---
task_categories:
- audio-to-audio
size_categories:
- 100B<n<1T
---
# SFR-v1: FM Reception Speech Dataset

## Dataset Summary

**SFR-v1** consists of segmented 10-second FM reception audio clips accompanied by frame-level RSSI (Received Signal Strength Indicator) traces. This dataset is designed to support research in hybrid digital-analog communication, channel-aware audio recovery, speech enhancement, and FM channel modeling. It includes multiple content types (news, music, speech, male and female voices) under varying channel quality conditions.

## Audio Parameters

* **Sample rate**: 24 kHz
* **Bit depth**: 16-bit PCM
* **Channels**: Mono

## RSSI Parameters

* **Acquisition**: a probe signal used solely for RSSI acquisition and not part of the audio
* **Original interval**: \~60 ms per measurement (with timestamp)
* **Resampling**: interpolated to 50 ms per step, yielding 200 RSSI values per 10-second clip
* **Raw range**: approximately –65 dBm to –105 dBm
* **Normalization**: linearly mapped to \[4, 20], where higher values indicate poorer channel quality
* **Alignment**: RSSI sequences are frame-aligned with each audio segment

## License

Released under CC-BY-NC 4.0.

## Citation

Citation will be provided upon publication.