# Audio Embedding with CLMR

*Author: Jael Gu*


## Desription

The audio embedding operator converts an input audio into a dense vector which can be used to represent the audio clip's semantics.
This operator is built on top of the original implementation of [CLMR](https://github.com/Spijkervet/CLMR).
The [default model weight](./checkpoints/clmr_checkpoint_10000.pt) provided is pretrained on [Magnatagatune Dataset](https://paperswithcode.com/dataset/magnatagatune) with [SampleCNN](./models/sample_cnn.py).

```python
import numpy as np
from towhee import ops

audio_encoder = ops.audio_embedding.clmr()

# Path or url as input
audio_embedding = audio_encoder("/audio/path/or/url/")

# Audio data as input
audio_data = np.zeros((2, 441344))
sample_rate = 44100
audio_embedding = audio_encoder(audio_data, sample_rate)
```

## Factory Constructor

Create the operator via the following factory method

***ops.audio_embedding.clmr()***


## Interface

An audio embedding operator generates vectors in numpy.ndarray given an audio file path or audio data in numpy.ndarray.


**Parameters:**

​	None.


**Returns**: *numpy.ndarray*

​	Audio embeddings in shape (num_clips, 512).



## Code Example

Generate embeddings for the audio "test.wav". 

 *Write the pipeline in simplified style*:

```python
from towhee import dc

dc.glob('test.wav')
  .audio_embedding.clmr()
  .show()
```

*Write a same pipeline with explicit inputs/outputs name specifications:*

```python
from towhee import dc

dc.glob['path']('test.wav')
  .audio_embedding.clmr['path', 'vecs']()
  .select('vecs')
  .show()
```