Applied Vibro-Acoustics, Inc. (AVA)

Applied Vibro-Acoustics, Inc. (AVA), registered in Japanese as 有限会社 生物振動研究所, is a small Japanese research and measurement company based in Higashihiroshima, Hiroshima Prefecture. It was established on 14 March 2005 with capital of 5 million yen and is led by representative director Naoki Sakurai, with Ryoichi Yamamoto serving as a director. The company describes its business as research and development for the quality evaluation of agricultural, forestry and fishery products and foods; the manufacture and sale of quality-evaluation instruments; commissioned physical-property measurement and analysis of such products; and food research. AVA's commercial activity centres on non-destructive testing services rather than mass-market consumer goods. Its service menu includes texture measurement (measuring the sound-emitting texture of foods), viscoelasticity measurement (deriving six indicators such as bulk modulus, shear modulus, Young's modulus and Poisson's ratio), fruit-ripeness measurement based on resonance vibration to estimate firmness, and the creation of softening curves that track ripeness over time and can predict the optimal eating window for fruit. Because the methods are non-destructive, the company emphasises that samples suffer no loss. Measurements are priced per test, with texture and viscoelasticity tests at 3,300 yen including tax and fruit-ripeness tests at 4,400 yen including tax, while a softening curve is quoted at 110,000 yen including tax for a sample set of 10 to 20 fruits. Typical sample categories span vegetables and fruits, snack foods such as potato chips, crackers and cookies, chocolate, rice crackers, frozen foods, and soft foods including bread, cake, cheese, omelette, mochi, tofu, yogurt, marshmallow, pudding, agar and udon. Fruit work has covered apples, peaches, melons, watermelons, pears, persimmons, mangoes, avocados, kiwifruit, oranges, grapefruit and tomatoes. Alongside firmness testing the company also performs sugar-content measurement and sensory tasting tests to characterise ripeness. The company operates from a head-office address in Saijo Showa-machi, Higashihiroshima, and a second office in Kagamiyama, Higashihiroshima, in the Create Core building. Its contact email uses a Hiroshima University domain, reflecting its academic roots in the region. In 2026 the company announced an office relocation effective 26 May 2026, with a change of telephone number and address, and published a summer Obon holiday closure notice. AVA remains a privately held, owner-managed enterprise focused on applied food-physics research and testing services for producers, processors and researchers in Japan.

Applied Vibro-Acoustics, Inc. was established on 14 March 2005 in Higashihiroshima, Hiroshima Prefecture, as a limited liability company (有限会社) with capital of 5 million yen. Its Japanese name, 生物振動研究所, translates roughly as 'Biological Vibration Research Institute', signalling its focus on the vibrational and acoustic properties of living and food materials. The company was founded under the leadership of Naoki Sakurai, who serves as representative director, with Ryoichi Yamamoto as a director. From its base in Higashihiroshima — a city known for Hiroshima University and its surrounding research cluster — the company built its business around applying vibro-acoustic and physical measurement techniques to the evaluation of food and agricultural produce. Its stated scope covers research and development for quality evaluation of agricultural, forestry and fishery products and foods; manufacture and sale of quality-evaluation instruments; commissioned physical-property measurement and analysis; and food research. The contact email on its corporate profile uses a Hiroshima University domain, underlining the academic ties that shaped its formation and continue to inform its work. Over the years AVA developed a service portfolio centred on non-destructive testing. Texture measurement captures the sound-emitting texture of foods; viscoelasticity measurement derives six physical indicators including bulk modulus, shear modulus, Young's modulus and Poisson's ratio; fruit-ripeness measurement uses resonance vibration to estimate firmness and is complemented by sugar-content measurement and sensory tasting; and softening-curve creation tracks ripeness over time to predict the optimal eating window and to identify defective fruit. The company has applied these methods across a wide range of samples, from vegetables and fruits to snack foods, chocolate, rice crackers, frozen foods and soft foods such as bread, cake, cheese, tofu, yogurt and udon. By the mid-2020s the company operated from a head office in Saijo Showa-machi, Higashihiroshima, and a second office in Kagamiyama, Higashihiroshima, in the Create Core building. In May 2026 it announced a relocation of its office effective 26 May 2026, with corresponding changes to its telephone number and address, and it continued to publish routine operational notices such as its Obon holiday closure. AVA remains a small, privately held, owner-managed enterprise dedicated to applied food-physics research and measurement services for Japanese producers, processors and researchers.

• Company established in Higashihiroshima, Hiroshima, with capital of 5 million yen.

• Office relocation takes effect, with change of telephone number and address.

A niche, research-driven measurement and testing specialist for food and agricultural quality evaluation, emphasising non-destructive methods and academic collaboration.

• Texture measurement

  Measures the sound-emitting texture of foods; priced at 3,300 yen including tax per measurement, with analysis report charged separately.

• Viscoelasticity measurement

  Measures viscoelasticity and derives six indicators: bulk modulus, bulk viscosity, shear modulus, shear viscosity, Young's modulus and Poisson's ratio; 3,300 yen including tax per measurement.

• Fruit ripeness measurement

  Estimates ripeness from resonance vibration to measure firmness, complemented by sugar-content measurement and sensory tasting; 4,400 yen including tax per measurement.

• Softening curve creation

  Tracks fruit ripeness over time to graph softening patterns, predict optimal eating time and identify defective fruit; 110,000 yen including tax for 10–20 samples.

1. 1ホーム | 有限会社 生物振動研究所 | 食材品質検査 | 広島県ava.co.jp
2. 2会社概要 | 有限会社 生物振動研究所ava.co.jp
3. 3製品情報 | 有限会社 生物振動研究所ava.co.jp
4. 4測定サービス | 有限会社 生物振動研究所ava.co.jp
5. 5Applied Vibro-Acoustics, Inc. (Japan) - Wikidatawikidata.org