Uncertainty of perceptual tone onset and tone frequency

Perceptual image quality: Effects of tone characteristics

Tone mapping refers to the conversion of luminance values recorded by a digital camera or other acquisition device, to the luminance levels available from an output device, such as a monitor or a printer. Tone mapping can improve the appearance of rendered images. Although there are a variety of algorithms available, there is little information about the image tone characteristics that produce ...

Development of a Perceptual Tone Mapping Operator

Perceptual equivalence of approximated Cantonese tone contours

This paper describes a perceptual study on approximated Cantonese tone contours. We believe that the perception of tone contours relies mainly on the major trend of pitch movement, and is not sensitive to the exact F0 values at particular time instants. The tone contours of individual syllables and the transition between them are approximated as a small number of linear movements. The effect of...

General perceptual contributions to lexical tone normalization.

Within tone languages that use pitch variations to contrast meaning, large variability exists in the pitches produced by different speakers. Context-dependent perception may help to resolve this perceptual challenge. However, whether speakers rely on context in contour tone perception is unclear; previous studies have produced inconsistent results. The present study aimed to provide an unambigu...

Perceptual learning of Cantonese lexical tones by tone and non-tone language speakers

Two groups of listeners, one of native speakers of a tone language (Mandarin Chinese) and one of native speakers of a non-tone language (English) were trained to recognize Cantonese lexical tones. Performance before and after training was measured using closed response-set identification and pairwise difference rating tasks. Difference ratings were submitted to multidimensional scaling (MDS) an...