Translate the given Spanish text to English

Example input: A method for converting a series of m-bit information words to a modulated signal is described.
Example output: Se describe un método para convertir una serie de palabras de informacion de bits m a una señal modulada.
Example explanation: The translation is fluent, formal, and accurate
Q: The invention relates to a device formed by a casing and two expansion pipes.
A:
El dispositivo está conformado por una carcasa y dos tubos de expansión.