Recently, I was faced with the problem of choosing a voice synthesizer of speech. The main requirements are support for the Russian language and more or less normal pronunciation.
For those who are not aware of what a speech synthesizer is, I will tell you - this is a special program, the meaning of which is to convert a written text into oral speech... This is the so-called synthesis.
Why is this necessary? Well, for example, when you need to record a voice message in someone else's voice. For foreigners, it can be useful in order to hear the pronunciation of a particular word. The speech synthesizer is convenient for reading when you need to turn on a fairy tale for a child that is not in audiobooks. Anyway, there are all sorts of situations.
So, in the process of choosing, I found several very useful tools, among which they work online with the support of the Russian language, and now I will tell you about them.

Google translate

Here is a truly multipurpose product that can be used in very different ways. Main advantages:
Is a completely free service;
- work online without installation. All you need is Internet access;
- in my opinion this speech synthesizer has the best voice module, the closest to natural;
- probably the best development team and technical support in the world;
- the most a large number of supported languages.
Unfortunately, there is only one voice option - female. I couldn't find a choice.

RHVoice

An excellent multilingual speech synthesizer from the Russian developer Olga Yakovleva. There are versions for both Windows and Linux operating systems. The synthesizer is designed by Olga Yakovleva. The program is distributed completely free of charge and is available on the official website in two versions: as a SAPI5-compatible standalone version and as a module for free software screen access NVDA. This voice synthesizer can voice Russian texts in three voices - Elena, Irina and Alexander.

Acapela

Acapela is perhaps one of the most popular and widespread voice synthesizers in the world. The main feature is the voice acting of texts in more than thirty languages ​​of the world. If we consider the Russian language, then there are two voices available - Nikolai and Alena. Moreover, the latter is more perfect and natural in terms of pronunciation. In demo mode, only Alena's voice is available on the site.
The program is available for download on the official website and supports all popular modern operating systems - Windows, Linux, Mac. There are even versions for Android and iOS.

Vokalizer

Milena's female voice is another very popular voice synthesizer engine from Nuance - very high quality and natural sounding. You can hear it in call centers and in various network speech systems, as well as in various applications such as Moon + Reader Pro, Full Screen Caller ID, Cool Reader, in TomTom navigation programs, iGo Primo.
Among the advantages are the ability to install various dictionaries, adjust the volume, stress and reading speed.
The program code is open, you can download it for free on the official website, in fact, like the installer of the program itself.

Festival

Festival is not just another voice speech synthesizer, but already a whole system of speech recognition and synthesis with various APIs. Developed by the Speech Technology Research Center of the University of Edinburgh.
Festival is designed to support multiple languages. Supports English, Welsh and Spanish by default. But it is possible to connect voice packs of other languages: Czech, Finnish, Hindi, Italian, Marathi, Polish, Russian and Telugu.
The program code is open, the voice synthesizer itself is distributed under the open source license and is available only for Linux operating systems. True, there is a ported version of Macintosh.

ESpeak

The last speech synthesis system in my review - the ESpeak program - has been in development for about 8 years. Latest version- 1.48.04 from April 6, 2014. This voice synthesizer is cross-platform - there are versions for Windows, Linux, Mac OS X, and even under RISC OS, although the latter two are no longer supported.
Separately, I note that eSpeak is used in Android mobile operating systems, although it has a number of significant errors.
The program supports fifty different languages, the support of which is indicated during the installation of the program.
One of the main disadvantages of this voice synthesizer is the generation of voice only in a WAV file. You can download the program for free on the official website.

On my own behalf, I will only add that I liked RHVoice and Vokalizer, although this is a lot of an individual matter and largely depends on what you want to get. So try, play and watch. I think that one of the options presented should definitely suit you.

K: Wikipedia: Articles without images (type: unspecified) K: Software developed in 2006

eSpeak is a compact free software speech synthesizer that supports Speech Synthesis Markup Language (SSML).

Operating Systems

ESpeak versions exist for such operating systems as Microsoft Windows, Mac OS X, Linux, RISC OS, and its source code is also available in C ++. In addition, the synthesizer's official documentation provides instructions on how to compile it for Windows Mobile. The program has one significant limitation - voice generation is only possible in a WAV file.

In addition, eSpeak is used in mobile operating systems Android, starting from version 1.6, and Maemo, but these projects are not personally supervised by the developer, and there are no corresponding packages on the official eSpeak website, and the Android version has a number of significant errors when working in some languages. , in particular, and Russian.

