It really sounds like buffer underrows like in the good old Pentium 90 times with SoundBlaster 16 and having the CPU under full load while playing the first ever envoded MP3 file. :D

@nonoaidnono

9 жыл бұрын

My old Samsung galaxy ace did this also lol

@kyoudaiken

9 жыл бұрын

Aidan Brown Every Samsung does this. :D Even my HTC One M8 does this... It's Android. It's just buggy shit. I wish the font in Windows Phone would not be so big on smallest setting, so I would rather use Windows Phone on Lumia 1520...

@alliefdxproductionservices5856

9 жыл бұрын

***** Windows Phone is a fantastic example of how not to utilise limited screen estate.

You have to wonder what Ludwig and Johann would make of all this! Very entertaining. Thanks, Julian.

@kyoudaiken

9 жыл бұрын

FlyingShotsman I would enjoy seeing them react to the today's technology and in what quality we are able to save music. :D

Great circuit explanation as always.

Nice little experiment. I liked the sound effect.

Thank you Julian for this review on the use TOA. Now I can't wait to try that on my fender guitar.

I've been a little disinterested in this project until now. Mainly, love music have no idea how its constructed. But todays video made me sit up and listen. Well done Julian for a most interesting post.

@lezbriddon

9 жыл бұрын

Dean Greenhough i've not been taking that much notice of these, but thats for now, come winter and dark days and not getting out as much i WILL come back and watch these for some winter project ideas

@JulianIlett

9 жыл бұрын

Dean Greenhough Thanks Dean

Alfa Rpar has AS3080 plus AS13704 quads minus the output Darlingtons.

great job Julian! this sort of thing could become useful for when i decide to get round to making the all in one super effects home-made guitar pedal :D

I'm a music producer, and love watching your audio videos as I'm interested in all kinds of sound generation. I've also got in to electronics due to your videos, keep them coming I find them very fascinating

@JulianIlett

9 жыл бұрын

David Dixon Thanks David. I'm looking forward to playing with the filter sections of this project.

@byroboy

9 жыл бұрын

David Dixon That cutting in and out does my head in. I thought it would cause strokes in music professionals!

Cool. I want to use a couple of these OTA for a circuit to vary white noise input to make a crashing wave sound circuit. I figured I would make 2 channel VCA with random modulation frequency in each to make it sound natural with a third channel as low level background white noise. Very timely circuit. Thanx.

It might sound nicer with the 555 signal taken from the timing capacitor rather than the square wave output.

@dentakuweb

9 жыл бұрын

Andy Walwyn Yes. LFOs are usually more useful when they're a Triangle or Sine. A square wave gives more of a "gating" effect than a tremolo.

It would be interesting to hear the effect that the output of pin 2 of the 555 timer would have on the gain input of the OTA. You can usually get a pretty rough sawtooth out of a 555 if you buffer the output of pin 2.

@lezbriddon

9 жыл бұрын

Matthew Harrison (matthehat) pin 6? or 7? 2 is the input..... yeah i'm being picky lol

@matthehat

9 жыл бұрын

Aye okay, you got me. Still, you tie pins 2 and 6 together...

I really like that you're playing with audio, as it co-insides with my own set of projects I'm planning out. Have you done any stuff with Arduino and audio? And incidentally anything with ESP8266 or RF24 involving streaming audio?

A concept that might improve the original schematic would be to change from a linear gain control signal to an exponential one (proportional to the drive signal as an exponent). I think you might find cookbook, voltage to exponential current output circuits in many opamp manuals. I may be able to help with that.

Ray Marston wrote a great article on OTAs for Nuts and Volts. It's has a VCA circuit that I've built in the past that's fun to use with an ADSR envelope or just a simple LFO for tremelos. www.nutsvolts.com/uploads/magazine_downloads/11/May%202003%20Ray%20Marston%20-%20Understanding%20And%20Using%20OTA%20OP-Amps.pdf

@JulianIlett

9 жыл бұрын

dentakuweb It is very good - very detailed.

Ahh the good old days of a level physics at play mow

Can you teach how the breadboards work?

there not really opamps though normal opamp rules don't apply to them.

could you tell me where to find that vocoder schematic?

@JulianIlett

9 жыл бұрын

James P There's a link to the PDF on my website: 256.uk/?p=48

@Roy_Tellason

5 жыл бұрын

@@JulianIlett That link isn't working for me...

Nice one - you used a bunch of electronics to emulate a skipping CD :) Would make a cruel trick to play on the LP buff - stick this circuit between their turntable and the amp when they're out of the room and have a bit of fun with digital potentiomeneters, and a 433 mhz RF remote :)

new thumbnail style and title with your name on it is not good,

@lezbriddon

9 жыл бұрын

iwantitpaintedblack I kinda liked the new thumbnail style, am i in a minority lol. missing the arduino and mppt solar things tbh, especially with all this sun.

@JulianIlett

9 жыл бұрын

lez briddon All this sun? None here. But thanks for the thumbnail thumbs up.

First comment,2nd view

Beethoven would have jumped .....

@iceberg789

9 жыл бұрын

oh ummm sorry, didn't know that. actually am not a person of classical music. but mr julian has had some musical education as it seems. ;o

@counterfit5

6 жыл бұрын

He would have rolled over