Hi,
I have developed a browser based sound editor using WASM Csound, which 
can be used to edit, create and transform sounds in various way. It's 
influenced by sound design tools like Cecilia, Mammut, Soundshaper and 
is geared towards working with fairly short sounds.

It is quite easy to add new effects/transforms with Csound and JSON, and 
I'd welcome any contributions of those. There is a basic introduction 
under the help menu, and I may make some walkthrough videos if anyone is 
interested. Grateful for any suggestions and feedback.

https://twist.1bpm.net/

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It’s really good, great sound design tool.
The only thing that it took me a while to figure out was the play vs audition vs commit actions, which makes
sense once you’ve done it once but at first I was looking at it thinking how can I generate a sine wave.

This should also be really useful in the classroom for the coding shy students.

Makes me wonder whether an integration of the Web IDE (which is also really successful) and this could be
designed.

Well done, it’s brilliant stuff.
========================
Prof. Victor Lazzarini
Maynooth University
Ireland

> On 25 Feb 2025, at 09:37, Lovre Bogdanić  wrote:
> 
> WARNING This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
> Hi Richard! Your editor looks amazing!! I'm looking forward to play with it a bit more when I find some time but in the meantime congrats!!
> 
> On Tue, Feb 25, 2025 at 10:23 AM Rory Walsh  wrote:
> This is excellent Richard! Of course I had to set the theme to hacker straight away :) I'm curious how you manage the different effects. Each one is a unique Csound instrument, with communication between it and the UI happening via JSON messages? 
> 
> On Tue, 25 Feb 2025 at 03:48, Richard Knight  wrote:
> Hi,
> I have developed a browser based sound editor using WASM Csound, which 
> can be used to edit, create and transform sounds in various way. It's 
> influenced by sound design tools like Cecilia, Mammut, Soundshaper and 
> is geared towards working with fairly short sounds.
> 
> It is quite easy to add new effects/transforms with Csound and JSON, and 
> I'd welcome any contributions of those. There is a basic introduction 
> under the help menu, and I may make some walkthrough videos if anyone is 
> interested. Grateful for any suggestions and feedback.
> 
> https://twist.1bpm.net/
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports tohttps://github.com/csound/csound/issues Discussions of bugs and features can be posted here
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Thank you, glad to hear the themes are getting some use too! There are a couple of hints at retro-computing with the CP437 font on the hacker theme and the default which is the classic Mac OS font..

That's exactly the fundament of it - each is a Csound instrument. When auditioning/previewing they are played in realtime and then when committing/applying they are run in a k-rate loop so can potentially perform faster than realtime - which is split into a maximum of 100 chunks in order to report percentage.
There are a bunch of helper opcodes for the instrument design. For example, some effects will want a-rate input, so an opcode provides that for the selected region. Then some (eg using sndwarp) need a ftable, so in those cases there is an opcode to provide the selected region as a table, sliced from the original table at init time.

Yes - communication happens with JSON. I use this method in a live performance setup with ctcsound, where outvalue/setOutputChannelCallback are used with a callback management type approach, so instruments providing a JSON response will be given an ID as p4, then the associated function can be executed when the host receives the return JSON. However, setOutputChannelCallback isn't supported in the WASM API - and I'm a little uncomfortable with polling which I think would have to be at kr. So it feels kind of hacky, but the WASM API has a callback handler for messages - so the JSON strings are literally printed to the console prepended with an identifier, then the message handler callback deals with any strings having that identifier accordingly.

You can see some basic instruments here: https://twist.1bpm.net/udo/twist/transforms/frequency.udo
There are a lot of UDOs, but you can see the input audio signals are obtained from an opcode which also yields whether left/right/both channels are selected and to be processed, then an opcode to obtain parameters from the UI (which are defined in a JSON object) - then output stereo audio as usual. These are run via subinstr, and everything else is taken care of, so ideally it should be quite simple to write the instruments.
Developer documentation explains most of this - https://twist.1bpm.net/developer_documentation.html

On 2025-02-25 09:23, Rory Walsh wrote:

This is excellent Richard! Of course I had to set the theme to hacker straight away :) I'm curious how you manage the different effects. Each one is a unique Csound instrument, with communication between it and the UI happening via JSON messages? 

