Home » Archimedes archive » Acorn User » AU 1998-02 A.adf » PDScheme » ArtToSpr/WavePlayer/Help/TextHelp/2d-Buffer
ArtToSpr/WavePlayer/Help/TextHelp/2d-Buffer
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1998-02 A.adf » PDScheme |
| Filename: | ArtToSpr/WavePlayer/Help/TextHelp/2d-Buffer |
| Read OK: | ✔ |
| File size: | 06B8 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
+---------------------------------------------------------------------------+ | WAVE PLAYER | | � 1997, Matthew Wilson | +---------------------------------------------------------------------------+ | BUFFER OPTIONS | +---------------------------------------------------------------------------+ The buffer options window can be accessed by clicking on the little RAM chip icon in the bottom-left of the format options window. Again, at the top is the file type (if recognised), eg. 'Desktop Tracker'. The main icon indicates how much memory is used *per buffer*. As there are two buffers, the required memory is twice that shown. However, the slot size taken may be slightly more, due to a few bytes of header information. To combat this, set the buffer to something like 31Kb or 63Kb instead of 32Kb or 64Kb. The first two preset icons set the size of one buffer to one second�s and two seconds� audio respectively, according to the current frequency setting. This means that there will be a one or two seconds pause respectively, between loading the next part of the sample to play. The last two presets test the speed of the media, and set the size of one buffer so that the time spent loading is 10cs (0.10secs) or 50cs (0.50secs) respectively. (NB. On slow devices, such as floppies, the test may take a few seconds.) Clicking on the type menu icon brings up a list of recognised formats. Selecting one of these will make Wave Player attempt to read the sample in that format. This is useful if the sample has the wrong filetype.
00000000 2b 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |+---------------| 00000010 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00000040 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2b 0a 7c 20 |------------+.| | 00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000060 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 57 | W| 00000070 41 56 45 20 50 4c 41 59 45 52 20 20 20 20 20 20 |AVE PLAYER | 00000080 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000090 20 20 20 20 20 20 20 20 20 20 7c 0a 7c 20 20 20 | |.| | 000000a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000000b0 20 20 20 20 20 20 20 a9 20 31 39 39 37 2c 20 4d | . 1997, M| 000000c0 61 74 74 68 65 77 20 57 69 6c 73 6f 6e 20 20 20 |atthew Wilson | 000000d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000000e0 20 20 20 20 20 20 20 20 7c 0a 2b 2d 2d 2d 2d 2d | |.+-----| 000000f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00000130 2d 2d 2d 2d 2d 2d 2b 0a 7c 20 20 20 20 20 20 20 |------+.| | 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000150 20 20 20 20 20 20 20 42 55 46 46 45 52 20 20 4f | BUFFER O| 00000160 50 54 49 4f 4e 53 20 20 20 20 20 20 20 20 20 20 |PTIONS | 00000170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000180 20 20 20 20 7c 0a 2b 2d 2d 2d 2d 2d 2d 2d 2d 2d | |.