Changes

Therefore, you can switch to different voices by switching to different transmitting <u>MIDI channels</u>,which may be more convenient than pointing and clicking on an instrument icon via the '''Reaper ''' or '''Cubase ''' applications (which are not free applications). Also, applications such as '''Bristol Organ allows a user to sync midi controller buttons or sliders (on the keyboard) to change control settings on the emulated organ''' by middle-clicking the mouse on the emulated keyboard's control knob and moving or activating the midi controller on the keyboard.Also, why pay for applications like Reaper or Cubase when you can accomplish the same task for free?!?

=== Hardware / Software Setup Information ===

... And by the way... as long as you keep net-book volume to acceptable output level, you shouldn't damage the amplifier. I asked posed this connection question to an experience a veteran "sound-guy " that has setup performance audio equipment for the likes of '''Moe Koffman''' and '''The Good Brothers''' back in his "younger days" and clearly . He states that, '''''"this shouldn't be a problem what-so-ever, just keep volume down in net-book end and adjust volume via the amplifier"'''''...

=== Setup Setting up / Configuration Installing / Configuring Network, Ubuntu Studio, and Jack System ===

* I "Tweaked" the appearance of my Gnome Desktop like running the '''Avant Window Navigator (docking panel appearance like Mac OSX)''', and '''removed the "old-style" gnome-panels'''. Here is a resource that I created to help: [ [[Replacing Panels with Docking Station (awn)]] ][[Image:awn-pic.png|thumb|right|550px|<b>Avant Window Navigator</b> gives a Mac OSX '''docking station''' appearance<br />(A welcome change from traditional panels). ] ]<br /><br />*'''NOTE:''' I had trouble when displaying my net-book on the data display in class. '''Every time I pressed a key, the screen would go blue and return display to my net-book.''' I thought it was attributed to Ubuntu, but all I needed to do was update (flash) my '''BIOS from v3010 to v3012'''. Refer to the section below labelled:<br />'''"Steps to Enhance CPU performance (Acer AspireOne a751h)"''' for a full set of procedures to solve this problem. It seems to have also solved the '''hibernation problem''', <u>and</u> also the problem of '''not displaying Python applets on my Avant Window Navigator docking tray...!''' <br /><br />

=== Using Ubuntu Studio for Live Performances === I will be making some assumptions here: first, I am using my '''M-AUDIO Keystation 61es Midi Controller keyboard''', and second, I am going to plug in directly from Net-book's headphone jack into the amplifier. ==== First, the Initial Setup ==== # '''Boot Net-book into Ubuntu Studio, and turn down the system volume''' to a lower level.# '''Plug M-Audio keyboard''' (via USB connector) into Net-book.# '''Plug Y-Adaptor into net-book's head-phone port''', '''and connect up RCA portion of cable to Y-Adaptor, and 1/4 inch end of cable to the input connector of amplifier''' (see to bottom of "Hardware/Software Information" for reference).# Refer to '''"Putting it All Together" with a Bash Shell Script "''' to learn how to automatically launch for performance session with the keyboard applications such as Qsynth and Bristol Organ. '''When you have created that Bash Shell script, launch your performance session, and wait until all of the applications are running, and that all of the connections have been made.''' ====A Few Words of Warning About MIDI Channels &amp; Bristol Organ ==== I have always wondered how Bristol Organ managed multiple keyboards. For example, the Bristol (Hammond) B3 organ has two sets of keyboards (upper and lower), and I was curious how to access the lower keyboard. The answer is easier that you think! '''When you issue the command to run the Bristol B3 organ with a midi channel, then the next higher midi channel will be reserved for the lower keyboard''' - totally awesome!... ... But '''if you didn't know that, and launched the Qsynth application using that extra midi channel, then don't be surprised if your Bristol B3 organ abruptly aborts... no wonder!''' Therefore, you have to do a little planning head, and reserve extra midi channels for any Bristol Organs that have multiple keyboards prior to assigning various midi channels...[[Image:midi1.png|thumb|right|220px|<b>Qsynth MIDI Channel Dialog Box</b>. Notice a maximum of 16 midi channels, but also the ability to store into separate presets for later use. '''Notice the both MIDI channels 3 and 4 reserved for by Bristol B3 organ''' (both keyboard registers), '''Midi channel 10 is usually reserved for percussion'''...]]==== Tweaking Qsynth to Play Different MIDI Channels / Sound-fonts ====  Before proceeding with this section, please familiarise yourself with how to use Qsynth and sound-fonts by reading another one of my WIKIs:<br />[ [[Quick & Simple - Setting up Jack Server and Q-synth]] ]. I will assume that you have a basic knowledge of using Qysynth, obtaining sound-fonts, and adding sound-fonts in Qsynth for the remainder of this section. I have see some misinformation regarding the use of sound-fonts with Qsynth. You can add in a lot of sound-fonts with Qsynth, and then assign them (either using a particular sound, or incorporating "sound banks") to midi channels. I am currently have assigned instruments to 10 midi channels (2 have been reserved for my B3 Organ. In addition, you can save these midi assigns as different "preset names" to be saved and loaded as needed during performance or practice.

