license:cc-by-nc-sa-4.0 region:us
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license: cc-by-nc-sa-4.0
---

This dataset contains precomputed audio features designed for use with the [openWakeWord library](https://github.com/dscripka/openWakeWord).
Specifically, they are intended to be used as general purpose negative data (that is, data that does *not* contain the target wake word/phrase) for training custom openWakeWord models.

The individual .npy files in this dataset are not original audio data, but rather are low dimensional audio features produced by a pre-trained [speech embedding model from Google](https://tfhub.dev/google/speech_embedding/1).
openWakeWord uses these features as inputs to custom word/phrase detection models.

The dataset currently contains precomputed features from the following datasets.

## ACAV100M

The ACAV100M dataset contains a highly diverse set of audio data with multilingual speech, noise, music, all captured in real-world environments.
This is a highly effective dataset for training custom openwakeword models.

**Dataset source**: https://acav100m.github.io/

**Size**: An array of shape (5625000, 16, 96), corresponding to ~2000 hours of audio from the ACAV100M dataset. Each row in the array has a temporal dimension of 16, which at 80 ms per temporal step results in each row containing features representing 1.28 seconds of audio.


## False-Positive Validation Set

This is a hand-selected combination of audio features (representing ~11 hours of total audio) that serves as a false-positive validation set when training custom openWakeWord models.
It is intended to be broadly representative of the different types of environments where openWakeWord models could be deployed, and thus useful for estimating false-positive rates.

The contributing audio datasets are:

1) The entire [DiPCo](https://www.amazon.science/publications/dipco-dinner-party-corpus) dataset (~5.3 hours)
2) Selected clips from the [Santa Barbara Corpus of Spoken American English](https://www.linguistics.ucsb.edu/research/santa-barbara-corpus) (~3.7 hours)
3) Selected clips from the [MUSDB Music Dataset](https://sigsep.github.io/datasets/musdb.html) (2 hours)

Note that the MUSDB audio data was first reverberated with the [MIT impulse response recordings](https://huggingface.co/datasets/davidscripka/MIT_environmental_impulse_responses) to make it more representative of real-world deployments.