+---------| 00000190 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000001d0 2d 2d 2b 0a 0a 20 20 54 68 65 20 62 75 66 66 65 |--+.. The buffe| 000001e0 72 20 6f 70 74 69 6f 6e 73 20 77 69 6e 64 6f 77 |r options window| 000001f0 20 63 61 6e 20 62 65 20 61 63 63 65 73 73 65 64 | can be accessed| 00000200 20 62 79 20 63 6c 69 63 6b 69 6e 67 20 6f 6e 20 | by clicking on | 00000210 74 68 65 20 6c 69 74 74 6c 65 20 52 41 4d 0a 63 |the little RAM.c| 00000220 68 69 70 20 69 63 6f 6e 20 69 6e 20 74 68 65 20 |hip icon in the | 00000230 62 6f 74 74 6f 6d 2d 6c 65 66 74 20 6f 66 20 74 |bottom-left of t| 00000240 68 65 20 66 6f 72 6d 61 74 20 6f 70 74 69 6f 6e |he format option| 00000250 73 20 77 69 6e 64 6f 77 2e 20 41 67 61 69 6e 2c |s window. Again,| 00000260 20 61 74 20 74 68 65 20 74 6f 70 0a 69 73 20 74 | at the top.is t| 00000270 68 65 20 66 69 6c 65 20 74 79 70 65 20 28 69 66 |he file type (if| 00000280 20 72 65 63 6f 67 6e 69 73 65 64 29 2c 20 65 67 | recognised), eg| 00000290 2e 20 27 44 65 73 6b 74 6f 70 20 54 72 61 63 6b |. 'Desktop Track| 000002a0 65 72 27 2e 0a 0a 20 20 54 68 65 20 6d 61 69 6e |er'... The main| 000002b0 20 69 63 6f 6e 20 69 6e 64 69 63 61 74 65 73 20 | icon indicates | 000002c0 68 6f 77 20 6d 75 63 68 20 6d 65 6d 6f 72 79 20 |how much memory | 000002d0 69 73 20 75 73 65 64 20 2a 70 65 72 20 62 75 66 |is used *per buf| 000002e0 66 65 72 2a 2e 20 41 73 20 74 68 65 72 65 20 61 |fer*. As there a| 000002f0 72 65 0a 74 77 6f 20 62 75 66 66 65 72 73 2c 20 |re.two buffers, | 00000300 74 68 65 20 72 65 71 75 69 72 65 64 20 6d 65 6d |the required mem| 00000310 6f 72 79 20 69 73 20 74 77 69 63 65 20 74 68 61 |ory is twice tha| 00000320 74 20 73 68 6f 77 6e 2e 20 48 6f 77 65 76 65 72 |t shown. However| 00000330 2c 20 74 68 65 20 73 6c 6f 74 20 73 69 7a 65 0a |, the slot size.| 00000340 74 61 6b 65 6e 20 6d 61 79 20 62 65 20 73 6c 69 |taken may be sli| 00000350 67 68 74 6c 79 20 6d 6f 72 65 2c 20 64 75 65 20 |ghtly more, due | 00000360 74 6f 20 61 20 66 65 77 20 62 79 74 65 73 20 6f |to a few bytes o| 00000370 66 20 68 65 61 64 65 72 20 69 6e 66 6f 72 6d 61 |f header informa| 00000380 74 69 6f 6e 2e 20 54 6f 0a 63 6f 6d 62 61 74 20 |tion. To.combat | 00000390 74 68 69 73 2c 20 73 65 74 20 74 68 65 20 62 75 |this, set the bu| 000003a0 66 66 65 72 20 74 6f 20 73 6f 6d 65 74 68 69 6e |ffer to somethin| 000003b0 67 20 6c 69 6b 65 20 33 31 4b 62 20 6f 72 20 36 |g like 31Kb or 6| 000003c0 33 4b 62 20 69 6e 73 74 65 61 64 20 6f 66 20 33 |3Kb instead of 3| 000003d0 32 4b 62 20 6f 72 0a 36 34 4b 62 2e 0a 0a 20 20 |2Kb or.64Kb... | 000003e0 54 68 65 20 66 69 72 73 74 20 74 77 6f 20 70 72 |The first two pr| 000003f0 65 73 65 74 20 69 63 6f 6e 73 20 73 65 74 20 74 |eset icons set t| 00000400 68 65 20 73 69 7a 65 20 6f 66 20 6f 6e 65 20 62 |he size of one b| 00000410 75 66 66 65 72 20 74 6f 20 6f 6e 65 20 73 65 63 |uffer to one sec| 00000420 6f 6e 64 91 73 20 61 6e 64 0a 74 77 6f 20 73 65 |ond.s