Create README.md

add data_mini dataset readme file

README.md

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+---
+task_categories:
+- token-classification
+language:
+- zh
+tags:
+- tone
+- pinyin
+- sentence
+- audio
+size_categories:
+- 100M<n<1B
+---
+
+
+## Dataset Details
+- Welcome to the Single-Speaker Mandarin Audio Dataset! This dataset is a curated subset extracted from a larger collection, focusing on audio recordings of a single speaker. Each audio file is accompanied by valuable linguistic annotations, including Pinyin transcriptions, tone information, and onset and offset details.
+
+### Dataset Description
+
+<!-- Provide a longer summary of what this dataset is. -->
+
+
+
+- **Speaker:** The dataset exclusively features recordings of a single Mandarin speaker, providing consistency for various linguistic analyses and applications.
+- **Pinyin Transcriptions:** Each audio file comes with a corresponding Pinyin transcription, offering a phonetic representation of the spoken Mandarin.
+- **Tone Information:** Tone annotations are included to capture the tonal characteristics of the spoken language. This feature is essential for tone-related studies and applications.
+- **Onset and Offset Details:** Precise information about the onset and offset of each audio segment is provided. This allows for accurate segmentation and analysis of the spoken content.
+
+### Dataset Sources [optional]
+
+<!-- Provide the basic links for the dataset. -->
+
+- Subset of the Original Kaggle Dataset
+
+## Uses
+
+- Use for model evaluation or demo