With the rise of the talkies in the late 1920s, Arthur was among the many silent screen actors of Paramount Pictures initially unwilling to adapt to sound films. Upon realizing that the craze for sound films was not a phase, she met with sound coach Roy Pomeroy. It was her distinctive, throaty voice – in addition to some stage training on Broadway in the early 1930s – that eventually helped make her a star in the talkies. However, it initially prevented directors from casting her in films. In her early talkies, this "throaty" voice is still missing, and it remains unclear whether it has not yet emerged or whether she hid it. Her all-talking film debut was "The Canary Murder Case" (1929), in which she co-starred opposite William Powell and Louise Brooks. Arthur impressed only a few with the film and later claimed that at the time she was a "very poor actress ... awfully anxious to improve, but ... inexperienced so far as genuine training was concerned."