Wanted - VU Meter pedal for Guitar

Started by admin, February 08, 2018, 01:39:34 PM

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admin

 

I wish there was a basic pedal that was a VU meter - so I could properly set the gain stages I/O of all effects on my live rig.

Id temporarily patch in the VU meter pedal as needed to debug my patch creation

Gobi already built one
https://www.vguitarforums.com/smf/index.php?topic=22458.msg164225#msg164225

Maybe we can talk any manufacturer to provide a "VU meter" firmware update  for the TC Polytune, or Eventide H9, or ?




admin

probably just use an iRig Stomp + an RTA IOS app


chrish



chrish

Let me rephrase my question. if you where to purchase the above product would you be able to accomplish the same thing that hal- bar does?

As,in finding the frequencies that you want to model from your favorite guitar and pickup combination and then use that EQ curve to enter it into a VG 99 for example.

admin

#5
Quote from: chrish on February 08, 2018, 04:30:51 PM
Let me rephrase my question. if you where to purchase the above product would you be able to accomplish the same thing that hal- bar does?

As,in finding the frequencies that you want to model from your favorite guitar and pickup combination and then use that EQ curve to enter it into a VG 99 for example.

Harbal is intended to be a tool to help in Mastering and  / or replicate a known desired EQ curve

its  great tool - but thats not my goal for the VU meter stomp box


I'm simply seeking a cheap  small VU Meter in a stompbox tool to help set my Gains and Levels and determine "Unity Gain"  for each stompbox on my pedal board ( when not using a digital MFX ( yeah i often go all analog)
Might have to build my own

https://www.ebay.com/itm/2pcs-VU-Panel-Meter-Warm-Back-Light-With-VU-Driver-PCB-Board-Stereo-Audio-Amp/400509838166



the VG-99 already has VU meters built in
https://www.vguitarforums.com/smf/index.php?topic=13822.msg29220#msg29220

here's why
https://www.vguitarforums.com/smf/index.php?topic=9317.msg67108#msg67108



other level calibration strategies for GT-100

Yohanes

Hi Adm,

You give me an idea, I will build one but with LED bar indicator (not the needle as in your photos) for me too, not because I need it, but something fun to do and to have for guitar tech lab. I will build one and maybe post the pic in my leisure time.

Thanks and best regards,
Yohanes
Yamaha Pacifica 510V
Roland G-707
Godin Freeway SA
Boss GP-10
Roland GR-50

admin


admin

#8

Gobi already built one
https://www.vguitarforums.com/smf/index.php?topic=22458.msg164225#msg164225


But must pay attention to accommodate a 1Meg Input impedance for passive guitars

gumtown

Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

Majiken

I just ordered 3 myself, this looks like what I have been searching for for 100 years!  The display looks to be the same size as that on the GP-10; I'll look to see if there is indeed space IN the GP-10 for installation- either horizontally directly above the current display, or vertically between the pedal and the display/CTL 2.  Will also see about (my guru) putting one into a box for universal duty.  I am assuming there is some way to calibrate the display to a specific voltage, like that of the mixing board normally used.

Thanks for the tip!!!!

Quote from: gumtown on February 08, 2018, 05:42:01 PM
I brought some of these recently, actually sitting on my desk behind my computer keyboard.

https://www.ebay.com/itm/Dual-12-Stereo-Level-indicator-DIY-Kit-LED-VU-Meter-lamps-Light-Speed-Adjustable/172430158398?hash=item2825a36a3e:g:UiAAAOSwiDFYQYJa

US$7.80 with free delivery


Take what you need, put back a bit more, leave the place behind you better than it was before :-)

www.majiken.rocks

chrish

#11
Quote from: admsustainiac on February 08, 2018, 04:37:56 PM
Harbal is intended to be a tool to help in Mastering and  / or replicate a known desired EQ curve

its  great tool - but thats not my goal for the VU meter stomp box


I'm simply seeking a cheap  small VU Meter in a stompbox tool to help set my Gains and Levels and determine "Unity Gain"  for each stompbox on my pedal board ( when not using a digital MFX ( yeah i often go all analog)
Might have to build my own

https://www.ebay.com/itm/2pcs-VU-Panel-Meter-Warm-Back-Light-With-VU-Driver-PCB-Board-Stereo-Audio-Amp/400509838166



the VG-99 already has VU meters built in
https://www.vguitarforums.com/smf/index.php?topic=13822.msg29220#msg29220

here's why
https://www.vguitarforums.com/smf/index.php?topic=9317.msg67108#msg67108



other level calibration strategies for GT-100
I guess I'm just confused because you posted a picture of a frequency spectrum analyzer.

This one; iRig Stomp + an RTA IOS app.

Didn't seem like a Vu meter application but it looked like it might do the same thing that hal-bar does as far as analyzing a frequency spectrum. looked interesting.

Elantric

#12
Quote from: chrish on February 09, 2018, 03:24:50 PM
I guess I'm just confused because you posted a picture of a frequency spectrum analyzer.

This one; iRig Stomp + an RTA IOS app.

Didn't seem like a Vu meter application but it looked like it might do the same thing that hal-bar does as far as analyzing a frequency spectrum. looked interesting.

Bill Ruppert found this one for me

https://www.ebay.com/itm/Guitar-and-Bass-buffer-pedal-with-true-bypass-switching-sound-VU-meter/322941425514




General description
The 'black box' is a low noise, hand crafted class A analog buffer pedal used to prevent tone loss (primarily high frequency attenuation). Cables have capacitance. The longer they get, the bigger the capacitance tends to be, which in turn forms a low-pass filter. Mismatches of input and output impedance can also be a factor. All of it can be resolved by using a signal buffer. Most often used up front as the first pedal in chain. It runs on a standard +9v DC boss adapter (negative center), or any other power supply rated at 9 - 12VDC. In case polarity is reversed, the device is protected.

