关键词: 车载扬声器；辐射面积；前腔效应；辐射特性；主观评价

Abstract: Due to limited cabin space and interior design requirements, the radiation surface of vehicle-mounted speakers is often partially obstructed, which can lead to a front cavity effect when severe, significantly impairing sound reproduction. This study investigates how different radiation areas affect speaker characteristics. The research begins with theoretical analysis of radiation area's impact on speaker performance, followed by practical comparisons of frequency responses under standard laboratory conditions. Finally, subjective listening tests are conducted to evaluate the effects of varying radiation areas on music playback quality. Results demonstrate that smaller grille radiation areas cause more pronounced energy loss due to the front cavity effect, with affected frequency ranges closer to human ear sensitivity zones and more noticeable perceptible impacts. The findings provide valuable references for optimizing speaker layout and radiation area selection during automotive product development.

Key words: car speaker; radiation area; front cavity effect; radiation properties; subjective assessment