Amplitude modulation detection with concurrent frequency modulation
Human speech consists of concomitant temporal modulations in amplitude and frequency that are crucial for speech perception. In this study, amplitude modulation (AM) detection thresholds were measured for 550 and 5000 Hz carriers with and without concurrent frequency modulation (FM), at AM rates cru...
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| Veröffentlicht in: | The Journal of the Acoustical Society of America 2016-09, Vol.140 (3), p.EL251-EL255 |
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| container_title | The Journal of the Acoustical Society of America |
| container_volume | 140 |
| creator | Nagaraj, Naveen K. |
| description | Human speech consists of concomitant temporal modulations in amplitude and frequency that are crucial for speech perception. In this study, amplitude modulation (AM) detection thresholds were measured for 550 and 5000 Hz carriers with and without concurrent frequency modulation (FM), at AM rates crucial for speech perception. Results indicate that adding 40 Hz FM interferes with AM detection, more so for 5000 Hz carrier and for frequency deviations exceeding the critical bandwidth of the carrier frequency. These findings suggest that future cochlear implant processors, encoding speech fine-structures may consider limiting the FM to narrow bandwidth and to low frequencies. |
| doi_str_mv | 10.1121/1.4962374 |
| format | Article |
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| ispartof | The Journal of the Acoustical Society of America, 2016-09, Vol.140 (3), p.EL251-EL255 |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection; AIP Acoustical Society of America |
| title | Amplitude modulation detection with concurrent frequency modulation |
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