Abstract

A method for obtaining visual feedback for vowel quality is disclosed. By filtering and decomposing audio signals in formants, one or more software modules and/or applications may determine the type of phoneme in an audio signal that corresponds to a vowel. First and second formants may be measured in their frequencies; subsequently frequencies values of first formant and second formant may be assigned as X and Y coordinates, respectively. These (X, Y) coordinates may be used for graphing points and trajectories of the points in a Cartesian coordinate system while the user is pronouncing a vowel. Thus, graphic feedback for vowel pronunciation may be obtained.

IPC Classes  ?

• G10L 21/00 - Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility

Abstract

Disclosed here is a yarn feeding device of use in making textile products by hand.

IPC Classes  ?

• D04B 3/04 - Finger protectorsThread tensioners
• D05B 91/04 - ThimblesFinger shieldsPalm protectors

Abstract

Disclosed here is a type of crochet hook of use in piercing a material for crocheting purposes, where the crochet hook's end may be tapered at a sufficiently acute angle so as to allow the end to pierce the desired material.

IPC Classes  ?

• D04B 3/02 - Needles