Started working on the DSP. Turns out something is wonky. Trouble with one or more of the knobs in the core. After putting a couple of debug statements into the asm, Looks like one knob is awol and/or tied into another's signal path. At any rate, whatever the cause, one is stuck at 0x400000 permanently, but the GUI for debugging has the knob being moved by another knob. That is not good.
Despite the hurdle, it did cause me to go into investigation mode and have a look at all the source. That was definitely a good thing, and now I'm comfortable digging into it. It's funny how all the texts and stuff on DSP make it sound like it is difficult - something only for people that are not you, etc. When really it's normal everyday programming -- it just happens that eventually your program enters a function which contains some math operations.
So, I guess, at the root of it, that's all "mathematics" really is -- a bunch of data getting passed around between registers... on paper... with a pencil.
Showing posts with label gear. Show all posts
Showing posts with label gear. Show all posts
20090703
20090620
20090204
A new adventure
Having done pretty well with MCUs and assembly, I'm going to try moving on to DSP land. Picked up a Line 6 Tone Core developer kit. Looking forward to seeing what this DSP business is all about. I know the signal processing maths, but pretty much nil about implementing audio processing in code. Can't wait.
20090201
Wow my walls and curtains are ugly
This is my command station. From this cockpit, I steer my glorious wooden abode and its inhabitant(s) through the lines of light, ranged in the non-space of the mind.
20080722
Vim-deo
Put up a video at Vimeo a few days ago. Just a bit of messing around with Vermona DRM1mkii. Was mainly running a sound-quality comparison with YouTube. Vimeo wins - easily. Kind of makes me anxious to put up some audio-visual pieces...
...and also to fabricate and/or program a non-step-sequencer. Not sure how I will do that. On the one hand, doing a hardware PIC-based version would be great for keeping my assembly language chops up, but otoh, a C# program that renders to MIDI file would be good for other sorts of practice.
I think I will work on music and videos for a while and since the new FL Studio (8) is satisfactory in the interim. Now that laptop is around, I have a free platform for rendering some Premiere/AfterFX work.
Here's the vid...
...and also to fabricate and/or program a non-step-sequencer. Not sure how I will do that. On the one hand, doing a hardware PIC-based version would be great for keeping my assembly language chops up, but otoh, a C# program that renders to MIDI file would be good for other sorts of practice.
I think I will work on music and videos for a while and since the new FL Studio (8) is satisfactory in the interim. Now that laptop is around, I have a free platform for rendering some Premiere/AfterFX work.
Here's the vid...
20080714
Re-in stall
Looking to start using the laptop as the main music and video workstation, so I gave in and reinstalled Vista. The biggest issue with XP was trying to find proper drivers for some of the features, most importantly the ieee1394 ports. Since I'll be using the AudioFire2 with the laptop now, that pretty much forced my hand. I'll miss XP. (Windows 2000 is still the best (only?) non-BS-OS, but life goes on. Well, I guess DOS was about as non-BS as possible.)
So anyway, to compliment my new gear setup, I decided to get around to grabbing my free upgrade to FLStudio 8. After installing, the longtime desire for a plain ol' multitracker / portastudio manifested as an upgrade to the Producer Edition for the audiotrack-in-playlist support. Hopefully that works like I'm imagining it will. I think FLStudio has finally surpassed Cubase and Logic. No joke.
While I was at it, I grabbed Visual Studio 2008 Standard as well because VS2005 on Vista was a real pita the first time around.
In other news, I picked up two books for CMMI. CMMI SCAMPI Distilled: Appraisals for Process Improvement and CMMI Assessments: Motivating Positive Change. I hope they're decent. Can't be too bad, I imagine. Report later.
Received my ITIL score: 37/40 for 92.5%. I missed one question in each of Service Desk / Incident Mgmt, Problem Mgmt, and Service Level Mgmt. Those were the areas I was most comfortable with, so I probably didn't pay close enough attention to the questions. :o
So anyway, to compliment my new gear setup, I decided to get around to grabbing my free upgrade to FLStudio 8. After installing, the longtime desire for a plain ol' multitracker / portastudio manifested as an upgrade to the Producer Edition for the audiotrack-in-playlist support. Hopefully that works like I'm imagining it will. I think FLStudio has finally surpassed Cubase and Logic. No joke.
While I was at it, I grabbed Visual Studio 2008 Standard as well because VS2005 on Vista was a real pita the first time around.
In other news, I picked up two books for CMMI. CMMI SCAMPI Distilled: Appraisals for Process Improvement and CMMI Assessments: Motivating Positive Change. I hope they're decent. Can't be too bad, I imagine. Report later.
Received my ITIL score: 37/40 for 92.5%. I missed one question in each of Service Desk / Incident Mgmt, Problem Mgmt, and Service Level Mgmt. Those were the areas I was most comfortable with, so I probably didn't pay close enough attention to the questions. :o
20080711
20080701
Time warp
Jomox T-Resonator came in the post today. Didn't get a chance to try it out yet. Photos and demo mp3s within 24 hours. [Well.. too tired to get to it yesterday -- still trying to figure out a comfortable setup for the gear, and need to wire everything to the mixer.]