Supported languages

eSpeak supports about five dozen different languages. During installation, the user needs to indicate which dialects support he is interested in.

Below is a list of languages ​​supported by the eSpeak synthesizer and their designations that are used in its settings.

• Albanian - sq
• English (American) - en-us
• English (British with a northern accent) - en-n
• English (British with a West Midland accent) - en-wm
• English (Classic British) - en
• English (common spoken) - en-rp
• English (Scottish) - en-sc
• Armenian (Western) - hy-west
• Armenian (classical) - hy
• Afrikaans - af
• Bosnian - bs
• Welsh - cy
• Hungarian - hu
• Vietnamese - vi
• Dutch - nl
• Voices MBROLA (voice xxx) - mb-xxx
• Greek - el
• Ancient Greek - grc
• Indonesian - id
• Icelandic - is
• Spanish (classic) - es
• Spanish (Latin American) - es-la
• Italian - it
• Catalan - ca
• Chinese (Cantonese) - zh-yue
• Chinese (Mandarin) - zh
• Kurdish - ku
• Latin - la
• Latvian - lv
• Lojban - jbo
• Macedonian - mk
• German - de
• Norwegian - no
• Polish - pl
• Portuguese (Brazilian) - pt
• Portuguese (European) - pt-pt
• Romanian - ro
• Russian - ru
• Serbian - sr
• Slovak - sk
• Slovenian - sw
• Tamil - ta
• Turkish - tr
• Finnish - fi
• French - fr
• Hindi - hi
• Croatian - hr
• Czech (colloquial) - cs
• Swedish - sv
• Esperanto - eo

The list of supported languages ​​can also be expanded by using the MBROLA voice libraries, which can be connected to eSpeak.

eSpeak and MBROLA

MBROLA is a special diphone speech synthesis algorithm, on the basis of which many different software products have been created with the inclusion of text-to-speech technology (TTS). This project holds the record among other speech synthesis technologies in terms of the number of different languages ​​for which it was used. Although for some common languages ​​MBROLA voices have not yet been created, including for Russian.

eSpeak can work in conjunction with MBROLA, which makes it possible to use the voice libraries of this project as an integral part of the eSpeak itself. This allows you to further expand the list of supported languages ​​for text-to-speech.

You can use a bunch of eSpeak and MBROLA on such operating systems as Windows, Linux and Mac OS X.

However, not all MBROLA voice libraries support integration with eSpeak.

Implementation principles

The words of the input text for synthesizing go through two stages of processing:

• a word in literal representation is converted into a sequence of phonemes;
• an audio signal is generated based on the received sequence.

The rules for obtaining a sequence of phonemes are stored as "A, B, C = D". Where B is the letter in question, A and C are the context of the surrounding of that letter in the word, and D is the phoneme into which this letter can be transformed. The context of the environment can be specified by both specific letters and special characters denoting groups of letters. Synthesizer rules allow for ambiguous definition of such strings. To resolve this ambiguity, the synthesizer assigns a priority to each rule, which is calculated based on the number of letters used in the rule and the degree of specificity in determining the environmental context. The rules can also indicate differences in translation depending on the stress.

In eSpeak, vowel sounds are always synthesized, voiced consonants are obtained by mixing synthesized sounds with pre-recorded voice noises, and all other sounds are simply recorded, for example, [w].

Every sound, except for voiceless consonants, is represented by a sequence of formants. In addition to information about formants, each phoneme has information about its amplitude, sound duration and delay before the next phoneme. Based on these parameters, the sound of a vowel is synthesized using algorithms implemented in the synthesizer. Information about phonemes and formants is stored in separate files, which are also subsequently compiled into a binary format.

The synthesizer comes with the eSpeak Edit utility. This is a GUI application written using the WXLib library. It allows you to visually edit ready-made phonemes. The phoneme is represented as a graph of a curve, where you can sequentially select formants and change their values, such as frequency, height and width. Thanks to these possibilities, on the basis of ready-made phonemes, you can get new, more correct sounds for a certain language. At the same time, some of the phonemes cannot be obtained by modifying existing ones. For example, during the development of the Russian-language part of eSpeak, the sound [р] was specially recorded, since there was no worthy analogue for it in other languages.

