Rus Articles Journal

As talks DOS? Part 2

In the first part of article we considered two popular packages allowing blind users to work in the DOS operating system. Now we will consider one more which is called Speaker commander . It is written by Kartavtsev Sergey, the blind PC user from Zaporizhia.

Here that the author of the program writes to its documentation: In recent years among blind experts and students, and also at specialized schools of our country personal computers with the speech interface were widely adopted that allowed to solve considerably an immemorial problem of information deficiency of people with visual impairments. The main achievement in this area is an opportunity to work with text files which was received by blind users of PEVM (further With - users) thanks to text editors with the speech interface.

In particular, now, two such developments are widespread in Ukraine: Minsk Search Echo and the Kiev RED1 which speech conclusion is provided with a speech synthesizer Fonemafon Lobanova. Each of them has more or less developed interface cover of the MS DOS file system, but the blind user, obviously insufficient for full work. It also induced me to create a speech automated workplace which would satisfy, first of all to my own inquiries.

Speaker commander uses the principles of the speech interface developed at Institute of Cybernetics of Academy of Sciences of Ukraine but also contains many original ideas which still should pass

approbation. In structure of the " system; Speaker commander No. 1 the speech editor of texts RED02 enters. EXE created on the basis of the RED1 editor. EXE, in turn, created by efforts of staff of Institute of Cybernetics of Academy of Sciences of Ukraine.

Speaker commander allows :

1. To look through contents of catalogs.

2. Easily and quickly to move on difficult multilevel tables of contents of file system.

3. To read and edit text files.

4. To cause the executed files.

5. To copy, move, delete and archive files and subdirectories.

Speaker commander provides operational information about parameters of file system and about system resources. Provides the friendly dialogue calculated, first of all, on users with total absence of visual perception which also the author treats.

First " version; Speaker commander is an academic year project. It was written by the author during training at the fourth year of the Zaporizhia state university. Speaker commander not lower than 286 AT work at computers of IBM. The computer has to have surely the internal loudspeaker as many nonverbal sound signals are brought to it. And, generally, it is enough existence of the internal loudspeaker for the organization of a speech conclusion, but it is better to use Covox or SoundBlaster devices for this purpose.

If on the computer ESS - the similar sound card, then " is established; Speaker commander will be able to lose WAV - and MOD - files. Speaker commander it is intended for work in MS DOS and passed tests in the DOS 6 version. 22. Therefore the author recommends to users to use this version, it is desirable with the Russian coding as the Russian names of files and subdirectories much more pleasant are perceived aurally, than the perverted English in SDRV - ache transcriptions.

Speaker commander does not remain the resident for the period of implementation of other programs not to occupy random access memory. Therefore every time after execution of the command of DOS it should be loaded anew from a disk.

The basic output device for the first " version; Speaker commander the speech synthesizer " is ; FONEMAFON Lobanov who is realized by the Minsk laboratory of synthesis of the speech in the form of the resident driver. Directly for reproduction of a sound it is possible to use one of three sources: internal loudspeaker of the computer, SoundBlaster device or digital analog converter (Covox).

Best of all the SDRVC driver with a conclusion to Covox proved to be in work . Any radio fan can easily mount the TsAP device (Covox) (and among those blind persons much), his accessories are much cheaper than the sound card, quality of the speech is incomparable better, than at the internal loudspeaker, and well made Covox does not concede to the sound card on quality of a conclusion of the speech.

Speaker commander uses three utilities of DOS for work with files and subdirectories: deltree. exe, move. exe and xcopy. exe. It will also work in full emulation of DOS WINDOWS - 95 but it is necessary to check attentively existence of above-mentioned utilities, they often are absent.

" interface; Speaker commander fully supports RAR and ARJ archivers, the others: LHA, LHICE, PKZIP/PKUNZIP, PKPAK/PKUNPAK are used, generally for a razarkhivation of their archives though the possibility of archiving is not excluded, but it is necessary to approach it with care. For many operations with the " files; Speaker commander uses the macrobat system of L. Bunich.

In end of the review of some programs allowing blind users to work more or less fully at the personal computer equipped with the DOS operating system there is a wish to note that in the former Soviet Union, unlike countries of Western Europe and America, both in the nineties, and today the majority of programs for blind persons is written by blind persons.

On the one hand, it is plus because authors of such programs are perfectly informed on specifics of use by blind persons of the computer, on their requirements, tasks. On the other hand, it is minus because, despite all those programs which allow the blind user to work at the personal computer and to be engaged in programming, its opportunities nevertheless concede to opportunities of able to see users, programmers.

In our countries, unfortunately, problems of disabled people first of all interest disabled people, and they are compelled independently, by own efforts to try to solve them. Also it is necessary only to hope for any changes in this aspect at least in the future.