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How to create a clean Sine sweep from 20 to 22 kHz?

2

Comments

  • wimwim
    edited June 2019

    Zeeon does a pretty good job if you map an LFO to the OSC1 pitch. But it’s not a pure sine wave, it has just a bit of triangle to it, and doesn’t do the full frequency range you want.

    [edit] nah. Not a good choice.

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  • OnfraySinOnfraySin

    @tja said:
    @OnfraySin What is the name of this simple Knob without any additional controls, please?
    Cannot find it :(

    All the Modules are in the module library.

    The knob is, again, in the main node library

    This is the patch

    https://drive.google.com/file/d/1o3C9wYqHTFHG8youY4Y7I0pgRMKe0ICz/view?usp=drivesdk

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  • [Deleted User][Deleted User]
    edited June 2019
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  • OnfraySinOnfraySin

    @tja said:

    @OnfraySin said:

    @tja said:
    @OnfraySin What is the name of this simple Knob without any additional controls, please?
    Cannot find it :(

    All the Modules are in the module library.

    The knob is, again, in the main node library

    This is the patch

    https://drive.google.com/file/d/1o3C9wYqHTFHG8youY4Y7I0pgRMKe0ICz/view?usp=drivesdk

    OH, thanks a bunch!!! :) :) :)

    EDIT: iOS has problems again with this. Apple frustrates me to no end. Maybe iPadOS will help...

    Download file with Shortcuts!

  • SevenSystemsSevenSystems
    edited June 2019

    Deleted (didn't read rest of thread)

  • OnfraySinOnfraySin

    @tja said:
    While searching for the simple Knob and that left most sine module, I found something different:

    The left module is a “basic sine lfo”

    The knob is a primary node.

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  • espiegel123espiegel123

    @tja said:

    @wim said:
    Maybe use a synth that has a sufficiently long (linear) attack envelope that can be mapped to the OSC frequency. Or a super slow LFO that can be mapped to it. Possibly Zeeon? I dunno. I would never bother since there are audio files available and I can’t think of a single reason to use anything else.

    And what if this web page is down tomorrow?

    Or you want the swipe to behave differently, going up and down in a specific way, changing I time, frequency range and so on?

    I prefer to learn how to make fire, not to know someone who currently has a lighter ;-)

    You just need to use a spline node and a few other components. If you don't know how to do it, the folks on the Audulus forum are super helpful.

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  • OnfraySinOnfraySin

    @tja said:
    Many thanks, @OnfraySin

    I have something working now, and I like it - modulating both frequency and volume.

    First impression:

    Audulus seems to output above 0 dB :o

    And adds some harmonics below and above.

    Lfo goes to 0 to 1 by default, so....

    Take a look at Tutorials inside the app

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  • espiegel123espiegel123

    @tja said:

    @espiegel123 said:

    @tja said:

    @wim said:
    Maybe use a synth that has a sufficiently long (linear) attack envelope that can be mapped to the OSC frequency. Or a super slow LFO that can be mapped to it. Possibly Zeeon? I dunno. I would never bother since there are audio files available and I can’t think of a single reason to use anything else.

    And what if this web page is down tomorrow?

    Or you want the swipe to behave differently, going up and down in a specific way, changing I time, frequency range and so on?

    I prefer to learn how to make fire, not to know someone who currently has a lighter ;-)

    You just need to use a spline node and a few other components. If you don't know how to do it, the folks on the Audulus forum are super helpful.

    Yes, thanks.
    I will show up there with what I found above

    If you haven’t watched Robert Syrett’s Know Your Nodes videos, I think you will find them worthwhile. Most of the pieces you need exist as modules and nodes, and I think you’ll learn a lot in puzzling it through and find that you will get a lot more out of Audulus once you have done so.