ESpeak projects

Third party add-ons

Some languages ​​do not have simple and universal rules for constructing competent speech and eSpeak requires additional components to produce high-quality synthesis in these languages. In order to avoid increasing the size of the main eSpeak package, these components are distributed separately. In particular, in Russian there is no general rules setting the stressed syllable in words. In these cases, eSpeak tries to determine the stress of the word, but this pronunciation often does not match the correct one. To solve this problem, there is a special extended pronunciation dictionary, which must be installed separately from the main eSpeak package.

In addition to Russian, third-party eSpeak speech correction components are also available for Chinese (Mandarin and Cantonese).

You can download these dictionaries from the official website of the project.

see also

Write a review on "ESpeak"

Notes (edit)

Links

• on the .

Proprietary software Free software Car Applications Protocols Developers / Researchers Process

Excerpt from ESpeak

The comrades soldiers who were walking next to Pierre did not look back, just like him, at the place from which they heard the shot and then the howl of the dog; but a stern expression lay on all faces.

The depot, and the prisoners, and the marshal's wagon train stopped in the village of Shamsheve. Everything huddled together around the fires. Pierre went up to the fire, ate roasted horse meat, lay down with his back to the fire, and immediately fell asleep. He slept again the same dream as he slept in Mozhaisk after Borodin.
Again the events of reality were combined with dreams, and again someone, whether he or someone else, told him thoughts, and even the same thoughts that were told to him in Mozhaisk.
“Life is everything. Life is God. Everything moves and moves, and this movement is God. And as long as there is life, there is the enjoyment of the self-consciousness of the deity. Love life, love God. The hardest and most blessed of all is to love this life in your sufferings, in the innocence of suffering. "
"Karataev" - Pierre remembered.
And suddenly Pierre introduced himself as a living, long forgotten, meek old teacher who taught Geography to Pierre in Switzerland. "Wait," said the old man. And he showed Pierre the globe. This globe was a living, vibrating ball without dimensions. The entire surface of the sphere consisted of drops tightly compressed together. And these drops all moved, moved and then merged from several into one, then from one they were divided into many. Each drop tried to spill out, to capture the largest space, but others, striving for the same, squeezed it, sometimes destroyed it, sometimes merged with it.
“This is life,” said the old teacher.
“How simple and clear it is,” thought Pierre. "How could I not have known this before."
“There is a god in the middle, and each drop seeks to expand in order to reflect it in its greatest size. And it grows, merges, and shrinks, and is destroyed on the surface, goes into the depths and resurfaces. Here it is, Karataev, here it spilled over and disappeared. - Vous avez comprised, mon enfant, [You see.] - said the teacher.
- Vous avez comprised, sacre nom, [You understand, damn you.] - a voice shouted, and Pierre woke up.
He got up and sat down. By the fire, squatting on his haunches, sat a Frenchman who had just pushed aside a Russian soldier, and grilled meat worn on a ramrod. Wiry, rolled up, overgrown with hair, red hands with short fingers deftly turned the ramrod. A dark brown face with furrowed brows was clearly visible in the light of the coals.
“Ca lui est bien egal,” he grumbled, quickly addressing the soldier behind him. -… brigand. Va! [He doesn't care ... the robber, really!]
And the soldier, twirling the ramrod, looked gloomily at Pierre. Pierre turned away, peering into the shadows. One Russian prisoner soldier, the one who had been pushed aside by a Frenchman, was sitting by the fire and patting something with his hand. Looking closer, Pierre recognized the purple dog, which, wagging its tail, was sitting beside the soldier.
- Did you come? - said Pierre. - Ah, Pla ... - he began and did not finish. In his imagination, suddenly, at the same time, connecting with each other, a memory arose of the look with which Plato looked at him, sitting under a tree, about a shot heard in that place, about howling dogs, about the criminal faces of two Frenchmen who ran past him, about the shot smoking gun, about the absence of Karataev at this halt, and he was already ready to understand that Karataev was killed, but at the same moment in his soul, coming from God knows where, there was a memory of an evening he spent with a beautiful Polish woman, in the summer, on balcony of his Kiev house. And yet, not linking the memories of the present day and not drawing a conclusion about them, Pierre closed his eyes, and the picture of summer nature mixed with the memory of swimming, of a liquid oscillating ball, and he sank somewhere into the water, so that the water converged over his head.
Before sunrise, he was awakened by loud, frequent shots and shouts. The French ran past Pierre.
- Les cosaques! [Cossacks!] - one of them shouted, and a minute later a crowd of Russian faces surrounded Pierre.
For a long time Pierre could not understand what happened to him. On all sides he heard the cries of joy from his comrades.
- Brothers! My darlings, darlings! - crying, shouted the old soldiers, embracing the Cossacks and the hussars. Hussars and Cossacks surrounded the prisoners and hastily offered some dresses, some boots, some bread. Pierre sobbed, sitting among them, and could not utter a word; he embraced the first soldier who approached him and, crying, kissed him.
Dolokhov stood at the gates of the collapsed house, letting a crowd of disarmed Frenchmen pass by. The French, agitated by everything that had happened, spoke loudly among themselves; but when they passed Dolokhov, who lightly whipped himself on his boots with a whip and looked at them with his cold, glassy, ​​promising gaze, their talk fell silent. On the other side stood the Cossack Dolokhov and counted the prisoners, marking hundreds of chalk lines on the gates.
- How many? Dolokhov asked the Cossack, who was counting the prisoners.
- For the second hundred, - answered the Cossack.
- Filez, filez, [Come in, come in.] - said Dolokhov, having learned this expression from the French, and, meeting his eyes with the passing prisoners, his gaze flashed with a cruel brilliance.
Denisov, with a gloomy face, took off his cap, walked behind the Cossacks, who were carrying the body of Petya Rostov to a hole dug in the garden.

