Hence loudspeakers are not used without enclosures. Moreover, because the sound waves would travel different paths through the listening space, the sound waves of an unmounted speaker would reach the listener at slightly different times, introducing annoying echo and reverberation. Because the forward and rearward generated sounds are out of phase with each other, any interaction between the two in the listening space creates a distortion of the original signal that was intended to be reproduced.
#OPENSOURCE SPEAKER ENCLOSURE DESIGN DRIVER#
The enclosure prevents the sound waves generated by the rear-facing diaphragm of an open speaker driver from interacting with the sound waves generated at front of the speaker driver. Speakers require an enclosure to reproduce sound faithfully. 2: A cross-section of nautilus High-fidelity sound reproduction Inspired by the natural geometry of the shell of nautilus and understanding its function, audio engineers adopted logarithmic spiral shape to construct a sound system that not only looks great but also sounds better.
![opensource speaker enclosure design opensource speaker enclosure design](https://fixthephoto.com/images/content/loudspeaker-design-calculations-toolkit-interface-free-subwoofer-box-design-software-interface.png)
Its logarithmic coiled tapered tube saves space, and when it grows, it need not change its shell. 1: Logarithmic geometry of a nautilus shellĪ section cut of a nautilus shell is shown in Fig. The nautilus shell presents one of the finest natural examples of a logarithmic spiral as can be seen in Fig. The nautilus is a marine mollusc found in Indo-Pacific at a depth of several hundred metres. By drawing circular arcs connecting the opposite corners of squares, whose side lengths are successive Fibonacci numbers, that is, 1, 1, 2, 3, 5, 8, 13, 21, and 34, a logarithmic spiral can be created. As you may have noticed, each number in Fibonacci sequence is the sum of previous two numbers. Another benefit is that the distinctive snail shape enhances the ability of the ear to detect low-frequency sound.įibonacci was one of the most famous mathematicians who in 1202 introduced the Fibonacci sequence 0, 1, 1, 2, 3, 5, 8, 13, 21, and so on. The tight wound spiral shape of cochlea-in contrast to the stretched-out version found in birds or reptiles-is useful for packing a slew of hearing parts into a very small space. The stars and gas in the disk of a galaxy exert considerable gravitational force that helps maintain the spiral form against the tendency to disperse. The galaxies in space are differentially rotating, which causes a disturbance in the disc to wind up into a spiral form. It appears that Mother Nature has a general tendency to create objects in the shape of logarithmic spirals like arms of spiral galaxies, human cochlea, nautilus-a type of molluscs found in deep sea, spirula-a deep water squid, etc. But what if we did not have any constraint, and wanted to produce the best possible speakers? Nature has solution to most problems, including this.
![opensource speaker enclosure design opensource speaker enclosure design](https://no.mouser.com/images/microsites/next-gen-speaker-design-fig3.jpg)
These are made to give the best performance possible within the size and price constraints. We come across speakers in various shapes and sizes in our daily life.