## About the Dataset
### 48 hours

This audio dataset contains 48 hours of Mandarin Chinese Speech Data in various domains, recorded by speakers from PRC.

Domain distribution per dataset:

- 12.12 hours of Banking
- 11.88 hours of Insurance
- 11.93 hours of Retail
- 12.4 hours of Telecommunication

IVR stands for Interactive Voice Response. The Spontaneous IVR data is created by having a human respond to an IVR system. The human (playing a customer) is following simplified real-life scenarios, making a spontaneous query on the given topic. The IVR system will ask the human to repeat his/her query in 2 more different ways. The speech is then transcribed. In rare cases, the IVR system is mimicked by another human. The recording is done via telephony and is saved in 8khz 16 bit per channel.

The dataset is covered by [Defined.ai's standard license agreement](https://www.defined.ai/dataset/data-licence-agreement). The license agreement is perpetual and allows for the commercialization of all models built on the data.

Other characteristics:

- Audio format: WAV
- Recording environment: noisy, silent
- Communication band: narrowband
- Sample rate: 8Hz
- Device type: mobile

## Samples

Check this 5-minute audio sample [here](https://defineddata.blob.core.windows.net/samples/AFI_zh-cn_single-spontaneous-IVR_banking_30m_v01_Sample/Audio/ba474f34-275b-4a65-8948-d25d341e2825.wav?se=2024-06-15T17%3A05%3A09Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=iWjw%2BCnLPJth9mcE63Zg70m4v4gO8tqvnrSWzFK9MNQ%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/IVR_Chinese_Banking_Short_Transcription_9c13870ae0.tsv)

[Download Free 30-minute Sample](https://defineddata.blob.core.windows.net/samples/AFI_zh-cn_single-spontaneous-IVR_banking_30m_v01_Sample/AFI_zh-cn_single-spontaneous-IVR_banking_30m_v01_Sample.zip?se=2024-06-15T17%3A05%3A09Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=iWjw%2BCnLPJth9mcE63Zg70m4v4gO8tqvnrSWzFK9MNQ%3D)

Download Free 30-minute Sample

Speech

Mandarin Chinese (PRC) Spontaneous Dialogue

Mandarin Chinese (PRC) Scripted Monologue 

English Spontaneous Dialogue

You might also be interested in these audio datasets:

Mandarin Chinese Spontaneous IVR

## About the Dataset
### 1082 hours

This audio dataset contains 1082 hours of Mandarin Chinese Speech Data in Banking, Telecommunication, Insurance and Retail domains, recorded by native Mandarin Chinese speakers from PRC.

Domain distribution per dataset:

- 220.5 hours of Banking
- 261.88 hours of Insurance
- 281.47 hours of Retail
- 318.67 hours of Telecommunication

Defined.ai creates scenarios for our crowd members to follow, which they study beforehand. They then record a conversation, one speaker playing the agent, the other speaker “playing out” the scenario with spontaneous content. The recording is done via telephony and is saved in 8khz 16 bit per channel. That content is then transcribed.

The dataset is covered by [Defined.ai's standard license agreement](https://www.defined.ai/dataset/data-licence-agreement). The license agreement is perpetual and allows for the commercialization of all models built on the data.

Other characteristics:

- Audio format: WAV
- Recording environment: noisy, silent
- Bits per sample: 16
- Communication band: broadband
- Sample rate: 8Hz

## Samples

Check this 5-minute audio sample [here](https://defineddata.blob.core.windows.net/samples/ADR_zh-cn_multi-spontaneous_telco_B1_v01_30m_Sample/Audio/3854204e-97d2-4a6d-a7b6-d25483a12c7d.wav?se=2025-07-11T14%3A59%3A23Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=aek/N0AmadNo27aTShHl36FDNmeLYBaXmlm9bG2DTDM%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_Mandarin_Chinese_Short_Transcription_7812162b6e.tsv?updated_at=2023-06-06T13:45:51.924Z).

## About the Dataset
### 382 hours

This audio dataset contains 382 hours of Mandarin Chinese Speech Data in generic domain.

The speakers are presented with a prompt (script) and asked to read it out loud and record. Our clients will receive an audio recording, the prompt and information about the speaker. The audio is recorded on-device, typically in 16Khz 16 bit. We also provide information on which device each record was recorded.

The dataset is covered by [Defined.ai's standard license agreement](https://www.defined.ai/dataset/data-licence-agreement). The license agreement is perpetual and allows for the commercialization of all models built on the data.



## About the Dataset
### 3345 hours

This audio dataset contains 3345 hours of English Speech Data in various domains, recorded by native speakers from the UK, the US, Ireland, Australia, and India.