From October 28, when the frosts began, the flight of the French acquired only a more tragic character of people freezing and roasting to death by the fires and continuing to ride in fur coats and carriages with the looted goods of the emperor, kings and dukes; but in essence, the process of flight and disintegration of the French army has not changed at all since the departure from Moscow.
From Moscow to Vyazma, out of the seventy-three thousandth French army, not counting the guards (which throughout the war did nothing but plunder), out of seventy-three thousand, thirty-six thousand remained (of this number, no more than five thousand dropped out in battles). Here is the first term of the progression, which mathematically correctly determines the next.
The French army in the same proportion melted and was destroyed from Moscow to Vyazma, from Vyazma to Smolensk, from Smolensk to Berezina, from Berezina to Vilna, regardless of the greater or lesser degree of cold, pursuit, obstruction of the path and all other conditions taken separately. After Vyazma, the French troops, instead of three columns, huddled together in one heap and so they went to the end. Berthier wrote to his sovereign (it is known how far from the truth the chiefs allow themselves to describe the position of the army). He wrote:
"Je crois devoir faire connaitre a Votre Majeste l" etat de ses troupes dans les differents corps d "annee que j" ai ete a meme d "observer depuis deux ou trois jours dans differents passages. Elles sont presque debandees. Le nombre des soldats qui suivent les drapeaux est en proportion du quart au plus dans presque tous les regiments, les autres marchent isolement dans differentes directions et pour leur compte, dans l "esperance de trouver des subsistances et pour se debarrasser de la discipline. En general ils regardent Smolensk comme le point ou ils doivent se refaire. Ces derniers jours on a remarque que beaucoup de soldats jettent leurs cartouches et leurs armes. Dans cet etat de choses, l "interet du service de Votre Majeste exige, quelles que soient ses vues ulterieures qu "on rallie l" armee a Smolensk en commencant a la debarrasser des non combattans, tels que hommes demontes et des bagages inutiles et du materiel de l "artillerie qui n" est plus en proportion avec les forces actuelles. En outre les jours de repos, des subsistances sont necessaires aux soldats qui sont extenues par la faim et la fatigue; beaucoup sont morts ces derniers jours sur la route et dans les bivacs. Cet etat de choses va toujours en augmentant et donne lieu de craindre que si l "on n" y prete un prompt remede, on ne soit plus maitre des troupes dans un combat. Le 9 November, a 30 verstes de Smolensk. "
[I am on duty to inform your Majesty about the condition of the hulls I have examined on the march in the last three days. They are almost in complete disarray. Only a fourth of the soldiers remain with the banners, the rest go on their own in different directions, trying to find food and get rid of the service. Everyone thinks only of Smolensk, where they hope to rest. IN last days many soldiers abandoned their cartridges and guns. Whatever your further intentions, but the usefulness of your Majesty's service requires assembling corps in Smolensk and separating from them dismounted cavalrymen, unarmed, superfluous carts and part of the artillery, for it is no longer in proportion to the number of troops. You need food and a few days of rest; the soldiers are exhausted by hunger and fatigue; in recent days, many have died on the road and in bivouacs. This plight is continually intensifying and raises the fear that, unless swift action is taken to prevent evil, we will soon have no troops in our power in the event of a battle. November 9, 30 versts from Smolenok.]
Bursting into Smolensk, which seemed to them the promised land, the French killed each other for food, robbed their own shops and, when everything was plundered, ran on.

