Web Survey Bibliography
There has been a trend in the use of auditory stimuli in web survey. However, its use is still considered as novel method and available references are limited. This paper identifies six important factors that can affect survey error rate and need to be anticipated when using auditory stimuli in web questionnaires. These factors were derived from a pilot survey as part of a room acoustics study where only 80 out of the 160 invited subjects completed the survey. The six factors identified are: (1) computer hardware, (2) operating system, (3) Internet connectivity, (4) how familiar the subjects are with the survey content and terminology, (5) complexity of the survey interface, and (6) space where the survey was completed. The first factor is related to the type of computer and listening device that the subject is using. Since different operating system and software environment handles and processes auditory stimuli differently, to generate the stimuli may require additional software. Also since the auditory stimuli are streamed, the speed and reliability of the subject's Internet connectivity is a significant factor to produce an uninterrupted audio flow. The characteristic of the used passage for the auditory materials more significantly affected the assessment of the speech intelligibility than the need to have trained subjects for the particular study. Since the objective of using auditory stimuli is for hearing assessment, background noise where the survey is being completed can have significant affect on the final listening experience. These findings were then used to create a new web questionnaire; where a usability study was then conducted to evaluate how effective this new design is in resolving the above issues.
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