src/transformers/models/wav2vec2/modeling_flax_wav2vec2.py/FlaxWav2Vec2FeatureExtractor/__call__
class FlaxWav2Vec2FeatureExtractor:    def __call__(self, input_values):
        hidden_states = input_values[:, :, None]
        hidden_states = self.conv_layers(hidden_states)
        return hidden_states