VoiceFabric is an Internet service that allows you to sound any text information with a synthesized voice.
A demo synthesis with different voices is available on the voicefabric.ru website, with its help you can evaluate the quality of the synthesis. To date, 8 voices are available (female and male), which can speak 3 languages ​​(Russian, English, Kazakh).

Synthesis of speech from RTC is useful when you need to personalize outgoing voice messages. The solution allows you to completely abandon the services of the announcer and pre-recording of sound clips in the IVR-menu, that is, the written text is instantly converted into sound recording and voiced to the client into the telephone line.

Also, using synthesized voices, you can sound books, videos, record voice cards without losing the "natural" intonation. Voicefabric guarantees the correct placement of stress, correct reading abbreviations, numbers, abbreviations.

You can register on the website voicefabric.ru and get free seconds of synthesis, as well as access to the service programming interface.

Today speech synthesizers used in stationary computer systems or mobile devices do not seem to be something unusual anymore. Technology has stepped forward and made it possible to reproduce the human voice. How it all works, where it is applied, what is the best speech synthesizer and what potential problems the user may face, see below.

What are speech synthesizers and where are they used?

Speech synthesizers are special programs consisting of several modules that allow you to translate text typed on the keyboard into ordinary human speech in the form of sound.

It would be naive to believe that companion libraries contain absolutely all words or possible phrases recorded in studios. real people... It's just physically impossible. In addition, the phrase libraries would be of such a size that it would simply not be possible to install them even on modern large hard drives, not to mention mobile devices.

For this, a technology was developed, called Text-to-Speech (text-to-speech translation).

The most widespread speech synthesizers are in several areas, which include independent study foreign languages ​​(programs often have support in 50 languages ​​or more), you need to hear the code correct pronunciation words, listening to the texts of books instead of reading, creating speech and vocal parts in music, using them by people with disabilities, issuing search queries in the form of voiced words and phrases, etc.

Varieties of programs

Depending on the area of ​​application, all programs can be divided into two main types: standard, directly converting text to speech, and speech or vocal modules used in music applications.

For a more complete understanding of the picture, we will consider both classes, but more emphasis will still be placed on speech synthesizers in their immediate purpose.

Pros and cons of basic speech applications

As for the advantages and disadvantages of programs of this type, let's first consider all the same disadvantages.

First of all, you need to clearly understand that a computer is a computer, which at this stage of development can synthesize human speech very approximately. In the simplest programs, there are often problems with stating words in words, reduced sound quality, and in mobile devices - increased power consumption, and sometimes unauthorized loading of speech modules.

But there are also enough advantages, because many people perceive sound information much better than visual information. Ease of perception is evident.

How to use speech synthesizer?

Now a few words about the basic principles of using this type of software. You can install any type of speech synthesizer without any problems. IN stationary systems a standard installer is used, where the main task will be to select the supported language modules. For mobile devices, the installation file can be downloaded from an official store or repository like Google Play or AppStore, after which the application is automatically installed.

As a rule, when you first start it, you do not need to make any settings other than setting the default language. True, sometimes the program can offer you to choose the sound quality (in the standard version, which is used everywhere, the sampling rate is 4410 Hz, the depth is 16 bits and the bit rate is 128 kbps). In mobile devices, these figures are lower. Nevertheless, a certain voice is taken as a basis. With a standard pronunciation pattern, filters and equalizers are applied to achieve this exact tone.

In use, you can select several options for manual translation, dubbing of already existing text from a file, integration into other applications (for example, web browsers) with activation of search results or reading text content on online pages. It is enough to select the desired option of action, the language and the voice with which all this will be pronounced. Many programs have several types of voices: both male and female. The start button is usually used to activate the playback process.

If we talk about how to turn off the synthesizer, there may be several options. In the simplest case, the playback stop button is used in the program itself. In the case of integration into the browser, deactivation is performed in the extensions settings or the complete removal of the plug-in. But with mobile devices, despite the direct disconnection, there may be problems, which will be discussed separately.

