Prosody 1.1 software released

Tuesday, 19 December 2023. Latest Prosody software for Windows operating system now available for download. This version features 112 IRs for guitars, violins, cellos, basses, violas, hybrids and CABs. It also has automatic detection of the pedal and improved spectrum editing. MacOS version coming soon.


Prosody available for purchase
Monday, 30 October 2023. Prosody system now available for purchase from our online store.

Prosody 1.0 software released

Thursday, 26 October 2023. Prosody software for Windows operating system now available for download. MacOS version coming soon.


Website update

Thursday, 26 October 2023. Prosody webpage goes live.


Coming soon: Prosody

Thursday, 14 September 2023. Signal Wizard Systems will release Prosody in October 2023. This is  a stunning new IR and multi-effect pedal for all string instruments. Features:

  • IRs for guitars and all bowed string instruments
  • Custom IR import, including CAB responses
  • Wet/dry balance
  • 5 parametric EQ presets
  • 3 reverb presets
  • 3 universal distortion presets
  • 3 echo presets
  • All presets fully adjustable and locked in
  • Spectrum editor
  • 32-bit processing at 48 kHz sample rate
  • Full featured software for Mac and Windows
  • Power either 9V or USB
  • Robust die-cast design, 112.4 x 60.5 x 31 mm

The software will be made available on our downloads page before the end of September.


Signal Wizard for Blackfin+ released

Friday, 26 March 2021.  Signal Wizard Systems is proud to announce the release of Signal Wizard for Blackfin+. This package replaces Signal Wizard 2.5, it incorporates numerous new features including:

  • Export of filter coefficients in Blackfin+ compatible format (e.g. ADSPBF706)
  • Optimized filter design engine
  • Full real-time sine wave and arbitrary function synthesis
  • Vast repertoire of filter types
  • Real-time spectrum analyser
  • Real-time and offline signal filtering
  • ... and much more


Sales advisory

Friday, 26 March 2021.  We are currently experiencing high levels of demand for vsound 2. We have sufficient stock in the near term to meet all orders. Further stock from our assembly plant may be delayed due to a global shortage of key semiconductors.


All major debit and credit cards accepted

Tuesday, 26 January 2021.  Signal Wizard Systems is pleased to announce that, in addition to PayPal, all major debit and credit cards are now accepted for payment.


Free shipping for all vsound deliveries

Monday, 25 January 2021. Signal Wizard Systems is pleased to announce free shipping for all national and international orders of vsound.


New 32-bit and 16-bit WAV IR import for vsound

Thursday, 23 July 2020. Both the Mac and Windows versions of vsound 2.7 now support 32-bit and 16-bit WAV file import for IRs. Sample rate must be 36 kHz. Customers who have non-standard IRs can contact us and we will convert, free of charge.


Flat rate shipping costs for all international vsound deliveries

Thursday, 16 July 2020. Vsound shipping costs for all international orders are now $15 per unit.


Version 2.7 of vsound released for Windows 10 (64-bit)

Friday, 27 March 2020. Signal Wizard Systems is proud to announce the release of the 64-bit version of vsound 2.7 for Windows 10. New features include:

  • Over 100 IRs for violin, viola, cello and upright bass
  • Attractive new user interface
  • Versatile fader controls for smooth taper of impulse responses
  • Import of both 16-bit and 32-bit (PCM) WAV files for users' own IRs
  • Full flash operating system reboot
  • Intelligent COM port selection
  • Improved software integrity
  • Revised help system and user manual
Vsound 2.7 for Windows is available via the download page.


Bug fix: Version 2.7 of vsound for Mac OSX

Wednesday, 12 February 2020. Resolved: saving IRs after use of fader controls. Improved fader functionality. 


Version 2.7 of vsound released for macOS Catalina (64-bit)

Friday, 07 February 2020. Signal Wizard Systems is proud to announce the release of the 64-bit version of vsound 2.7 for the Mac OSX operating system including macOS Catalina. New features include:

  • Versatile fader control for smooth taper of impulse responses
  • Full flash operating system reboot
  • Improved software integrity
  • Revised Help Files and User Manual
Vsound 2.7 for Mac OSX is available via the download page.


Version 2.6 of vsound released for macOS Catalina (64-bit)

Saturday, 18 January 2020. Signal Wizard systems is proud to announce the release of the 64-bit version of  vsound 2.6 for the Mac OSX operating system including macOS Catalina. New features include:
  • Selectable reverse scrolling for users with Magic Mouse
  • Extended context-sensitive help
  • Revised User Manual
  • Improved pedal connection integrity
Vsound 2.6 for Mac OSX is available via the download page.


New bundle with 65 IRs: Bass, cello, viola and violin

Monday, 11 November 2019. Signal Wizard Systems is proud to announce the release of IR Bundle 3. It includes 65 IRs of basses, cellos, violas and violins, compatible with vsound 2.5 for both Mac and Windows operating systems. The bundle is free to download and use with the vsound hardware.


Bug fix: Version 2.5 of vsound for Mac OSX

Thursday, 20 June 2019.   The compatibility issue with the Mac version of vsound 2.5 has been resolved. The software may now be used with all UK, USA and European language settings.


Language compatibility issue with vsound for Mac OSX

Wednesday, 19 June 2019.   The Mac version of vsound 2.5 has compatibility issues with certain language settings. We advise that any Mac running vsound 2.5 should be set to UK or USA language. We are working to resolve this issue as quickly as possible.


