User manual M-AUDIO O2

[. . . ] O2 User Guide English Introduction Congratulations on your purchase of M-Audio's O2. The O2 follows in the footsteps of the mobile USB MIDI controller that started it all--the Oxygen8. Small enough to fit in a bag along with your laptop, the slim-line M-Audio O2 is perfect for throwing down bass lines, programming drum patterns, triggering effects and tweaking virtual studio parameters--anywhere, anytime. You get 25 full-size, half-action, touch-sensitive keys, along with eight fully assignable knobs, 8 fully assignable buttons and other real-time control features for performance and programming. [. . . ] It is also possible to set the button to send one value when you press it, and another value when you release it. This sets the button up for MIDI CC (On/Off) mode, as shown in Appendix B. Assign the two toggle values for press (DATA 3) and release (DATA 2) as described above. Program Changes Send out a program change message to the sound card, sound module, instrument or other MIDI device that will receive this standard MIDI message. Type in the program number you wish to send, using the numerical data entry keys, or the Preset +/- buttons. Press the ENTER key to confirm. The assignable buttons can be programmed to send out fixed program messages to individual MIDI channels. For further information regarding this method, please refer to the "MIDI Messages Explained" section of this manual Bank Changes If the receiving device has more than 128 programs, access the additional banks by sending out Bank Change LSB and MSB messages. Type in the bank number you wish to send, using the numerical data entry keys, or the Preset +/- buttons. Press the ENTER key to confirm. Please check the documentation for your receiving device to ensure that it will respond to these messages. For more information about LSB and MSB, please refer to the "MIDI Messages Explained" section of this manual. RPN/NRPN, GM 1&2, Sys Ex and Other Messages The standard MIDI controller numbers range from 0 to 131. The list of MIDI CC's that can be assigned to the controllers of the keyboard has been extended to include RPN/NRPN, MMC, and General MIDI 1&2 Sys Ex messages. These advanced messages are as easily programmed by entering values 132 to154 when programming MIDI CCs. The charts in Appendix B show which number corresponds to each message. To program the values required for these advanced messages, press the ADVANCED FUNCTION button to enter Program Mode. After entering Program Mode, press the DATA 1, DATA 2 or DATA 3 button. For more information, please refer to Appendix B. 7 Assigning MMC Control to a Button 1. This is the number that corresponds to the MMC instruction, as per the chart in Appendix B. For more information about this, please read "the About Sys Ex Messages & Device ID" section later in the manual. Enter a number from the chart below to select the MMC message you want: Number 01 02 03 04 05 06 07 08 09 10 11 12 13 STOP PLAY MMC Command DEFERRED PLAY FAST FORWARD REWIND RECORD STROBE RECORD EXIT RECORD PAUSE PAUSE EJECT CHASE COMMAND ERROR RESET MMC RESET Assigning RPN/NRPN to a Fader/Rotary Controller Note: For a detailed description of RPN/NRPN data, see the "RPN/NRPNs Explained" section later in the manual. While the display is flashing, enter controller 132 for RPN Coarse, 133 for RPN Fine, 134 for NRPN Coarse or 135 for NRPN Fine using the numerical data entry keys or Preset +/- buttons. Many data sheets for synths make use of NRPN messages and will give the MSB and LSB values that should be entered for DATA 3 and DATA 2 (See Appendix F). Some manuals may only give the hex values, but the M-Audio O2 requires the decimal value be entered. Convert hexadecimal values to decimal values using the windows calculator; select Scientific mode, select Hex, then enter the hexadecimal value needed to convert. [. . . ] Latency with MIDI signals is due to the software application you are using. The software then completes a large number of complex calculations in order to produce the sound you hear­all this takes time. We strongly recommend a proper soundcard. Refer to www. m-audio. com for a selection of USB, PCI and FireWire audio cards. If you already have an adequate sound card, try reinstalling the latest drivers for the sound card, or try reducing the buffer sizes of the audio drivers. 11 Contact M-Audio If you have any questions, comments or suggestions about this or any M-Audio product, we invite you to contact us by using the following information: M-AUDIO U. S. [. . . ]