In music programs, setting and entering text is much more difficult. For example, the FL Studio application has its own speech module, in which you can select to slightly change the key settings, playback speed, etc. To put stress in front of the syllable, use the symbol "_". But even such a synthesizer is only suitable for creating robotic voices.

But the Vocaloid package from Yamaha belongs to the professional type programs. The Text-to-Speech technology is implemented here to the fullest extent. In the settings, in addition to the standard parameters, you can set articulation, glissando, use libraries with vocals of professional performers, compose words and phrases, adjusting them to the notes, and a lot more. It is not surprising that a package with only one vocal takes about 4 GB or more in the installation distribution, and after unpacking it takes twice or three times more.

Speech synthesizers with Russian voices: a brief overview of the most popular

But let's return to the simplest applications and consider the most popular ones.

RHVoice - according to most experts, the best speech synthesizer, which is a Russian development of authorship Three voices are available in the standard version (Alexander, Irina, Elena). The settings are simple. And the application itself can be used both as an independent program, compatible with SAPI5, and as a display module.

Acapela is quite an interesting application, main feature which is almost perfect voice-over of the text in more than 30 languages ​​of the world. In the regular version, however, only one voice is available (Alena).

Vocalizer is a powerful app with female voice Milena. This program is very often used in call centers. There are many settings for stress setting, volume, reading speed and installation of additional dictionaries. The main difference is that the speech engine can be embedded in programs like Cool Reader, Moon + Reader Pro or Full Screen Caller ID.

Festival is a powerful speech synthesis and recognition utility designed for Linux and Mac OS X. The application is open source and, in addition to standard language packs, even supports Finnish and Hindi.

eSpeak is a speech application supporting over 50 languages. The main disadvantage is the saving of files with synthesized speech exclusively in the WAV format, which takes up a lot of space. But the program is cross-platform and can be used even in mobile systems.

Text-to-speech problems on Google Android

When installing a "native" speech synthesizer from Google, users constantly complain that it spontaneously turns on the loading of additional language modules, which can not only take a fairly long period of time, but also consume traffic.

Getting rid of this on Android systems is very simple. To do this, use the settings menu, then go to the language and voice input section, select voice search and on the offline speech recognition parameter, click on the cross (disable). Additionally, it is recommended to clear the application cache and restart the device. Sometimes you may need to turn off the display of notifications in the application itself.

What is the bottom line?

Summing up, we can say that in most cases, ordinary users will suit the most simple programs... RHVoice is in the lead in all ratings. But for musicians who want to achieve a natural sounding voice so that the difference between live vocals and computer synthesis is not felt by ear, it is better to give preference to programs like Vocaloid, especially since many additional voice libraries are released for them, and the settings have so many possibilities that primitive applications, as they say, and did not stand nearby.

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Speech synthesizer Captain

"Captain Speech Synthesizer" is an MS SAPI4 compatible synthesizer. It supports speech synthesis in Russian and Ukrainian. Support for the Ukrainian language is based on the substitution of Ukrainian phonemes with similar-sounding Russian phonemes.

The synthesizer is based on one of the ten voices of the "Speaking Mouse Home" TTS software complex, which was developed by the Voice Technologies Club at the Moscow State University Science Park in 1995. This synthesizer inherited the name of its prototype from "Speaking Mouse Home" - Captain.

Besides Russian and Ukrainian languages The captain is able to work with English, German and French, as well as to perform separate reading of multilingual texts: each language with a corresponding synthesizer voice. Separate reading of multilingual documents and support for English, German and French languages is carried out through the use of an additional module based on the eSpeak synthesizer, however, the use of this module for the Captain's work is not necessary. Support for the Russian and Ukrainian languages ​​can be carried out without installing it. This module for expanding Captain's capabilities is already included in the archive, which you can download from our website, so its separate download, as described in the accompanying documentation of the synthesizer itself, is not required.

The synthesizer has a male voice with good speech intelligibility, but low natural sounding. The advantages include high speed, small size and low load on system capacities. However, "Captain" also has a number of disadvantages:

• The synthesizer practically does not support the function of adjusting the speech height.
• In the course of work, the phenomenon of "swallowing" sounds can sometimes occur.
• From time to time, the synthesizer may become silent in the process of work or start reading only the first part of the lines of text. In this case, it is recommended to overload the synthesizer to return to normal operation.

This synthesizer may require a system component to operate.