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March 9, 2013 / consort3

Technology

Updated 21 May 2016

With my interest in loudspeakers I find it frustrating that there is is not a modern, economically viable way yet for amateur enthusiasts to do the crossover function. Sure, you can buy a Behringer DCX2496  or a MiniDSP but neither of these reflect the fact that the silicon can cost peanuts  (to be fair to the DCX2496 it is a versatile piece of kit). Behringer have introduced a cheaper version of the 2496 without the digital input. Recently I saw that Neil Davis (off the Techtalk forum and DSPIY (Thierry) off the French Home cinema forum had the same idea to use the Adau1701 with Sigmasound to create a package hobbyists could use. So we are almost there! I think TI and Freescale who have the technology are missing a trick here. The do stuff for pros but if a package was avaliable for amateurs they would make a fortune.
I was reading an old magazine article on crossovers I wrote in 1993 and I mentioned DSPs being used in the Celestion DLP600 and the Philips DSS930. It is disappointing that apart from a few high end makers DSP has not caught on in the 23 years since!

Neil Davis:

http://techtalk.parts-express.com/showthread.php?233263-Any-interest-in-miniDSP-controller

http://techtalk.parts-express.com/forum/tech-talk-forum/1271717-arduino-based-adau1701-minidsp

Thierry: in French but I am sure you can use google translate

http://www.homecinema-fr.com/forum/travail-de-groupe-diy/filtre-actif-a-base-de-dsp-t30029253.html

Sure Electronics have come up with a package to use the Adau1701. For about $40 in hardware you can be programming using Sigmasound:

http://www.diyaudio.com/forums/digital-line-level/294423-new-sure-electronics-adau1701-module-11.html

Or should we be looking at alternatives:

http://www.dspconcepts.com/sites/default/files/white-papers/2011%20AES%20-%20DSP%20vs%20Micro%20rev%202.pdf

http://rtaylor.sites.tru.ca/2013/06/25/digital-crossovereq-with-open-source-software-howto/

http://www.diyaudio.com/forums/digital-line-level/215379-dsp-xover-project-part-2-a.html

http://sourceforge.net/projects/rephase/

Another way of getting that functionality is to buy a home cinema amp with it built in, Onkyo TX-NR818:

http://www.avsforum.com/t/1412714/onkyo-tx-nr818-official-owners-thread-discussion

Yet another way is to buy a car amp with it built in, the Bassface Sq4.1

http://www.youtube.com/watch?v=cqYSp6jG3uU

Probably the cheapest way to go DSP is currently the Behringer Inuke 1000DSP which seems to have most of the features of the DCX2496 and has built in class D amps. If you do not like Class D you can get the Minidsp for $80 and build my darlington amps.
Talking of technology it was Joe Meek who used a lot of it to produce his hit Telstar which heralded the communications revolution. Hi Fi enthusiasts might be perturbed to find how much the sound is processed by the record producers. To this day there is a Joemeek compressor beloved of record producers.

Telstar: https://www.youtube.com/watch?v=BxpZ5rOMH4U

Johnny remember me :https://www.youtube.com/watch?v=7e4JXwd7XMo

Just like Eddie:https://www.youtube.com/watch?v=ZVIiQ8iNvKc

Mike Berry, Don’t you think its time. A mention for an unsung hero  Geoff Goddard

https://www.youtube.com/watch?v=kgNbN9mPiW4

Tornados theme from a summer place

https://www.youtube.com/watch?v=8fQUFdbXftQ

Tornados Robot with Scopitones video

https://www.youtube.com/watch?v=78CTDaR-4sw

Joe had more influence on technology than I first thought

http://tapeop.com/articles/100/joe-meek/

http://arpjournal.com/take-the-last-train-from-meeksville-joe-meeks%e2%80%99s-holloway-road-recording-studio-1963-7/

Not a lot of people know that Chas Hodges of Chas and Dave also Richie Blackmore were in Joe’s house band, the Outlaws. If you are a meekfreak you can join the Joe Meek society on Facebook here:

https://www.facebook.com/thejoemeeksociety#

The American equivalent to Joe Meek, Van Gelder:

http://www.lrb.co.uk/blog/2016/08/26/august-kleinzahler/the-van-gelder-sound/

They are going back to analogue mastering:

http://www.newyorker.com/business/currency/what-lady-gaga-finds-appealing-in-reel-to-reel?currentPage=all

Expensive analogue mixing desk:

https://theconversation.com/pink-floyds-1-8m-desk-shows-timeless-appeal-of-analogue-sound-74479

You could play Joe Meeks Telstar on this:

vinyl

More on the Highway and other car vinyl systems
http://arstechnica.com/gadgets/2016/03/highway-hi-fi-car-vinyl-player/

How to convert music into colours

http://spectrum.ieee.org/geek-life/hands-on/how-to-turn-music-into-colors-with-a-wifi-bridge

Are you allergic to radio waves?

http://www.popsci.com/science/article/2010-02/disconnected?page=0%2C1

http://www.motherjones.com/environment/2016/12/silicon-valley-cellphones-wifi-sickness-emf-hypersensitivity

Failure of record formats and the reason

http://www.bbc.co.uk/news/business-40697475

Who came first?

https://hbr.org/2017/07/whats-your-best-innovation-bet

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