Tactual Patterns from Certain Vowel Qualities Instrumentally Communicated from a Speaker to a Subject's Fingers

Gault, Robert H.; Crane, George W.

doi:10.1080/00221309.1928.9920129

Cited by 33 publications

(16 citation statements)

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“…While Gault expressed interest in vibrotactile perception for the appreciation of music in at least “the lower and middle reaches of the musical scale” he carried out no experimental work on this topic. Gault and Crane [ 6 ] explored the vibrotactile representation of speech using a device called a ‘teletactor’, which had a vibrator for each finger of the hand. Knudsen [ 7 ] approached the physics of vibrotaction by creating an apparatus to apply vibration stimuli to the finger but was pessimistic about the potential for music to be presented in this way stating that it “would be almost void of melody or pitch coloring”.…”

Section: Introductionmentioning

confidence: 99%

Vibrotactile Presentation of Musical Notes to the Glabrous Skin for Adults with Normal Hearing or a Hearing Impairment: Thresholds, Dynamic Range and High-Frequency Perception

et al. 2016

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Presentation of music as vibration to the skin has the potential to facilitate interaction between musicians with hearing impairments and other musicians during group performance. Vibrotactile thresholds have been determined to assess the potential for vibrotactile presentation of music to the glabrous skin of the fingertip, forefoot and heel. No significant differences were found between the thresholds for sinusoids representing notes between C1 and C6 when presented to the fingertip of participants with normal hearing and with a severe or profound hearing loss. For participants with normal hearing, thresholds for notes between C1 and C6 showed the characteristic U-shape curve for the fingertip, but not for the forefoot and heel. Compared to the fingertip, the forefoot had lower thresholds between C1 and C3, and the heel had lower thresholds between C1 and G2; this is attributed to spatial summation from the Pacinian receptors over the larger contactor area used for the forefoot and heel. Participants with normal hearing assessed the perception of high-frequency vibration using 1s sinusoids presented to the fingertip and were found to be more aware of transient vibration at the beginning and/or end of notes between G4 and C6 when stimuli were presented 10dB above threshold, rather than at threshold. An average of 94% of these participants reported feeling continuous vibration between G4 and G5 with stimuli presented 10dB above threshold. Based on the experimental findings and consideration of health effects relating to vibration exposure, a suitable range of notes for vibrotactile presentation of music is identified as being from C1 to G5. This is more limited than for human hearing but the fundamental frequencies of the human voice, and the notes played by many instruments, lie within it. However, the dynamic range might require compression to avoid the negative effects of amplitude on pitch perception.

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Section: Introductionmentioning

confidence: 99%

Vibrotactile Presentation of Musical Notes to the Glabrous Skin for Adults with Normal Hearing or a Hearing Impairment: Thresholds, Dynamic Range and High-Frequency Perception

et al. 2016

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“…Other vibrotactile speech aids, such as the direct conversion of the speech wave to mechanical vibration used by Gault and his associates (Gault and Crane, 1928), or more modern "vocoder" techniques (Englemann and Rosov, 1975;Saunders, 1974) may also be supplying some fundamental frequency information. As Stratton and others have shown, some aspects of the control of voice fundamental frequency can be improved significantly using an alternate sensory modality to display the F o patterns of both the teacher and student, though little attempt has been made to delineate quantitatively the amount of information that can be received through particular displays when used for communicating F o patterns during ongoing speech (as compared to the nonreal-time display of a stored F o pattern of a short speech segment, as on a storage-type oscilloscope).…”

Section: Introductionmentioning

confidence: 99%

Encoding voice fundamental frequency into vibrotactile frequency

Rothenberg

Molitor

1979

The Journal of the Acoustical Society of America

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Measured in this study was the ability of eight hearing and five deaf subjects to identify the stress pattern in a short sentence from the variation in voice fundamental frequency (F0), when presented aurally (for hearing subjects) and when transformed into vibrotactile pulse frequency. Various transformations from F0 to pulse frequency were tested in an attempt to determine an optimum transformation, the amount of F0 information that could be transmitted, and what the limitations in the tactile channel might be. The results indicated that a one- or two-octave reduction of F0 vibrotactile frequency (transmitting every second or third glottal pulse) might result in a significant ability to discriminate the intonation patterns associated with moderate-to-strong patterns of sentence stress in English. However, accurate reception of the details of the intonation pattern may require a slower than normal pronounciation because of an apparent temporal indeterminacy of about 200 ms in the perception of variations in vibrotactile frequency. A performance deficit noted for the two prelingually, profoundly deaf subjects with marginally discriminable encodings offers some support for our previous hypothesis that there is a natural association between auditory pitch and perceived vibrotactile frequency.

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“…Preliminary work also was reported us ing a "multi unit-teletactor," which con tained five vibrators, one for each finger and the thumb (Gault and Crane, 1928). Although the added stimulation provided more tactile cues, results showed that little benefit was obtained with the more com plicated device.…”

Section: Early History Of Tactile Aidsmentioning

confidence: 99%

Tactile Aids for the Profoundly Deaf

Roeser¹

1985

Semin Hear

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Tactual Patterns from Certain Vowel Qualities Instrumentally Communicated from a Speaker to a Subject's Fingers

Cited by 33 publications

References 0 publications

Vibrotactile Presentation of Musical Notes to the Glabrous Skin for Adults with Normal Hearing or a Hearing Impairment: Thresholds, Dynamic Range and High-Frequency Perception

Vibrotactile Presentation of Musical Notes to the Glabrous Skin for Adults with Normal Hearing or a Hearing Impairment: Thresholds, Dynamic Range and High-Frequency Perception

Encoding voice fundamental frequency into vibrotactile frequency

Tactile Aids for the Profoundly Deaf

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