HANGZHOU BLUE WHALE MUSIC TECHNOLOGY CO.,LTD HANGZHOU WORLDE MUSIC ELECTRONIC CO., LTD
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Section 5: MIDI Information Specification
5.1 Program & Bank Changes Explained
The original GM MIDI Specification was designed to access only 128 different sounds using Program Change messages (0-127). As MIDI devices grew to be
more sophisticated and contain more sounds, Bank Change messages were included in the specification to allow for more than 128 sounds to be accessed.
Within each bank there are a possible 128 different sound patches that can be accessed using the standard Program Change command. Using the expanded
14-bit Bank Change command, there are now 16,384 banks available—each with 128 sounds patches. Technically speaking, the first 7 bits of the 14-bit Bank
Change message are sent in a single byte known as the Bank LSB. The last 7 bits define another byte known as the Bank MSB. The Bank LSB is the most
commonly used. This allows for 128 bank changes, and often there is no need to send a Bank MSB. You will find almost all MIDI devices respond to Program
Change commands and many are organized according to the GM listing. In all General MIDI devices, the different sounds are always organized in the same
way from device to device, so the piano sounds are in their particular place, the string sounds are in their place, the drum sounds and so on. All GM devices
(both hardware and software sound modules) are clearly labeled as such, so you know that their sounds are organized in the General MIDI structure. So
when a GM device receives a MIDI Program Change, it calls up a type of sound that you expect from the GM sound set. All non-GM devices call up unique
sounds from their memory upon receiving MIDI Program Changes. Since the sounds in a non-GM device are not arranged in a particular order, you need to
take a look at the device itself to see which sound you want and at which location in the memory it resides. Many VST instruments such as Native Instruments’
FM7 or the synth modules in Reason are non-GM devices.
Bank Change messages are useful when calling up sounds from a large library that may exist in a particular sound module or software synth. For
example devices that are built with Roland's GS specification or Yamaha's XG specification require you to specify a Bank Change in order to access the
extra voices and effects that these devices provide. Sending Program, Bank LSB and Bank MSB data is made simple using the Panda. Please consult
section 2.4 to see how this is done.
Section 6: Troubleshooting
The P-49/61/88 PRO has been designed to give you high performance MIDI control. It has been tested under a wide range of system and operating
conditions. However, there are virtually limitless numbers of operating scenarios, any of which could affect your system’s performance. Though this
section cannot cover all possible situations you may encounter, we would like to offer some suggestions for dealing with common problems.
If you are connecting to a computer, we recommend that you avoid connecting too many devices to your computer at the same time.
The more devices you have connected to the computer, the greater the load on the computer’s CPU. Although it is possible in theory to connect multiple
USB devices at the same time, doing so may degrade your system’s performance.
My P-49/61/88 PRO suddenly stopped working after having performed well since installation on a computer:
<Switch off the unit and leave it off for 10 seconds. Then restart your computer, power up your P-49/61/88 PRO and try again.
I have connected the P-49/61/88 PRO to my computer. When I press a key, there is a delay before I hear any sound.
This delay is known as latency. Latency with MIDI signals is caused at the computer and is not coming from the Panda. This may be due to the CPU load
of the soft-synth you are using. MIDI data is simply control data. MIDI data is read by the soft synth; the soft synth then completes a large number of
complex calculations in order to produce the sound you hear, and all of this processing activity takes time. If you already have adjusted the appropriate
parameters relating to latency on your sound card, try re-installing the latest drivers for the sound card, or try reducing the buffer sizes of the sound card.
If you are using a host application, check its buffer size settings as most applications allow for user adjustment to improve timing.
<PC only: If your soundcard supports ASIO or WDM, then please use these drivers. It is suggested that you’d better not use the MME driver which is
older and less efficient in design and will have a much higher latency. In the audio device settings, please select the ASIO driver if available.
Section 7: Technical Info
Caution:
Electro Static Discharge, Electrical Fast Transient and Conducted RF interference may cause the unit malfunctioning.
In such case, unplug the unit and plug it in again to restore normal operation.
Note: Your WORLDE product has been tested to comply with FCC Standards FOR HOME OR OFFICE USE. Modifications not authorized by the
manufacturer may void users authority to operate this device.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. 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 to correct the interference by one or
more of the following measures:
< Re-orient or relocate the receiving antenna.
< Increase the separation between the equipment and receiver.
< Connect the equipment to 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.
ASIO is a trademark of Steinberg Soft– und Hardware GmbH.
VST is a trademark of Steinberg Soft– und Hardware GmbH
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