1. Natural soundscapes experienced in parks are increasingly recognised as a valuable ecosystem service, yet urban parks soundscapes also commonly contain anthropogenic noise.2. While studies show bird calls can promote psychological restoration, the factors that might influence actual experiences of these sounds by individuals in urban parks are less clear. Equally, continual exposure to anthropogenic noise, such as vehicle traffic, is associated with negative health outcomes, but determinants influencing negative experiences of such sounds within a park soundscape are poorly understood.3. To address this gap we used an ex situ survey of over 4000 Australian residents and examined a range of spatial and social factors in influencing perceptions towards noticing and pleasantness of bird sounds and traffic noise within urban parks.4. The results indicate older age, recent park use, and valuing parks for uses such as exercising, socialising and to hear nature, were positively associated with pleasant bird sound experiences in parks. For traffic sounds, we found indicators of disadvantage, such as renting a home were associated with a higher likelihood of unpleasant experiences of traffic noise within parks. Notably, individuals using parks for social activities were still positively associated with pleasant bird sound experiences and less likely to perceive traffic sounds as unpleasant. Conversely, whilst those with greater nature-relatedness had a strong positive association with pleasant bird sound experiences, they were more likely to perceive traffic as unpleasant.5. Overall, these findings suggest that whilst many types of park users can potentially experience the beneficial effects from bird sounds, the detrimental effects of traffic noise may constrain these benefits in certain social groups, particularly those of greater socio-economic disadvantage. We discuss strategies to promote greater equity of therapeutic experiences of bird sounds in parks, whilst outlining traffic mitigation measures within urban parks.