There are **1309 hours of English (US)** human-to-human audio with the following domain distribution per dataset:
- 321.37 hours of Banking
- 192.03 hours of Insurance
- 51.32 hours of Retail
- 45.68 hours of Telecommunication
- 198.62 hours of Generic domain
- 500.22 hours of Healthcare / Retail

There are **996 hours of English (UK)** human-to-human audio with the following domain distribution per dataset:
- 225.53 hours of Banking
- 196.05 hours of Insurance
- 189.67 hours of Retail
- 203.67 hours of Telecommunication
- 181.38 hours of Generic domain

There are **702 hours of English (India)** human-to-human audio with the following domain distribution per dataset:
- 173.55 hours of Banking
- 187.08 hours of Insurance
- 168.62 hours of Retail
- 173.4 hours of Telecommunication

There are **304 hours of English (AU)** human-to-human audio with the following domain distribution per dataset:
- 86.03 hours of Banking
- 76.35 hours of Insurance
- 79.37 hours of Retail
- 62.73 hours of Telecommunication

There are **34 hours of English (Ireland)** human-to-human audio with the following domain distribution per dataset:
- 28.3 hours of Insurance
- 6.58 hours of Generic domain

Defined.ai creates scenarios for our crowd members to follow, which they study beforehand. They then record a conversation, one speaker playing the agent, the other speaker “playing out” the scenario with spontaneous content. The recording is done via telephony and is saved in 8khz 16 bit per channel. That content is then transcribed.

The dataset is covered by [Defined.ai's standard license agreement](https://www.defined.ai/dataset/data-licence-agreement). The license agreement is perpetual and allows for the commercialization of all models built on the data.

Other characteristics:

- Audio format: WAV
- Recording environment: noisy, silent
- Bits per sample: 16
- Communication band: broadband
- Sample rate: 8Hz

## Metadata Distribution
### Australia
![Spontaneous_En_Au_Gender.png](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_En_Au_Gender_91b267a1cc.png)
![Spontaneous_En_Au_Age.png](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_En_Au_Age_60e48eeca6.png)
![Spontaneous_En_Au_Accents.png](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_En_Au_Accents_e683db2545.png)

## Short Audio Samples
- [English (UK)](https://defineddata.blob.core.windows.net/samples/AFI_en-gb_multi-spontaneous_banking_30m_v01_Sample/Audio/a2d24fc5-da9d-4ffe-aba3-5b73dccf5237.wav?se=2024-06-15T16%3A49%3A44Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=a%2B2BmW0bflObwTrc0Xli6Blg/yyKxqrCwyqNkg9rWeo%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_English_UK_Banking_Short_Transcription_42d5aaed87.tsv)
- [English (India)](https://defineddata.blob.core.windows.net/samples/AFI_en-in_multi-spontaneous_banking_30m_v01_Sample/Audio/5bb7a3eb-db5e-4cc0-a3d2-6f11f00711b2.wav?se=2024-07-13T22%3A32%3A34Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=mZy7yOT4039to6Uqr3RE4R8XjhnWZ6sAZ2EiaJx/0sI%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_English_India_Short_Transcription_679275bf52.txt?updated_at=2023-06-06T15:22:23.708Z)
- [English (AU)](https://defineddata.blob.core.windows.net/samples/AFI_en-au_multi-spontaneous_banking_30m_v01_Sample/Audio/dd8bfb26-003a-4da5-ba07-5acde431b0c0.wav?se=2024-06-15T15%3A20%3A19Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=wiIvr8sC5QPZh77G%2Bl0D40XaaOwBft7Dcui66MA3aFI%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_English_Australia_Short_Transcription_7301ed0f39.tsv?updated_at=2023-06-06T14:54:56.892Z)
- [English (Ireland)](https://defineddata.blob.core.windows.net/samples/AFI_en-ie_multi-spontaneous_insurance_B1_v01_30m_Sample/Audio/afe8facd-9c34-48fe-a2a5-7d8ce377807b.wav?se=2025-07-06T13%3A12%3A14Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=ZY%2BhyzDxhmtJG80KR0lCLwOPVjVK2Z9RW3IyM4AXf2Y%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_English_Ireland_Short_Transcription_877343e4a7.tsv?updated_at=2023-06-06T15:26:39.452Z)
- [English (US)](https://defineddata.blob.core.windows.net/samples/JPT_en-us_multi-spontaneous_banking_30m_v01_Sample/Audio/b213bc4f-4f61-463e-837a-fe6bd00df5f9.wav?se=2024-06-15T22%3A49%3A38Z&sp=r&sv=2020-06-12&ss=b&srt=o&sig=zneqq2xQ73KK9l9ehzqVO4qdfj8er56vclSMhJ7HDK8%3D). Transcription for the sample is also [available](https://prdstrapimediastorage.blob.core.windows.net/prdstrapimediastorage/assets/Spontaneous_English_US_Banking_Short_Transcription_b667de8c76.tsv)




3345 hours recorded by speakers from the UK, the US, Ireland, Australia, and India