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Description
La Casa Milà, also known as La Pedrera, is one of the most emblematic works of Antoni Gaudí and a landmark of Barcelona’s architectural heritage. Although its architectural and historical significance has been widely studied, its acoustic behaviour has received little specific attention. This article presents an acoustic experimental study of a historical apartment located within the building. The apartment has been preserved in its original state since 1911, retaining period furnishings and architectural features designed by Gaudí, including mouldings, floors, doors, and windows. The space is characterised by irregular geometries such as undulating ceilings, non-parallel walls, and complex volumes, enhancing sound diffusion. An acoustic measurement campaign was conducted to evaluate the acoustic comfort of typical domestic spaces within the flat. Measurements were carried out in the kitchen, children’s bedroom, living room, and master bedroom, including its adjoining bathroom. Impulse responses were recorded in accordance with ISO 3382-2, using an omnidirectional sound source and an exponential sine sweep excitation signal. Source and receiver positions were adapted to the specific characteristics of each room. Key acoustic parameters were derived, including reverberation time (T30), early decay time (EDT), clarity (C80), and speech intelligibility (D50). The results indicate highly favourable acoustic conditions across all measured spaces, highlighting the intrinsic acoustic quality of Gaudí’s domestic architecture and the relevance of acoustic assessment in architectural heritage studies.