Research on the bandwidth effect on binaural loudness summation on the Cam scale
Researches have showed that stimulus bandwidth has an effect on binaural loudness summation. Yet there was no systematic research on that. This paper presents a research on binaural loudness summation adopting different stimulus bandwidths on the Cam scale. The loudnesses of dichotic
stimuli with interaural level differences (ILDs) of 2-12 dB were matched by those of diotic stimuli at the same bandwidth (reference stimuli). The center frequency of stimuli was 1 kHz and the bandwidths of stimuli were 1-ERB, 3-, and 5-ERBs. Results showed that the wider the stimulus bandwidth,
the more slowly the overall loudness increased with ILD. A function describing the characteristic of overall loudness changing with ILD and bandwidth was derived.
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Document Type: Research Article
Affiliations: Shanghai Academy of Environmental Sciences. Shanghai Engineering Research Center of urban environmental noise control. Shanghai, China
Publication date: 30 September 2019
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