Search found 3528 matches

by JR.
Mon Nov 23, 2020 6:45 pm
Forum: Pro Audio Design
Topic: variable gain amplifier using analog optoisolators
Replies: 1
Views: 31

Re: variable gain amplifier using analog optoisolators

welcome to the hard part... Over the decades Dbx (now That corp) have published multiple papers about dynamics processing. Simply any gain control is a multiplier so the control voltage modulates (multiplies) the signal so the side chain modulations are audible... Too fast of a release time constant...
by JR.
Mon Nov 23, 2020 11:26 am
Forum: The Peabody Lounge
Topic: Gentle persuasion over time
Replies: 165
Views: 18141

Re: Gentle persuasion over time

Indeed, sharpening and right steel is a must. Steel affects how often you need to resharpen... I recall back in the 60s I had a pocket knife with a blade made from soft steel... it would get dull almost immediately after sharpening. I used my long handle axe yesterday to set in 70 pecan tree fertil...
by JR.
Mon Nov 23, 2020 8:53 am
Forum: The Peabody Lounge
Topic: Guitar Center, Largest US Retailer Of Music Instruments, Files For Bankruptcy
Replies: 1
Views: 15

Re: Guitar Center, Largest US Retailer Of Music Instruments, Files For Bankruptcy

again... probably to scrape off bricks and mortar baggage to go 100% web sales.

JR
by JR.
Sun Nov 22, 2020 10:53 pm
Forum: The Peabody Lounge
Topic: The Corona Virus Hoax of 2020
Replies: 296
Views: 25022

Re: The Corona Virus Hoax of 2020

terkio wrote:
Sun Nov 22, 2020 7:09 pm
Where have I seen the story of one who had a positive test in a nostril and a negative in the other one ? :D
I think Elon Musk tested himself 4x and tied 2-2...

Many reports of repeat tests that disagree.

JR
by JR.
Sun Nov 22, 2020 1:59 pm
Forum: The Peabody Lounge
Topic: The Corona Virus Hoax of 2020
Replies: 296
Views: 25022

Re: The Corona Virus Hoax of 2020

what happens if you test both positive and negative? Do you quarantine 1/2 the time...? :lol:

JR
by JR.
Sat Nov 21, 2020 12:44 pm
Forum: Pro Audio Design
Topic: Super Low Distortion Ultra Pure Audio Oscillators Revisited
Replies: 52
Views: 49241

Re: Super Low Distortion Ultra Pure Audio Oscillators Revisited

There are probably ways to linearize an output buffer/driver with some local circuit tricks. IIRC there was some work done with audio power amps to linearize the output stages (like feed forward, whatever that means).

JR
by JR.
Thu Nov 19, 2020 2:38 pm
Forum: Pro Audio Design
Topic: Super Low Distortion Ultra Pure Audio Oscillators Revisited
Replies: 52
Views: 49241

Re: Super Low Distortion Ultra Pure Audio Oscillators Revisited

It may be useful to add simple RC filters in series with the voltage feeding R3 and R4 if they appear to be a vector for PS corruption.

JR
by JR.
Thu Nov 19, 2020 11:36 am
Forum: Pro Audio Design
Topic: Super Low Distortion Ultra Pure Audio Oscillators Revisited
Replies: 52
Views: 49241

Re: Super Low Distortion Ultra Pure Audio Oscillators Revisited

Cute... have you characterized the ein, and PSRR? I ASSume the THAT array is low noise.

JR
by JR.
Sat Nov 14, 2020 11:31 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1157
Views: 450359

Re: Entropy

The fatter cross section handles are mostly a good thing but caused two problems. The cross brace didn't fit, but in my judgement it was more about holding two shorter and smaller pieces together, instead of one long piece. I left it off and the wheelbarrow seems rigid enough. The second issue was t...
by JR.
Fri Nov 13, 2020 7:47 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1157
Views: 450359

Re: Entropy

wheel2.png
More drama than expected but its back in service... already has the old handle wood loaded into it to carry over to the burn pile tomorrow.

JR