20080629
20080512
440 Hz wav
http://lumin.us/msr/forums/440hz.wav
Format: .wav
Resolution: 16 bit
Sample rate: 44100 Hz
Size: 882,044 bytes
Length: 10 seconds
Channels: monaural
Amplitude: -1 db
Format: .wav
Resolution: 16 bit
Sample rate: 44100 Hz
Size: 882,044 bytes
Length: 10 seconds
Channels: monaural
Amplitude: -1 db
20080506
State of the nation
That's causing deprivation.
Current status...
Took the modular out of the telecom rack, where it looked like a decorated rendition of Kubrick's monolith, and placed it into two SKB pop up racks I had laying around. Power modules and supply are affixed to the insides with screws and washers. (Battery powered drills are handy, especially when free.) The walls of the cases are quite robust, so I don't anticipate any problems.
Gear rearrangement in itself is nothing new, but I did something else today that has been the first new anti-intertial activity in quite a while -- I ordered some kits from Synthesis Technology. Not an amazing feat considering it doesn't take much to type in some numbers and hit 'order', except that I didn't know kits were still available. Luckily, Matrix and TJ, a MOTM-centric blogger, relayed the information out into the cyber on account of there being a 10%-off sale. Gonna have to get some Synthesizers.com blanks for mounting; will be a good chance to try out methods for front-panel artwork. Don't think I really wanna deal with silkscreening so we'll see how the modelical method works.
First kit is the MOTM-120 (4x) sub-octave generator. Simple idea really, just some 4-bit counter ICs which generate something approaching a small army of square waves, but they've included a potentially interesting function that ring mods A and B inputs. Four bits by four bits equals the all important sixteen. Techno serendipity. The sub octs get multiplexed in, going deeper and deeper as the sixteen steps unfold. To use the most annoying word ever invented, I'm curious to see how texturally stable the effect can be made by mitigating the lower frequencies with the Synthesizers.com Q107 SVF HPF. Highspeed B-signal testing will also be a must.
Second kit is the MOTM-380 quad LFO in a one-space unit. Kind of plain, and definitely not as cool as the dual Oakley Little LFO + MFOS offsetters module I cobbled together, but you really can't argue with the single-space footprint, plus the self-mixing of these MOTM LFOs is an interesting feature with alot of potential for cheaply attaining non-symmetric (in the short-term time domain) waveforms. Er, one more thing, the LFOs are free running so there's no syncing (i.e., for trigging of envelope generators), and for that matter, no square waves. Rectifying will produce some useful shapes to be sure, and the potential for using the LFOs in lazy evolution duties will be fine (no pun intended). Did I mention it's only 1 space wide?
So, that's the news on the gear front. It's a battle I'd burnt out on, since the social payoff has completely waned, but whatever -- ultimately, the goal is to create a two hour mix on-the-fly. No rest for the weary, and frankly I'm hungry for it. After not doing anything creative for the past four months I'm chomping at the bit to get the whole System of Systems running again.
Current status...
Took the modular out of the telecom rack, where it looked like a decorated rendition of Kubrick's monolith, and placed it into two SKB pop up racks I had laying around. Power modules and supply are affixed to the insides with screws and washers. (Battery powered drills are handy, especially when free.) The walls of the cases are quite robust, so I don't anticipate any problems.
Gear rearrangement in itself is nothing new, but I did something else today that has been the first new anti-intertial activity in quite a while -- I ordered some kits from Synthesis Technology. Not an amazing feat considering it doesn't take much to type in some numbers and hit 'order', except that I didn't know kits were still available. Luckily, Matrix and TJ, a MOTM-centric blogger, relayed the information out into the cyber on account of there being a 10%-off sale. Gonna have to get some Synthesizers.com blanks for mounting; will be a good chance to try out methods for front-panel artwork. Don't think I really wanna deal with silkscreening so we'll see how the modelical method works.
First kit is the MOTM-120 (4x) sub-octave generator. Simple idea really, just some 4-bit counter ICs which generate something approaching a small army of square waves, but they've included a potentially interesting function that ring mods A and B inputs. Four bits by four bits equals the all important sixteen. Techno serendipity. The sub octs get multiplexed in, going deeper and deeper as the sixteen steps unfold. To use the most annoying word ever invented, I'm curious to see how texturally stable the effect can be made by mitigating the lower frequencies with the Synthesizers.com Q107 SVF HPF. Highspeed B-signal testing will also be a must.
Second kit is the MOTM-380 quad LFO in a one-space unit. Kind of plain, and definitely not as cool as the dual Oakley Little LFO + MFOS offsetters module I cobbled together, but you really can't argue with the single-space footprint, plus the self-mixing of these MOTM LFOs is an interesting feature with alot of potential for cheaply attaining non-symmetric (in the short-term time domain) waveforms. Er, one more thing, the LFOs are free running so there's no syncing (i.e., for trigging of envelope generators), and for that matter, no square waves. Rectifying will produce some useful shapes to be sure, and the potential for using the LFOs in lazy evolution duties will be fine (no pun intended). Did I mention it's only 1 space wide?
So, that's the news on the gear front. It's a battle I'd burnt out on, since the social payoff has completely waned, but whatever -- ultimately, the goal is to create a two hour mix on-the-fly. No rest for the weary, and frankly I'm hungry for it. After not doing anything creative for the past four months I'm chomping at the bit to get the whole System of Systems running again.
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