Abstract: Speech analysis apparatus converts sounds to electrical signals which are fed via a selectable low pass filter to extract the fundamental pitch frequency while attenuating the increase in energy with voice pitch and the influence of higher voice pitch harmonic frequencies. The pitch frequency representing signals are fed via a frequency to voltage transducer to a visual display device.
Abstract: Speech analysis apparatus transduces speech sounds to electrical signals which are fed via a selectable low pass to extract the pitch frequency. The pitch frequency representing signals are fed via a frequency to voltage transducer to a visual display device.