Oohashi Ayuru

Born on April 28, 1984, Ohashi Ara is a voice actor born in Tokyo. Her previous stage name is Nakai Erika, Rika Nakajima

The hypersonic effect is used to explain the phenomenon reported by Tsutomu Oohashi et al. In a controversial scientific study that alleges that humans can not consciously hear ultrasound (frequencies above 20 kHz) It is a term. Frequency of the presence or absence of these phenomena has measurable influence on their physiological and psychological reactions. Many other studies are contradictory to the subjective response of high frequency audio, people with "good ears" are high fidelity systems that can play up to 30 kHz sound, Super Audio CD and high resolution DVD audio recording I heard. 44.1 kHz high resolution audio and normal CD sample rate

The discovery of this effect was first reported by Ohashi et al. At the 91st Audio Engineering Society in 1991, which had a great influence on the audio industry. State-of-the-art digital audio media such as Super Audio Disk (SACD), Digital Versatile Disk Audio (DVD Audio), Blu-ray Disc etc can record HFC which can not be heard. In addition, internet-based high-resolution audio distribution has started, and international interest has been gaining attention for the influence of silent HFC on sound quality. However, a wide variety of audio formats are independent of the frequency band required for sound quality, resulting in inconsistency in the specification of recordable and reproducible frequency range in a wide variety of digital media. Part of the reason is that the HFC frequency necessary for hypersonic effect is not systematically checked.

Frequency difference of inaudible high frequency sound influences brain activity: positive and negative supersonic effects