Bug fix: Version 2.5 of vsound for Windows

Wednesday, 19 June 2019.   Bug-fix applied to version 2.5 of vsound for Windows. The file name was formerly incorrectly shown in the x-axis cursor field.


Version 2.5 of vsound released for Windows

Wednesday, 28 May 2019. Signal Wizard Systems is proud to announce the release of vsound 2.5 for the Windows operating system. The software  includes the following refinements:

  • Interactive mouse or track pad EQ.
  • New smooth graphing of IR and frequency response plots.
  • Sizeable batch file processing window
  • Concurrent IR and frequency response plotting using the Select IR window.
  • Extended help capability.

Version 2.5 of vsound released for Mac OSX

Thursday, 15 May 2019. Signal Wizard systems is proud to announce the release of vsound 2.5 for the Mac OSX operating system. The fully re-designed software boasts a range of cutting-edge features to enhance the vsound experience. These include:

  • Streamlined, intuitive user interface.
  • Single-click pedal detection.
  • Precision, highly flexible EQ, just by using the mouse wheel or pad. Re-sizeable batch load window.
  • Simplified gain remastering. Pedal IR auto re-load.
  • Package includes high-quality violin, cello and violin/cello hybrid responses.
Vsound 2.5 for Mac OSX is available via the download page.

prev next

New hybrid violin/cello, cello and violin bundle

Friday, 08 February 2019.   We are pleased to announce an amazing bundle of unique IRs, which includes 25 hybrid violin/cello IRs, 5 cello IRs and 5 violin IRs. All free to use with the vsound pedal. You're welcome! Visit the downloads page or click here.


Signal Wizard Systems at the NAMM Show, January 2019

Wednesday, 30 January 2019.   From setting up on the morning of the 23rd to the last demonstration on the evening of Saturday 26th, the show was crazy, exhausting, exhilarating and downright bizarre! Take a look at this slide show to see what we mean!

prev next

Version 2.3 of vsound software released

Tuesday, 01 January 2019. Signal Wizard Systems is proud to announce the release of version 2.3 of the software for vsound 2. The new-look version includes a number of refinements that make it even more intuitive to use. These include:

  • Floating control windows, and sizeable plots for IRs and frequency responses, making the spectrum editor even simpler to use.
  • Improved button layout, with single-click buttons for commonly used functions.
  • Spectrum editor, introduced in version 2.2, now completely replaces the older EQ functions.
  • User-scalable vertical axis on the frequency display, enabling precise comparisons of spectrum editing (before and after).
  • Improved helpfile (context sensitive and stand-alone PDF).

Signal Wizard Systems to showcase vsound at NAMM 2019, January 24-27, Anaheim, California

Monday, 10 December, 2018. Signal Wizard Systems will be showcasing vsound at this year’s NAMM exhibition, which is taking place at the Anaheim Convention Centre, Anaheim, California, from January 24 – 27. We will be bringing along our latest products, so if you are at the show, we’d love to see you there! We will be located at booth 9151. 

Our visit has been made possible by the generosity of the United Kingdom's Department for Trade and Industry Trade Access programme (TAP).

Click here to find us

Hans Johannsson delivers TEDx on the essence of the violin sound


Thursday, 15 November 2018. Hans Johannsson, the renowned violin maker and major research partner to Signal Wizard Systems, explores a fascinating juxtaposition of an age-old traditional craft on the one hand and the pursuit of science and technology on the other. The development of electric bowed string instruments through digital signal analysis sheds light on the knowledge that has hitherto been solely characterized by tacit intuitive methods, with the aim of expanding classical instrument making. Hans Johannsson has made classical stringed instruments since the late seventies. 

He has lectured on violin acoustics in Europe, Asia, Africa and the Americas, taken part in design exhibitions, produced and participated in television documentaries on violin making and a BBC radio programme documenting the use of technology in traditional violin making. From his workshop in Reykjavik, Hans characterizes and provides many of the impulse responses used in the vsound system, including his own high quality instruments and those of Old Italian heritage.

Version 2.2 of vsound software released

Tuesday, 30 October 2018. Signal Wizard Systems is proud to announce the release of version 2.2 of the software for vsound 2. The new version boasts a number of new features which make the system even more flexible for optimizing impulse responses. These include:

  • A Spectrum Editor -  a  unique and very powerful feature introduced in vsound version 2.2. It allows the frequency response to be modified directly in the frequency domain with exceptional precision, generating a new impulse response that can then be saved or downloaded to the hardware unit in the usual manner. Unlike the graphic and arbitrary equalizers, the Spectrum Editor introduces zero latency in the modified impulse response
  • Improved zoom/unzoom control for frequency responses
  • New cello impulse responses
  • New violin impulse responses
  • Hybrid cello/violin impulse response
  • Improved helpfile (context sensitive and stand-alone PDF)


Spectrum editor example. Click on the left image. The lower plot shows the frequency response of a Stradivarius violin. It contains a notch at 310 Hz. Now click on the right image. The notch has been completely removed. This operation is really simple to achieve. Simply highlight the region of interest with the mouse, select a gain and press "Filter". The system applies the gain and generates a new impulse response. Note the absence of any latency in the new impulse response.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam porttitor augue a turpis porttitor maximus. Nulla luctus elementum felis, sit amet condimentum lectus rutrum eget.