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Tackling the Challenges in Vietnamese Speech Recognition

From:Datatang Date:2023-04-30

Speech recognition technology has made remarkable strides in recent years, enabling computers and other devices to understand and respond to spoken language. However, speech recognition technology is still facing challenges when it comes to recognizing Vietnamese speech. The Vietnamese language is tonal, which means that the meaning of a word can vary depending on the tone used. This presents a unique challenge for speech recognition technology, which must be able to accurately identify and differentiate between the different tones in Vietnamese speech.

One of the biggest challenges of Vietnamese speech recognition technology is the lack of high-quality speech data. In order to develop effective speech recognition systems, developers need access to large amounts of high-quality speech data. Unfortunately, there is a limited amount of such data available for Vietnamese. This makes it difficult to train speech recognition systems to accurately recognize Vietnamese speech.

Another challenge of Vietnamese speech recognition technology is the variability of tones. There are six different tones in the Vietnamese language, and the meaning of a word can vary depending on which tone is used. This means that speech recognition technology must be able to accurately identify and differentiate between the different tones in order to accurately recognize Vietnamese speech. This can be difficult, as tones can be subtle and difficult to differentiate, especially for non-native speakers.

In addition to the challenges posed by the tonal nature of Vietnamese, there are also challenges related to the diversity of accents and dialects within the language. Vietnamese is spoken by millions of people in Vietnam and around the world, and there are many different regional accents and dialects. This can make it difficult for speech recognition technology to accurately recognize all forms of Vietnamese speech.

Despite these challenges, there have been some promising developments in Vietnamese speech recognition technology in recent years. For example, researchers have been working on developing deep learning algorithms that can accurately recognize and differentiate between the different tones in Vietnamese speech. These algorithms use neural networks to analyze speech data and identify patterns in the way tones are used in Vietnamese.

Another promising development is the use of speech synthesis technology to improve the quality of speech data for training speech recognition systems. By using speech synthesis technology to generate high-quality speech data, developers can create larger and more diverse datasets for training speech recognition systems.

Datatang Vietnamese Speech Data Solutions

760 Hours - Vietnamese Speech Data by Mobile Phone

1751 Vietnamese native speakers participated in the recording with authentic accent. The recorded script is designed by linguists and covers a wide range of topics including generic, interactive, on-board and home. The text is manually proofread with high accuracy. It matches with mainstream Android and Apple system phones.

500 Hours – Vietnamese Conversational Speech Data by Mobile Phone

The 500 Hours – Vietnamese Conversational Speech Data collected by phone involved more than 750 native speakers, developed with a proper balance of gender ratio. Speakers would choose a few familiar topics out of the given list and start conversations to ensure the dialogue's fluency and naturalness. The recording devices are various mobile phones. The audio format is 16kHz, 16bit, uncompressed WAV, and all the speech data was recorded in quiet indoor environments. All the speech audio was manually transcribed into text content, and the start and end timestamps of each effective sentence and speaker identification, including gender, were also annotated. The accuracy rate of words is ≥ 98%.

400 Hours - Vietnamese Speech Data by Mobile Phone

285 Vietnamese native speakers participated in the recording with authentic accent. The text is manually proofread with high accuracy. It matches with mainstream Android and Apple system phones.

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