On Tue, 25 Feb 2025 at 03:48, Richard Knight <richard@1bpm.net> wrote:

Hi,
I have developed a browser based sound editor using WASM Csound, which
can be used to edit, create and transform sounds in various way. It's
influenced by sound design tools like Cecilia, Mammut, Soundshaper and
is geared towards working with fairly short sounds.

It is quite easy to add new effects/transforms with Csound and JSON, and
I'd welcome any contributions of those. There is a basic introduction
under the help menu, and I may make some walkthrough videos if anyone is
interested. Grateful for any suggestions and feedback.

https://twist.1bpm.net/

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
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Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Thanks, I appreciate it! Please feel free to let me know how you get on and if you have suggestions/find bugs etc.

On 2025-02-25 09:37, Lovre Bogdanić wrote:

Hi Richard! Your editor looks amazing!! I'm looking forward to play with it a bit more when I find some time but in the meantime congrats!!

On Tue, Feb 25, 2025 at 10:23 AM Rory Walsh <rorywalsh@ear.ie> wrote:

This is excellent Richard! Of course I had to set the theme to hacker straight away :) I'm curious how you manage the different effects. Each one is a unique Csound instrument, with communication between it and the UI happening via JSON messages? 

On Tue, 25 Feb 2025 at 03:48, Richard Knight <richard@1bpm.net> wrote:

Hi,
I have developed a browser based sound editor using WASM Csound, which
can be used to edit, create and transform sounds in various way. It's
influenced by sound design tools like Cecilia, Mammut, Soundshaper and
is geared towards working with fairly short sounds.

It is quite easy to add new effects/transforms with Csound and JSON, and
I'd welcome any contributions of those. There is a basic introduction
under the help menu, and I may make some walkthrough videos if anyone is
interested. Grateful for any suggestions and feedback.

https://twist.1bpm.net/

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Thank you for the feedback, appreciate it.
Yes, I did wonder if the terminology is a bit unusual and preview/apply 
might make more sense - or if there could be any other way to make it 
more obvious - perhaps just some more tips/hints on first run.

Those are really interesting points about the educational use and 
integration with Web IDE. I've been thinking how it could bridge 
code/visual more - it does have the developer console on the action menu 
where new instruments can be compiled, but I'd be interested to hear if 
you have any specific ideas that come to mind for Web IDE integration, 
and am definitely open to that.

On 2025-02-25 09:45, Victor Lazzarini wrote:
> It’s really good, great sound design tool.
> The only thing that it took me a while to figure out was the play vs
> audition vs commit actions, which makes
> sense once you’ve done it once but at first I was looking at it
> thinking how can I generate a sine wave.
> 
> This should also be really useful in the classroom for the coding shy 
> students.
> 
> Makes me wonder whether an integration of the Web IDE (which is also
> really successful) and this could be
> designed.
> 
> Well done, it’s brilliant stuff.
> ========================
> Prof. Victor Lazzarini
> Maynooth University
> Ireland
> 

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Thanks! It's been on my mind for a while, and is actually a side-project/distraction for a browser based Csound multitracker - which works, but not completely ready to release yet!

Yes I agree those would be good things to create demo videos for. I did make one but wasn't too happy with it as it didn't cover everything, so I'll probably do a few different topics and post here when ready. Happy to hear you'd be interested to know about extending it and will definitely cover that in the videos - I'd be really interested to see what other people do with it in that regard.

On 2025-02-25 09:56, Tarmo Johannes wrote:

I agree, imprssive work! I can imagine how much coding and designing hours went into it!

Are you planning to do also demo videos that open the possibilities maybe the best way?

Especially I some examples about extending Twist would be welcome.

 

Congratulations!

tarmo

Kontakt Victor Lazzarini (<000010b17ddd988e-dmarc-request@listserv.heanet.ie>) kirjutas kuupäeval T, 25. veebruar 2025 kell 11:45:

It's really good, great sound design tool.
The only thing that it took me a while to figure out was the play vs audition vs commit actions, which makes
sense once you've done it once but at first I was looking at it thinking how can I generate a sine wave.