Note, that the first LED is not only a part of the VU meter, but a power indicator, therefore it is always on.
Features
• Resolves high frequency attenuation (due to long cables, impedance mismatch etc.).
• Built with best available electronic components (Panasonic, Rubycon, WIMA, Nichicon capacitors).
• Hand crafted.
• Compact design. Occupies little space on a pedal board.
• All analog signal processing.
• True bypass switching.
• VU meter for sound level indication. Adjustable LED sensitivity.
• No coloration of sound - flat response.
• Protected from incorrect polarity power supplies.
• Filters out possible radio interference.


Item details
Power supply  +9V - 12VDC (negative center). Power supply not included.
Dimensions 9.05 x 3.65 x 3.1cm
Enclosure material Aluminium
Signal processing Analog
Current draw 4 - 6mA @ 9VDC
Input impedance 1MΩ
Max output load 10KΩ
Frequency response 13 Hz to 45 KHz
Polarity protection Yes
True bypass Yes


Elantric

#13

Zoom H6

for a VSTi laptop based rig - this might prove valuable
https://www.gearnews.com/ddmf-plugin-analyzer-tells-plug-ins-audio/
DDMF Plugin Analyzer tells you what your plug-ins are doing to your audio
Plugin Doctor
·  Source: DDMF


DDMF has released a true 'power user' tool for music producers – Plugindoctor. This is an analyzer for VST and AU plug-ins that comes recommended for plug-in developers who want to test their creations or users who want to understand exactly what a plug-in is doing to their audio.

Plugin Doctor features a double-precision FFT engine for independent stereo channel analysis. Linear analysis is possible via magnitude and phase response facilitated by delta or random input signal. Harmonic analysis is a possibility as well, with sinusoidal input signal and variable input strength and frequency for THD/THD+N calculation. A built-in oscilloscope is available for visualization.

Dynamics measurement is available too, with a ramping signal used to test compression or expansion, or an attack-release signal to check a compressor's attack and decay response. Latency can be analyzed in detail, letting you know how many milliseconds are spent in your plug-in's audio processing callback. What's more, Plugin Analyzer lets you store different settings of plug-ins or take screenshots and compare them easily.

Overall, this is a fantastic tool to have for making the most out of your plug-ins or troubleshooting. It fills a gap within the digital audio world for sure.

Price & availability
Plugin doctor is available as a 32- and 64-bit standalone app. Free demo versions are available for Mac and Windows. The full version costs 16 EUR.

More information
Product page


https://ddmf.eu/plugindoctor/

Elantric

#14
http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=171765947707&category=58278&pm=1&ds=0&t=1518892566000&ver=0






EVOR04 Color LCD touchscreen based VU meter, Oscilloscope, Real time analyzer, Envelope, Goniometer

Features
3.5" TFT Color LCD display
Touchscreen interface
Wide range 5V to 24V power supply or powering trough USB
5 viewing modes: VU meter, 31 band real time spectrum, Oscilloscope, Envelope, Goniometer (X-Y plot), Analog VU meter, Frequency tune
2 displayed channels, each individually selectable from 2 inputs (total 4 inputs)
more than 200 adjustable parameters
48 programmable presets
127 image slots for background and skins
Adjustable 0dB reference in range from 2.2 mVrms to 2 Vrms
Wide bandwidth input signal 8 Hz - 22 kHz
USB communication with a PC
USB connector, for power or modification of presets from PC
Fully functional in standalone powering (USB connection is used only for modification of internally stored presets)
Many viewing modes with lot of adjustable parameters:








http://sch-remote.com/Color-LCD-touchscreen-VU-meter---Oscilloscope---Real-time-analyzer---Envelope---Goniometer-PID-EVOR04.php
http://sch-remote.com/doc/EVOR04%20Datasheet.pdf




Yohanes

Most of the display above and in the market is for line level. We need a guitar pre-amp or at least a high impedance input buffer between the guitar output and the display electronic to match for our guitar signal.

I am still looking for ready to solder PCB for a single power supply op-amp buffer so can mount them in a Hammond 1590b case.
Yamaha Pacifica 510V
Roland G-707
Godin Freeway SA
Boss GP-10
Roland GR-50

admin

#18
Quote from: Yohanes on June 20, 2018, 07:29:21 PM
Most of the display above and in the market is for line level. We need a guitar pre-amp or at least a high impedance input buffer between the guitar output and the display electronic to match for our guitar signal.




https://www.ebay.com/itm/Guitar-and-Bass-buffer-pedal-with-true-bypass-switching-sound-VU-meter/322941425514

Quote
I am still looking for ready to solder PCB for a single power supply op-amp buffer so can mount them in a Hammond 1590b case.
https://www.pinterest.com/carlhagen940/guitar-pedal-schematic/?lp=true
https://guitarpedalparts.com/product/buffer-pcb/?gclid=CjwKCAjw9qfZBRA5EiwAiq0Abdh8GcCuDAuCg3dNK4mhBQM4lbdkZo1Azw5D2gLXxhvYd0JnVFxmBxoCGBIQAvD_BwE


admin

#20
Plug this into MFX headphone out, its small display acts as a confidence checker that may help debug your guitar rig at live gig sound check  -works as Bluetooth 5.0 aptx transmitter/Receiver for non gig uses

9 hr battery,  $19

https://www.amazon.com/dp/B09BTL1SV2?psc=1&smid=A2PUZV79GVN4KB&ref_=chk_typ_imgToDp