Predictions from "speech banana" and audiograms: Assessment of hearing deficits in Thai hearing loss patients

A multi‐objective approach for improving real‐time audio peak reduction and speech clarity in a dental drill noise reduction device

“…A summary of the regression analysis can be found at the bottom of Appendix 1 and detailed regression results for each response, including the estimated term coefficients, can be found in Appendix 2. Second-order linear regression models derived from the results for the three responses are written as Equations ( 4) to (6). R P1 and R P2 represent the fitted response of objective peak reduction for the first and second noise peak, and R S represents the fitted response of objective speech clarity.…”

“…In an audiogram of sounds from the English language, speech phenomes cluster in a banana shape, which is often referred to as the ‘speech banana’ [5] as shown in Figure 2. It is broadly used in the assessment of hearing loss [5, 6] but can also indicate the frequency distribution of commonly used speech signals. From this figure, it can be observed that the majority of speech phenomes are within the range of 250 Hz to 5 kHz.…”

“…‘Speech banana’ frequency audiogram superimposed with a simplified frequency profile of an electric motor driven dental drill at no load (Adapted from Klingpornkun et.al [6])…”

Audiogram of Chinese Phonemes: Construction and Evaluation

“…Building on the average speech spectrum of French and Steinberg [17], Fant [18] used the first four-vowel formants, the main and high consonant areas, and the fundamental frequency of Swedish speakers to construct a Swedish version of the speech banana. A similar approach was used by Klangpornkun et al [16]; however, unlike Fant [18], who used sound pressure levels (dB SPL) to represent the intensity of Swedish speech sounds, the authors selected hearing levels (dB HL) to define the Thai speech region to directly superimpose it on an audiogram, increasing the clinical practicality of the speech banana.…”

“…With limited information on how the speech materials have been obtained and analyzed, accurately interpreting and using a speech banana is difficult. The phonetic-acoustic properties of phonemes can be determined by various factors, such as whether isolated tokens of speech or consecutive sentences are used, the speaker’s sex, and the number of speakers [13, 14]; nevertheless, Liden and Fant [15] and Klangpornkun et al [16] have exhaustively described the construction procedures. Building on the average speech spectrum of French and Steinberg [17], Fant [18] used the first four-vowel formants, the main and high consonant areas, and the fundamental frequency of Swedish speakers to construct a Swedish version of the speech banana.…”