This should also be really useful in the classroom for the coding shy students.

Makes me wonder whether an integration of the Web IDE (which is also really successful) and this could be
designed.

Well done, it's brilliant stuff.
========================
Prof. Victor Lazzarini
Maynooth University
Ireland

> On 25 Feb 2025, at 09:37, Lovre Bogdanić <lovre.bogdanic@GMAIL.COM> wrote:
>
> WARNING This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
> Hi Richard! Your editor looks amazing!! I'm looking forward to play with it a bit more when I find some time but in the meantime congrats!!
>
> On Tue, Feb 25, 2025 at 10:23 AM Rory Walsh <rorywalsh@ear.ie> wrote:
> This is excellent Richard! Of course I had to set the theme to hacker straight away :) I'm curious how you manage the different effects. Each one is a unique Csound instrument, with communication between it and the UI happening via JSON messages?
>
> On Tue, 25 Feb 2025 at 03:48, Richard Knight <richard@1bpm.net> wrote:
> Hi,
> I have developed a browser based sound editor using WASM Csound, which
> can be used to edit, create and transform sounds in various way. It's
> influenced by sound design tools like Cecilia, Mammut, Soundshaper and
> is geared towards working with fairly short sounds.
>
> It is quite easy to add new effects/transforms with Csound and JSON, and
> I'd welcome any contributions of those. There is a basic introduction
> under the help menu, and I may make some walkthrough videos if anyone is
> interested. Grateful for any suggestions and feedback.
>
> https://twist.1bpm.net/
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports tohttps://github.com/csound/csound/issues Discussions of bugs and features can be posted here
> Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports tohttps://github.com/csound/csound/issues Discussions of bugs and features can be posted here



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I have created a walkthrough video for this which outlines the 
capabilities and gives a peek at how to extend it using Csound and JSON:

https://www.youtube.com/watch?v=oAFStTJWDZc

Hopefully will be of use to someone :)

On 2025-02-25 03:37, Richard Knight wrote:
> Hi,
> I have developed a browser based sound editor using WASM Csound, which
> can be used to edit, create and transform sounds in various way. It's
> influenced by sound design tools like Cecilia, Mammut, Soundshaper and
> is geared towards working with fairly short sounds.
> 
> It is quite easy to add new effects/transforms with Csound and JSON,
> and I'd welcome any contributions of those. There is a basic
> introduction under the help menu, and I may make some walkthrough
> videos if anyone is interested. Grateful for any suggestions and
> feedback.
> 
> https://twist.1bpm.net/
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

Csound mailing list
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Send bugs reports to
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Thank you Dr. B!

That's great to hear - a friend has been using it in the classroom too! Appreciate any feedback, suggestions and bug reports.

On 2025-04-12 12:59, Dr. Richard Boulanger wrote:

Richard,

 

Fantastic work!  WOW.  Loving it.  And, especially appreciating your Overview Video!

I will be sharing it with my Csound and DSP students in the next few weeks - and I am confident that they will be as excited as I am about your fantastic work.

 

- Dr.B

 

Dr. Richard Boulanger

Professor

Electronic Production and Design

Berklee College of Music

Professional Writing & Technology Division

On Tue, Apr 8, 2025 at 2:08 PM Richard Knight <richard@1bpm.net> wrote:

I have created a walkthrough video for this which outlines the
capabilities and gives a peek at how to extend it using Csound and JSON:

https://www.youtube.com/watch?v=oAFStTJWDZc

Hopefully will be of use to someone :)

On 2025-02-25 03:37, Richard Knight wrote:
> Hi,
> I have developed a browser based sound editor using WASM Csound, which
> can be used to edit, create and transform sounds in various way. It's
> influenced by sound design tools like Cecilia, Mammut, Soundshaper and
> is geared towards working with fairly short sounds.
>
> It is quite easy to add new effects/transforms with Csound and JSON,
> and I'd welcome any contributions of those. There is a basic
> introduction under the help menu, and I may make some walkthrough
> videos if anyone is interested. Grateful for any suggestions and
> feedback.
>
> https://twist.1bpm.net/
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here