Cornet acoustique (mars 1936)

Cornet acoustique (mars 1936). La personne installée dans l'ouverture doit pouvoir entendre les sons émis à plusieurs kilomètres de distance. L'axe permet d'orienter le dispositif selon la zone d'émission. Office national des recherches scientifiques et industrielles et des inventions.

Sur le Boulevard Jonathan Bélanger

A sheet music (page 98 of 1679)

Lyric Prose and Melodrama as Forms of Opposition to Nazi Barbarism

Cornet acoustique (mars 1936)

Lyric Prose and Melodrama as Forms of Opposition to Nazi Barbarism

Music, Sound, and Technology in America: A Documentary History of

Centenaire – bestofclassic

SBO February by SBO School Band & Orchestra - Issuu

Squidco: Coleman, Ornette: Ornette At 12, Crisis & Man On The Moon

In situ evidence for continental crust on early Mars

Cornet Acoustic Personal Monitor™ - Chasons Music

Past Issues - Acoustics Today

The Harmony Company, est. 1892 - Made-in-Chicago Museum

MBM Times Issue #6 by Manhattan Beach Music - Issuu