttons Solo Each Solo button lets audio be monitored for the channel of which it is a part, while simultaneously muting all other Hardware Input channels and Software Returns (except for those that also have their Solo buttons activated). Pan controls are unaffected by linking two channels. Mute The Mute buttons are used to individually turn off audio monitoring for each channel in the monitor mix. Effects The Effects section is where you set up "sendand-return" configurations, and select the effects that you apply to the Hardware Inputs and/or Software Returns. Channel Faders The Channel Faders control the monitoring volume level of each channel in the monitor mix. Hardware Input FX Sends FX Sends are shared by all Stereo Mixes, unless "Post-Fader Stereo Mix 1" is chosen in the Setup pop-up menu. Channel Labels By default, the Channel Labels show the input name of each channel, except for the Master fader pair (which is labeled L/R by default). Clicking on a Channel Label gives you a cursor, allowing you to type in your own custom channel name (such as "guitar, " "vocals, " etc. ). The Channel Labels also display the signal level (in dB) while a fader is being adjusted. Software Return FX Sends FX Sends are shared by all Stereo Mixes, unless "Post-Fader Stereo Mix 1" is chosen in the Setup pop-up menu. FX Returns These knobs control how much of the Effect audio output will be mixed in with the monitor signal Master L/R outputs. Unlike sends, FX Returns are individually adjustable for each monitor mix. The Clip LED will show clipping if the input to the FX is clipping and if the output is clipping. Chapter 5: The Driver Control Panel 27 Effect The Effect drop-down menu is used to select the effect to be applied to the Hardware Inputs and/or Software Returns. There are eight available reverb types: Three room reverbs, two hall reverbs, a plate reverb, delay, and an echo. These effects can be customized by using the following three controls: Duration This knob controls decay time (for the reverbs) or delay time (for delay and echo). [. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures: · Reorient or locate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help. [. . . ]