One *perceived* problem that a typical "end-user" would face is having In order to assign MIDI channels in Qsynth, when you click the '''manually connectChannels''' (patch) various Devices (like a keyboard)button, with various keyboard emulators (like you will see the '''QsynthChannels dialog box''' and '''Bristol''' organ appear. Notice that this dialog box allows for a total of 16 midi channels (this is more than I require for a typical practice or performance). But it is important If you require more, you can save different midi instrument assignments to various profiles (perhaps to realise that these "graphical applications" are just convenient "front-ends" or user-friendly graphical representations of Linux commandsbe loaded between your sets).

Since they are Linux commandsSteps to Assignment Instruments:[[Image:midi2.png|thumb|right|300px|'''Assigning Instrument''' (program) to a '''Bank''' (i.e. "''SFID"'' or ''"Offset"'').]]# '''When adding sound-fonts into Qsynth, write-down the SFID number''' (i.e. Sound-font Identification number) - Do NOT close this dialog box quite yet!# Now, these commandhere's the trick: For each sound font, '''make certain that the "Offset" number corresponds to launch the same number as the SFID!'''# Now, '''click OK to save and make patches (connections)exit''' the sound-font dialog box.# If you are running Jack, and simply be added then you need to a file (called a '''restart the Jack engine'''. This will require that you manually connect the instruments in the "Jack Connections" dialog box. If this is "a pain", you could always quit all applications, and re-run your Bash shell scriptto launch your music session...# Go to the '')'Channels dialog box, and run like double-click on a midi channel'''.<br />I am selecting the next available '''channel - 13'''.# The '''Channel 13 Midi Channel Dialog box''' appears.# '''Select the Bank number''' (which corresponds to the Offset or SFID that you have written-down).# Then '''click on the program number to select an instrument''' (either as an desktop icon)depending on the sound-font, there may be only one to select, or a startwide variety if the sound-up program from bootfont is a bank of sounds).# '''!! NOTE: in order for the changes to take effect, you need to click the Save button; otherwise, all your changes will be lost!'''# You may need to restart the Jack engine and re-upestablish your connections.

'''For reference, here is a link to my Bash Shell script:That's it! Start performing!!''' [ [http://matrix.senecac.on.ca/~murray.saul/netbook.bash.txt txt] ]

For additional reference, '''here is My M-AUDIO keyboard allows me to easily change between midi channels by pressing the Advanced Functions button, and then pressing a link note on the keyboard that explains how above shell script works:corresponds to the midi channel''' [ coming soon ]. Easy-Breezy, and efficient! :)

=== Using Ubuntu Studio Here is a link to documentation of my M-AUDIO midi keyboard for Live Performances ===reference:

To be completed[ [http://www.m-audio.com/images/global/manuals/050505-KSSeries_UG_EN01.pdf http://www.m-audio.com/images/global/manuals/050505-KSSeries_UG_EN01.pdf] ]

'''Note:''' The ''Swamy sound-font editor'' allows me to build or modify sound fonts. s I must admit that I'm not an expert on sound-fonts.

==== Jack &amp; High CPU Usage (and Potential Recommended Solution) ====