|
Just a comment from an old telecoms guy… Certainly studies were conducted over time, leading to contributions into the ITU-T for telephony development and requirements. You might end up following quite
a convoluted route to find the original source of those studies, but one contribution explaining something of this is “Supplement 11 to ITU-T Series P Recommendations”. Maybe also consider the “Telecommunications Engineer's Reference Book”, where section
30.4.9 covers sidetone… Consider also, given the possible effects of (e.g. dsp processing) the introduction of delays of just few milliseconds in the path of sidetone. This would change
effects from perception of sidetone to those of talker-echo. Best regards, Graham From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx]
On Behalf Of D Sen Thanks Ole. (Also to Dhurandar and JJ who responded outside of the list). I am interested in the Fletcher Effect and the Lombard effect. Both of those show variations in the speaker’s own voice (level, format shifts, etc) in the presence of noise or sidetone (i.e. own voice fed back into the ear usually through
headphones). Is there evidence to suggest that the Fletcher and the Lombard effect are essentially the same effect - where the perceived SNR of the ‘own voice’ is causing a level rise in the ‘own voice’? Also, while there is evidence to suggest that ‘own voice’ is
raised in the presence of noise or ‘lower feedback of the own voice through sidetone’, is there evidence of
lowering the voice to below nominal/ambient levels when the sidetone is raised substantially (where in the extreme case, the speaker would be whispering when the sidetone is played back at a high enough level). Thanks, Deep
On Jun 27, 2019, at 5:48 AM, Ole Adrian Heggli <oleheggli@xxxxxxxxx> wrote: Hi Deep, That depends on whether you are asking about a relative/absolute decrease of pitch or amplitude? Might be of interest, if it's pitch: Dixon Ward, W., & Burns, E. M. (1975). Pitch performance in singing without auditory feedback. The Journal of the Acoustical Society of America, 58(S1), S116-S116. Mürbe, D., Pabst, F., Hofmann, G., & Sundberg, J. (2002). Significance of auditory and kinesthetic feedback to singers' pitch control. Journal of Voice, 16(1),
44-51. Cheers, Ole Adrian Heggli tor. 27. jun. 2019 kl. 06:21 skrev D Sen <dsen@xxxxxxxx>:
|