Jargon and lingo glossary - Ba to Bh.
But the term is also used in its original meaning, 2) artificial product differentiation but in the case of the USA car industry where the term originates the big 3 local carmakers frequently sell the same product under different brands with different marketing strategies. For instance General Motors would sell the exact same car under the names Buick, Cadillac, Chevrolet, Oldsmobile and Pontiac, the difference would lie in the badge, colour options and trim, and in some cases GM would also offer different engine options, this is nota bene not to be confused with platform sharing as you see in European and Japanese cars, these were not related models but for all intents and purposes identical cars that were sold as Middle class (Buick), Luxury cars (Cadillac), Cheap and reliable (Chverolet), Conservative and dependable (Oldsmobile) and Young & sporty (Pontiac).
This sort of malarkey is not very common in the hi-fi industry but is not unknown in other sectors of the audio business and especially the pro-audio and car audio wings. An old example of badge engineering in this meaning of the term would be the sales of Soundblaster cards in the 90’s by Creative Technology but at one point in time the company had 3 identical cards available under the SB16 AWE (aka AWE Value), SB32 and SB32 AWE all in different price classes and in addition offered the electrically identical SB64 AWE that had slightly different memory and audio connectors and sold at a premium price but performed identically to the cheaper models.
Bakelite = Phenol formaldehyde
Popular for a time as a binding agent used in 78 Rpm. records where it was used not as a primary binder but to reduce the need for Shellac which is a natural substance and had a tendency to vary somewhat in price and availability with market fluctuations and the intervention of world wars etc. Became very popular in the early 1920's in the brown goods business since it could easily be mass manufactured in any shape or form via the use of moulds and heat curing, while being sufficiently strong to be used in these applications (browngoods are typically not handled much), is cheaper than woods or metals that need to be machined and can be dyed which is cheaper than painting the bloody thing, as such it is a predecessor to plastic as far as usage is concerned.
Bakelite can get a bit brittle with age especially if it experiences direct sunlight during its lifetime and while hard, it is not as strong as modern plastics but is chemically stable so the expected lifetime of Bakelite housings is typically longer than that of many of the materials that replaced it, and although it can react with some filler materials, that eventuality is very rare. In other words there is no need to treat them in order to prolong its life, Bakelite can absorb moisture if it experiences prolonged immersion, but drying it thoroughly will cure that. The surface gets slightly uneven in the heat curing process and the often rough fillers that were used to cut costs also added to this effect which gives it a more organic feel than what we have come accustomed to from other moulded resins (modern plastics are usually almost pure plasticines, i.e. no "filler" per se, only stabilisers, dyes etc.) and it is still occasionally used by manufacturers that have been using the material for a long time but there are few enough of them to make it's modern usage something of a novelty.
Balanced Ternary See --> Ternary
BBD = Bucket Brigade Delay
As this was a much cheaper and more reliable method of creating time delays than what had been previously used in the audio industry (typically tape, charged coils or even acoustic apparatus) these devices became popular in the 70's, primarily as generators of time modulation effects for musicians but also saw some use in crossovers and other audio reproduction applications.
It was never really popular though since creating a quality delay line was difficult (but not impossible) and while cheaper than electromechanical methods of creating a delay this technique was still more expensive than the op-amps and discrete transistors even if it gave longer potential delay times, there was a tendency amongst designers to clock the devices slowly to gain a longer delay rather than to add another BBD chip as a cost saving exercise which resulted in a lower sound quality.
A BBD chip is sometimes called half digital/half analogue because the output waveform looks stepped on one axis and analogue on the other but this is just a by-product of the clocking, there is no encoding of a signal inside a BBD chip.
The last manufacturer of generic audio and computer grade devices stopped manufacturing them in the mid 90's and although the technology is still used in some specialised IC's for voice recording applications it has in most instances been replaced by digital technology, more recently though a division of Behringer called Coolaudio has bought the rights to the most popular type of such chips and has made them available again in a CMOS version, this had lead to the reintroduction of BBD based guitar pedals that perform delay or time modulation based sound processing.
BeNeLux = Belgium, Nederland (Holland) and Luxembourgh./BeLux = Belgium & Luxembourgh
Be = Beryllium
The rigidity and the unusually high sound conduction speeds (about 13km per second) that come with it meant that it is a tempting material to use in transducers and we sometimes see them used as such in audio products, usually in tiny amounts and in particular in loudspeaker tweeters and in the cantilevers of gramophone pickups, in most cases as an alloy although the use of pure Be is known. The expense of fabricating products out to the material is really what has kept its usage down, Yamaha Corp. pioneered the use of the material in transducers, but they already had a workshop capable of working with Beryllium for their racing division.
Better known in the audio world is the Beryllium-Copper alloy, this is basically copper with a small amount of Beryllium alloyed with it, no more than 3 to 4% of the blend is Beryllium and usually it is much less, this is then heat-treated to increase its strength and conductivity. This alloy has some interesting properties, it is easy to work with but after hardening becomes very rigid with a high sound conduction speed and a good electrical conductor so it is commonly used in some specialised transducers
But Beryllium-Copper is also used in industry due to lack of spark generation and its tendency to harden with age, it is used for contact points in high vacuum tanks that are used for plasma coating with gasses and so on, for the same reason you will sometimes find hand tools made out of BC.