and.two se| 00000430 63 6f 6e 64 73 91 20 61 75 64 69 6f 20 72 65 73 |conds. audio res| 00000440 70 65 63 74 69 76 65 6c 79 2c 20 61 63 63 6f 72 |pectively, accor| 00000450 64 69 6e 67 20 74 6f 20 74 68 65 20 63 75 72 72 |ding to the curr| 00000460 65 6e 74 20 66 72 65 71 75 65 6e 63 79 20 73 65 |ent frequency se| 00000470 74 74 69 6e 67 2e 0a 54 68 69 73 20 6d 65 61 6e |tting..This mean| 00000480 73 20 74 68 61 74 20 74 68 65 72 65 20 77 69 6c |s that there wil| 00000490 6c 20 62 65 20 61 20 6f 6e 65 20 6f 72 20 74 77 |l be a one or tw| 000004a0 6f 20 73 65 63 6f 6e 64 73 20 70 61 75 73 65 20 |o seconds pause | 000004b0 72 65 73 70 65 63 74 69 76 65 6c 79 2c 0a 62 65 |respectively,.be| 000004c0 74 77 65 65 6e 20 6c 6f 61 64 69 6e 67 20 74 68 |tween loading th| 000004d0 65 20 6e 65 78 74 20 70 61 72 74 20 6f 66 20 74 |e next part of t| 000004e0 68 65 20 73 61 6d 70 6c 65 20 74 6f 20 70 6c 61 |he sample to pla| 000004f0 79 2e 20 54 68 65 20 6c 61 73 74 20 74 77 6f 20 |y. The last two | 00000500 70 72 65 73 65 74 73 0a 74 65 73 74 20 74 68 65 |presets.test the| 00000510 20 73 70 65 65 64 20 6f 66 20 74 68 65 20 6d 65 | speed of the me| 00000520 64 69 61 2c 20 61 6e 64 20 73 65 74 20 74 68 65 |dia, and set the| 00000530 20 73 69 7a 65 20 6f 66 20 6f 6e 65 20 62 75 66 | size of one buf| 00000540 66 65 72 20 73 6f 20 74 68 61 74 20 74 68 65 20 |fer so that the | 00000550 74 69 6d 65 0a 73 70 65 6e 74 20 6c 6f 61 64 69 |time.spent loadi| 00000560 6e 67 20 69 73 20 31 30 63 73 20 28 30 2e 31 30 |ng is 10cs (0.10| 00000570 73 65 63 73 29 20 6f 72 20 35 30 63 73 20 28 30 |secs) or 50cs (0| 00000580 2e 35 30 73 65 63 73 29 20 72 65 73 70 65 63 74 |.50secs) respect| 00000590 69 76 65 6c 79 2e 20 28 4e 42 2e 20 4f 6e 0a 73 |ively. (NB. On.s| 000005a0 6c 6f 77 20 64 65 76 69 63 65 73 2c 20 73 75 63 |low devices, suc| 000005b0 68 20 61 73 20 66 6c 6f 70 70 69 65 73 2c 20 74 |h as floppies, t| 000005c0 68 65 20 74 65 73 74 20 6d 61 79 20 74 61 6b 65 |he test may take| 000005d0 20 61 20 66 65 77 20 73 65 63 6f 6e 64 73 2e 29 | a few seconds.)| 000005e0 0a 0a 20 20 43 6c 69 63 6b 69 6e 67 20 6f 6e 20 |.. Clicking on | 000005f0 74 68 65 20 74 79 70 65 20 6d 65 6e 75 20 69 63 |the type menu ic| 00000600 6f 6e 20 62 72 69 6e 67 73 20 75 70 20 61 20 6c |on brings up a l| 00000610 69 73 74 20 6f 66 20 72 65 63 6f 67 6e 69 73 65 |ist of recognise| 00000620 64 20 66 6f 72 6d 61 74 73 2e 0a 53 65 6c 65 63 |d formats..Selec| 00000630 74 69 6e 67 20 6f 6e 65 20 6f 66 20 74 68 65 73 |ting one of thes| 00000640 65 20 77 69 6c 6c 20 6d 61 6b 65 20 57 61 76 65 |e will make Wave| 00000650 20 50 6c 61 79 65 72 20 61 74 74 65 6d 70 74 20 | Player attempt | 00000660 74 6f 20 72 65 61 64 20 74 68 65 20 73 61 6d 70 |to read the samp| 00000670 6c 65 20 69 6e 0a 74 68 61 74 20 66 6f 72 6d 61 |le in.that forma| 00000680 74 2e 20 54 68 69 73 20 69 73 20 75 73 65 66 75 |t. This is usefu| 00000690 6c 20 69 66 20 74 68 65 20 73 61 6d 70 6c 65 20 |l if the sample | 000006a0 68 61 73 20 74 68 65 20 77 72 6f 6e 67 20 66 69 |has the wrong fi| 000006b0 6c 65 74 79 70 65 2e 0a |letype..| 000006b8
.