E-Mu SP1200 Bedienungsanleitung PDF herunterladen (Seite 98)

APPENDIX

Receiving a sound dump from an external device to the SP 1200 with the MMA sample

dump.

There are two ways an SP 1200 can be made to receive a sound dump over MIDI:

1. SP 1200 can receive a “Sound Dump Header” exclusive from an external device,

(hereafter called the “Sender”), specifying a sound number (0 to 31).

2. Manually, from the front panel “Special” function (24), which sends a “Dump Re-

quest” out MIDI for the specified sound. This may or may not cause a sound dump,

depending on what the SP 1200 is connected to.

The sound being received will replace the existing sound in the SP 1200, so the first thing

the SP 1200 does is check if the specified sound exists:

• If sound doesn’t exist, (size = 0), SP 1200 aborts, nothing happens.

• If sound length is non-zero, dump continues.

• SP 1200 then displays “Receiving Sound Data over MIDI” on it’s LCD.

• SP 1200 then sends an “ACK” (with packet# = 00, although Sender should ignore),

to let Sender know that header was received OK.

• SP 1200 will now poll it’s MIDI input line, waiting for data packet #00.

• Sender should then send the sound dump in a series of “MMA Data Packets”, start-

ing with packet # 00. After SP 1200 receives packet, it responds:

ACK, if packet was not garbled and packet # and checksum were correct. SP 1200

will then wait for the next packet.

CANCEL, if anything but an ACK is seen, or nothing at all is seen within the

timeout period of 5 seconds. SP 1200 then displays “Sound Dump Bad, Press

Enter”, and returns to normal operation.

• If Sender sends a WAIT instead of a data packet, SP 1200 will reset it’s timeout

counter (5 seconds) and look for the same packet again.

• Note that SP 1200 will accept only as many bytes as are currently allocated for that

sound in the SP 1200. If fewer than that many are sent, SP 1200 will fill the remainder

with silence. If more than that are sent, SP 1200 will send CANCEL on the last packet

it cares about, and ignore any subsequent packets.

• If all packets received OK, SP 1200 will display “Sample Dump Good Press Enter”

and return to normal operation. If something was bad, SP 1200 will display “Sample

Dump Bad Press Enter”, and return to normal operation.

• Every 8 packets sent, SP 1200 will toggle an asterisk on the LCD.

1 2 ... 93 94 95 96 97 98 99 100 101 102 103

Keine Kommentare

E-Mu SP1200 Bedienungsanleitung Seite 98