This study evaluates the suitability of acoustic parameters for capturing breathy voice in non-pathological female speakers. Much existing literature on the acoustic analysis of voice quality (VQ) focuses on pathological speakers and/or sustained vowel productions. The limited work on more naturalistic speech (e.g. as needed for forensic casework) focuses on male speakers. Using studio-quality recordings from the PASR dataset, nine phoneticians (6 male, 3 female) read a passage in their normal (‘default’) and breathy voice multiple times. Acoustic parameters (H1−H2, H1*−H2*, H1−A1, H1*−A1*, CPP, HNR05/15/25/35) were automatically extracted using VoiceSauce. A linear mixed effects regression analysis showed significant interactions between acoustic parameters and speaker sex. In support of, our study confirms CPP as a relatively robust parameter for males and extends its suitability to females, with CPP and HNR particularly suitable for female breathy voice.