ENSONIQ ASR-10 Spécifications télécharger pdf (Page 95)

Sequencer and Audio Track Parameters

System Optimization Tips

Application Notes to Improve Performance:

Note that these are not required, but may improve situations where system bandwidth is being

limited by excess SCSI activity:

Mute the first Audio Track before recording the second. This will cut down on disk activity

during record.

When recording from the start of a sequence, record with a countoff. This allows one bar of

countoff time to verify recording files exist, instead of having to do this verification in real-time.

When Audio Track recording, mute unneeded sequence tracks.

Record Audio Tracks with a minimum timing reference, then copy over sequence tracks from

another sequence (or copy Audio Tracks over to the other sequence).

Mute Audio Tracks before recording sequence tracks.

For Audio Track bounce-down (assuming you’re bouncing-down Audio Track playback

only, and not sequence playback), set the SCSI ACCESS SPEED as high as possible.

Sequencer track playback may be compromised, but the AudioSamples will play back

smoothly, and since this what you are m-recording, the bounced-down data should be fine.

Again, mute the sequence tracks here, as well.

For 2-track playback, SCSI storage devices that were recently formatted will perform better

than a SCSI storage device that had a lot of data on it prior to Audio Track recording. This is

true even if the SCSI storage device has been defragmented. This is because data that resides

on the outer edges of the SCSI storage device will reduce the disk head movement.

The SCSI storage device manufacturer’s access times do NOT tell the whole story. Some SCSI

storage devices use highly intelligent caching schemes to greatly reduce the amount of disk

activity for the same amount of data transferred. Some SCSI storage devices have fast seek

times, but slow SCSI transfer times. Drives with segmented caches work much better for

multiple Audio Tracks.

Some SCSI storage devices will time out after several minutes of no use. This puts the SCSI

storage device into an idle state. The first request to the SCSI storage device while it is in this

state takes longer to process because the motor may not be up to full speed. If you try to go

into record, this may result in a MEMORY OVERFLOW message. If you go into play, this

may result in a SCSI ACCESS TOO SLOW message. Subsequent SCSI storage device activity

is then fine. To get around the idle state, simply reselect the sequence and prepare it (press

CENTER-YES)

This will wake the SCSI storage device up so the first real-time playback SCSI

transfer will be on time.

Audio Tracks recording or playing back at

44.1KHz

require much more SCSI activity than the

same sequence at

3OKH.z.

If the MEMORY OVERFLOW message occurs during recording at

@.lKHz, you may be successful recording at

3OKHz.

Again, this is all dependent on what

type of SCSI storage device is at the other end of the SCSI cable.

Follow all cabling tips in the

SF’-3

SCSI Manual, making the shortest possible path between

the ASR-10 and the SCSI storage device selected with the CONFIGURE AUDIO TRACKS

command, REC SCSI DRIVE parameter.

AudioSample Specs

l Each SONG + ALL SEQS (Project) file can have a maximum of 8192

AudioSamples.

l The map of contiguous blocks will allow approximately 500 fragments per sequence or song.

So if all AudioSamples were contiguous, this would allow up to 500 AudioSamples per

sequence or song. If each file consisted of two fragments, you could have up to 250

AudioSamples per sequence or song (fragmentation is entirely dependent on the data already

on the disk).

l Time limits per AudioSample (worst case): 80.1 minutes at 297KHz; 54.1 minutes at 441KHz.

ENSONIQ

ASK1

0 Version 3 Operating System

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 153 154

Commentaires sur ces manuels

Pas de commentaire

ENSONIQ ASR-10 Spécifications Page 95

Commentaires sur ces manuels

Produits connexes et manuels pour Pianos numériques ENSONIQ ASR-10