  • OnfraySinOnfraySin

    And now, the kiss version

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  • [Deleted User][Deleted User]
    edited June 2019
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  • Blue_MangooBlue_Mangoo

    @tja said:
    Maybe I did something wrong, but the resulting file is full of additional harmonics and aliases

    From an app development perspective, generating a wave file that contains a logarithmic sine sweep is easy. But that kind of sound is quite different from the kind of tones most people would consider musically useful, so it may be difficult for you as a user to find existing musical apps that can do it properly, smoothly, and without adding unwanted noise. If there’s an app that does it, it would probably be an app designed for the purpose of generating test signals, rather than a musical synth app. I saw that 4Pockets has a tone generator app but I haven’t tried it yet.

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  • espiegel123espiegel123

    @tja said:
    I bought the "Tone Generator Ultra"
    But....

    It is iPhone only, meaning it does not rotate in a useful way on an iPad.
    Also, it does not support iPad resolution.
    And finally, it just cannot be loaded in AUM or AudioBus, which renders it totally useless.

    Going for a refund.

    Also I noticed that 4Pockets offer "PocketRTA Ultra", which I also bought.
    Sadly, it also cannot be loaded in a host.
    Strange ideas :o

    I then sorted the App into a folder and noticed that I already own "PocketRTA HD" which simply cannot be started anymore.
    It seems to be abondonware.

    In summary, I am not such happy with 4Pockets.

    Did you look at auDSPr's auGENx ? It was partly designed for precise test tone generation?

  • espiegel123espiegel123

    @espiegel123 said:

    @tja said:
    I bought the "Tone Generator Ultra"
    But....

    It is iPhone only, meaning it does not rotate in a useful way on an iPad.
    Also, it does not support iPad resolution.
    And finally, it just cannot be loaded in AUM or AudioBus, which renders it totally useless.

    Going for a refund.

    Also I noticed that 4Pockets offer "PocketRTA Ultra", which I also bought.
    Sadly, it also cannot be loaded in a host.
    Strange ideas :o

    I then sorted the App into a folder and noticed that I already own "PocketRTA HD" which simply cannot be started anymore.
    It seems to be abondonware.

    In summary, I am not such happy with 4Pockets.

    Did you look at auDSPr's auGENx ? It was partly designed for precise test tone generation?

    http://www.audspr.com/apps/G1/

  • wimwim
    edited June 2019

    Hey @tja, I’m very curious as to what you want to do with this. I can’t imagine any use, but I’m sure you have your reasons, so I’m interested. B)

  • rototomrototom

    @tja, itried in auGENx which was mentioned above and it works fine.
    here you get a clean sweep from 20hz to 20000hz in 10 seconds

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    edited June 2019
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  • SevenSystemsSevenSystems

    It may be easier to use white noise to test your EQs, if you have an averaging spectrum analyzer at hand. (not sure if there's one in the App Store...)

  • KorakiosKorakios
    edited June 2019

    https://my.pcloud.com/publink/show?code=XZUviN7Zr7OWkGimbnu8gwUhWXK1T5YKEtsV

    It plays via MobMuplat app. It has a simple volume slider, time to sweep to 22KHz ,start and stop button !

    Edit: I though @tja needed it for measuring ,but I leave it ,in case anyone needs to make a sweep.....

  • wimwim

    @tja said:

    @wim said:
    Hey @tja, I’m very curious as to what you want to do with this. I can’t imagine any use, but I’m sure you have your reasons, so I’m interested. B)

    Now, I am collecting Apps that I even only may use :D

    Currently, I am interested in testing compressors, limiters and equalizers with dedicated test tones and watch their differences in a spectogram, as was done by @Blue_Mangoo

    And trying to do so, I noticed that I have lots of App but no easy way to generate such test tones like a simple sinus sweep.
    That was bugging me and I started to try out things and search the internet.
    Mostly I found pages that offered some downloads, but no explanation how to do this myself.

    The goal? Nothing special, really. Just learning things that I am interested in.
    This way I learned some things:

    Audulus is an interesting playground and workplace.
    And, it may be better to generate such test tones with dedicated Apps, not a Synth.

    This was already worth the effort for me.

    I put auGEN X onto my wishlist and will most probably buy it later.
    I am still missing a spectogram App that can be loaded as filter - I hate to create files and open them in SpectrumView Plus.
    So, still searching :)

    Thanks for the explanation. Curiosity satisfied. B)

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