AudioLDM2ProjectionModel  
A simple linear projection model to map two text embeddings to a shared latent space. It also inserts learned
embedding vectors at the start and end of each text embedding sequence respectively. Each variable appended with
`_1` refers to that corresponding to the second text encoder. Otherwise, it is from the first.  
Args:
text_encoder_dim (`int`):
Dimensionality of the text embeddings from the first text encoder (CLAP).
text_encoder_1_dim (`int`):